Shiki Tohno

is a member of the Tohno household living in Misaki Town. He possesses the Mystic Eyes of Death Perception, Mystic Eyes that allow him to see "death." He is the main protagonist of Tsukihime and the Tsukihime series.
==Profile==
===Background===
Shiki is in fact not a real member of the Tohno family, is not Akiha's biological brother, and is not Makihisa's son. While the Tohno family is a family with demon blood, Shiki's real surname is Nanaya, a family of powerful demon-slaying assassins. It is revealed in Kagetsu Tohya that he is the son of Kiri Nanaya. The Nanaya clan lived in a secluded mansion in the mountains, but was one night destroyed by the Tohno and Kouma Kishima. Shiki was the only survivor of that attack. In a moment of amused irony, Makihisa spared and adopted the boy because his name was unisex with the name of Makihisa's eldest son, .
Shiki lived in a small Japanese-style building on the grounds of the Tohno's western-style mansion for a time, learning to accept and be accepted by his new siblings. Although he was lonely and unwilling to leave his room at first, eventually he warmed to the cheerful red-haired girl Hisui who would come every day to ask him to play, and in turn lead his shy and often-nervous sister outside as well. He, his sister, his brother, and the red-haired girl would play together frequently.
Eight years before the start of the game, he was involved in a life-threatening accident, which led to anemic symptoms and left him with a large scar on his chest. Due to these symptoms, he suffers from frequent collapsing and fainting. Although Shiki did not know it, the Tohno family's demon blood led to inhuman urges in all its members; every descendant eventually became insane from its effects, a process called "inversion impulse". When this happens, the person loses all ability for conscious thought and becomes a monster with only the mind to kill and consume others. One hot summer day as Shiki played with his brother SHIKI and sister Akiha, SHIKI inverted without warning, and immediately attacked Akiha. Shiki managed to shield Akiha at the cost of his own life; the wound that SHIKI caused by piercing him in the chest became the large scar that Shiki would bear from that day forward.
It is the duty of the Tohno's family head to police demon activity in the area, and specifically to execute any Tohno who underwent inversion so that he or she cannot do the sort of damage that such inhuman beings inevitably do. Makihisa arrived on the scene immediately and, without a second thought, killed his own son. However, neither Shiki nor SHIKI died that day. Although Shiki did not know it then, his sister Akiha provided him with half of her own lifeforce, keeping him alive. In turn, SHIKI instinctively stole half of Shiki's borrowed lifeforce to avoid his own death. It is this lack of energy that causes Shiki's anemic tendencies.
In addition to the physical problems, the accident also caused Shiki's eyes to develop a peculiar ability, the ability to see lines superimposed on objects and people. If Shiki traces these lines with a sharp tool, the object immediately falls apart along them regardless of the amount of force used. Upon discovery of this ability, Shiki understood how destructive it was and how fragile the world around him could be. Because his eyes would not return to normal, the realization began to gnaw at him.Tsukihime - a prologue
Image:0024.jpg|Aoko's first encounter with Shiki 
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Fortunately, a few days after his time in the hospital, he ran outside and met Aoko Aozaki. Aoko (whom Shiki decided to call Sensei) comforted him during the next few days. Shiki was eager to impress Aoko, thus he demonstrated the ability of his eyes by destroying a tree. Aoko reprimanded him by slapping him and explained to him that what he had done was unjust. Aoko later provided a pair of magical glasses which, when worn, removed the lines from sight.
When Makihisa realized this convoluted state of affairs, he concocted a ruse to deceive the outside world. As the head of a publicly important family, which held an influential position in business, he could not allow others to know that the eldest son of the family had become inhuman, died, or disappeared. To conceal this, Makihisa locked SHIKI away and hypnotized Shiki into believing that he was the Tohno's eldest son instead, erasing the details of that day from the boy's mind. After installing Shiki in SHIKI's place as eldest son, Makihisa then sent Shiki away to live with the Arima family branch under the pretext that a boy so dreadfully injured, and who could die at any time from a fragile constitution could not be the heir to the Tohno house. Despite the necessity of making Shiki believe in his new identity as a Tohno, however, Makihisa retains an antique knife inscribed with the name of the Nanaya clan, and later bequeathes it to Shiki, although the multiple meanings of Japanese kanji cause Shiki to misread the inscription as "Nanatsu-Yoru", or "Seven Nights".
Because of his poor health, Shiki was removed from the Tohno household by his father, Makihisa Tohno, despite being the eldest son of the family. Instead, he was sent to live with a distant branch of the Tohno family named Arima. He frequented the practice of doctor Sougen Jinan during this time, and once had his first sexual experience with his daughter, Tokie Jinan. At the start of the game, Shiki was called back to the Tohno mansion after eight years of absence due to Makihisa's death, called back by his younger sister, Akiha Tohno. Although he had not seen his sister in those eight years, she has grown into a proper lady of a high-class family, and after removing all of the family residents and servants of the mansion except for a pair of maids, had chosen to invite him to return.
===Appearance===
Shiki Tohno is illustrated as a young man with an athletic build. He has unruly black hair that partially covers his forehead, with some locks falling just over the rim of his glasses, which have a simple, rectangular frame. He is dressed in a traditional Japanese school uniform, which consists of a neatly buttoned-up, dark blue gakuran jacket with a standing collar, and trousers matching the jacket in color.
Tsukihime_Anime_Shiki_Tohno.png||'s character sheet of Shiki in Lunar Legend Tsukihime.
Tohno_Shiki_Illustration_Sasaki_Shounen.jpg|Shiki Tohno, illustrated by Shounen Sasaki.
MELTY_BLOOD_Volume_4.jpg|Sion and Shiki in the cover of the 4th Volume of the Melty Blood Manga, illustrated by Takeru Kirishima.
ShikiT_Carnival_Phantasm_Character_Sheet.png| character sheet of Shiki in Carnival Phantasm.
===Personality===
Shiki is a fairly normal high school student most of the time. Due to his close brush with death, he is not overly concerned about dying, and instead seeks to cherish every moment of his life - 'just living is enough' is his perspective on life. He is playful with his sister Akiha and the maids Hisui and Kohaku, sometimes silly, and not at all above exchanging jibes with his best friend and classmate Arihiko Inui or pleasantries with his senpai Ciel. He's entirely capable of being serious in a serious situation, and just as often flustered or embarrassed. His personality is one of that who is slightly mean to those he loves. He is also a very, very heavy sleeper, to such a point that Hisui is unable to awaken him.
He has a darker side, that of his bloodline's, the Nanaya. The instincts and skills he had learned at a young age are buried deep within Shiki and have proven capable of manifesting themselves in dire situations, such as in his battle against Nrvnqsr Chaos. Although not on the level of an alternate personality, the Nanaya side of Shiki is the highly trained killer within him and thus is much colder. Only once has his Nanaya side surfaced in a similar way to that of an alternate personality, and that was under great stress and a very difficult situation for Shiki. The other times, Shiki is merely filled with a desire to kill, and instinctual knowledge on how to do it. Sometimes, however, Shiki himself seems to refer to his dark side as "him", another person, namely when discussing with SHIKI. This would imply that he does not fully accept it as his own self. This aspect of his personality seems to have mostly disappeared (or at least rendered obsolete thanks to his mastery of his abilities) after the events of Tsukihime.
Despite the absence of this trait in subsequent stories, however, a remnant of his Nanaya self seems to remain in his usual personality, particularly when he is facing those he considers his enemies. He can be surprisingly cold, giving those such as Nrvnqsr only quick, curt comments while expressing his intent to erase them, or, in the case of Roa, saying nothing at all while exuding a murderous killing intent. However, in each of these scenarios, not once has he ever succumbed to his Nanaya personality, retaining his own sense of self and will, and defeating his opponents on his own terms.
Shiki Nanaya is a manifestation of Shiki Tohno's murderous intent and lives only for his next kill. Nanaya is smooth, confident, and treats life (and death) casually.
Despite his physical condition, Shiki holds a cheerful outlook on life. More so than most of his peers, because he understands how fragile life really is.
While Makihisa began grooming Akiha in earnest as the next family head, Shiki lived with the Arima family branch, which consisted of only a mother, father, and young daughter. The Arima, though related to the Tohno, had negligible demon blood, and he lived there in relative quiet and comfort for eight years.
Despite his family's wealth, Shiki wishes to take up a job because he does not get a monthly allowance from Akiha. She only allows him what food is necessary for him, so extra spending money is unnecessary. She will willingly buy him anything else that he wishes, but he never asks her. They call him unselfish to the point it can be called a medical condition, and he would much work rather than have to ask her.Tsukihime PLUS-DISC - Gechha
==Role==
Shiki is the protagonist of Tsukihime, and outwardly he is a normal second-year high school student with a somewhat poor constitution.
===Tsukihime===
====Arcueid's Route====
Shiki first meet Arcueid in one of the 2 "Near side of the moon" routes (Arcueid/Ciel's routes) after leaving school early one day because of an anemia attack, he spots Arcueid on the street and is consumed by an irresistible urge to kill her because of his Nanaya blood. The Nanaya were a family of killers that specialized in hunting down non-humans, and Arcueid as a vampire awoke his Nanaya blood. Skillfully trailing Arcueid back to her apartment, he rings the doorbell and in the instant the door opens, sneaks through the crack and slices her into 17 pieces in an instantaneous single strike with his knife and his Mystic Eyes of Death Perception. Regaining his sanity and finding himself in front of her corpse, Shiki staggers to the park where he either collapses and is taken back to the mansion by Kohaku (Arcueid's route) or is found and taken care of by Ciel (Ciel's route).Tsukihime - Near Side: Arcueid's Route, 1/Inversion Impulse I - 1st day/October 21 (Thur.)Tsukihime - Near Side: Arcueid's Route, 2/Inversion Impulse II - 2nd day/October 22 (Fri.)
The next day when heading to school, Shiki finds Arcueid waiting on a guard rail outside his school. Panicking, he runs, only to be chased into a dead alley and confronted by Arcueid. Their conversation is interrupted by one of Nrvnqsr's beasts, and Arcueid "convinces" Shiki to help her deal with the vampire in the town as she used up most of her power to reform her body after Shiki killed her and will need time to regain the power she had lost.Tsukihime - Near Side: Arcueid's Route, 3/The Black Beast I - 3rd day/October 23 (Sat.)
The two of them are partners against Nrvnqsr Chaos, with Shiki killing Nrvnqsr by striking his "point of death".Tsukihime - Near Side: Arcueid's Route, 4/The Black Beast II - 4th day/October 24 (Sun.) The next night, Arcueid sends Len to Shiki's room to give him a dream of a sexual encounter.Tsukihime - Near Side: Arcueid's Route, 5/Blue Scar of Sin - 5th day/October 25 (Mon.) The next day, they decide to again be partners to defeat Michael Roa Valdamjong who Arcueid had been targeting.Tsukihime - Near Side: Arcueid's Route, 6/Eyes of Dead Perception I - 6th day/October 26 (Tue.)Tsukihime - Near Side: Arcueid's Route, 7/Eyes of Death Perception II - 7th day/October 27 (Wed.)Tsukihime - Near Side: Arcueid's Route, 8/Death - 8th day/October 29 (Thur.) Over the course of her route she and Shiki begin to understand one another. Shiki shows Arcueid the various things she's unaware of, such as movies, which are things Arcueid can't comprehend as important. Shiki explains that the unimportant and unnecessary parts of life are what make it fun. At several points she attempts to bite Shiki, though she manages to hold herself back in time.Tsukihime - Near Side: Arcueid's Route, 9/Vermillion Crimson Moon I - 9th day/October 29 (Fri.) Eventually she and Shiki fall in love with one another, despite her slightly unstable nature and vampire lineage.Tsukihime - Near Side: Arcueid's Route, 10/Vermillion Crimson Moon II - 10th day/October 30 (Sat.) Arcueid, after sleeping with Shiki, attempts to destroy Roa by herself and leaves Shiki to keep him safe. Looking to reunite with Arcueid, Shiki crosses paths with Roa, and is fatally wounded by him. Thanks to Ciel arriving to his rescue they are able to escape before Roa finishes him off.Tsukihime - Near Side: Arcueid's Route, 11/Savage Night - 11th day/October 31 (Sun.) At the school, Arcueid fights Roa with her Marble Phantasm and is seemingly killed, her weakened body unable to withstand the strain of the skill. Roa, unfortunately, regenerates from the ankles that Arcueid did not destroy, remarking that without the full moon, he would not have been able to recover. Enraged and in grief, Shiki stabs the "point of death" in the walkway he and Roa are on. Roa's body is severely mutilated from the debris and Shiki stabs Roa's point with little resistance. Roa, however, lingers on for a few seconds and attempts to kill the tired Shiki, and is erased from existence by Ciel's Seventh Holy Scripture. Ciel says to Shiki that since she's the one who killed Roa, Shiki should return to the normal world that he came from.Tsukihime - Near Side: Arcueid's Route, 12/The World of the Moon - 11th day/October 31 (Sun.)
In Arcueid's True Ending, Shiki waits in his classroom for her despite thinking she is dead. Arcueid surprisingly arrives a week after her supposed death, having regained the bit of power Roa stole from her. However, she can no longer hold back her impulses and decides she should sleep from now on, dreaming of Shiki. Despite Shiki's pleas, even begging her to drink his blood, Arcueid says she cannot do so because she loves him and says farewell with Shiki greatly saddened, looking at the moon as he leaves the school.Tsukihime - Near Side: Arcueid's Route, Tsukihime - an epilogue This ending was the basis for the ending used in the anime, although a few details were changed. In the manga, after Arcueid left, he goes on a search for her and they are finally reunited together.Lunar Legend Tsukihime Chapter 74 It is left unsure whether this is reality or a hypothetical "what-if" situation playing in Arcueid's dream as she sleeps.
In Arcueid's Good Ending, she spends an entire week suppressing her urges and meets Shiki on his way to school, exactly at the same point where he met her at the beginning of the story. The two then go off to seemingly spend the day together.Tsukihime - Near Side: Arcueid's Route, Moon at Dawn - an epilogue
====Ciel's Route====
The first five days of Ciel's route closely resemble Arcueid's route, the most notable difference being that Shiki Tohno expends more time with Ciel than in the previous route.Tsukihime - Near Side: Ciel's Route, 1/Inversion Impulse I - 1st day/October 21 (Thur.)Tsukihime - Near Side: Ciel's Route, 2/Inversion Impulse II - 2nd day/October 22 (Fri.)Tsukihime - Near Side: Ciel's Route, 3/The Black Beast I - 3rd day/October 23 (Sat.)Tsukihime - Near Side: Ciel's Route, 4/The Black Beast II - 4th day/October 24 (Sun.)Tsukihime - Near Side: Ciel's Route, 5/Red Residue - 5th day/October 25 (Mon.)Tsukihime - Near Side: Ciel's Route, 6/Bow in the Sky I - 6th day/October 26 (Tue.)
With the help of Ciel, Shiki successfully defeats Michael Roa Valdamjong.Tsukihime - Near Side: Ciel's Route, 7/Bow in the Sky II - 7th day/October 27 (Wed.) However, he transfers the burden of his madness to him, causing Shiki to have murdering thoughts and strange dreams (one of which Shiki finds about Ciel's past before and after being possessed by Roa).Tsukihime - Near Side: Ciel's Route, 8/(Death) - 8th day/October 28 (Thur.)Tsukihime - Near Side: Ciel's Route, 9/Cast-off Cicada Shell - 9th day/October 29(Fri.)Tsukihime - Near Side: Ciel's Route, 10/Red Residue II - 10th day/October 30 (Sat.) After he gets out of control and gravely injures and rapes Kohaku, Shiki runs away from the mansion, afraid that he will be unable to resist the urge to kill as long as he's around people. Shiki calls Ciel and confesses to her that he's really a killer and needs to be away from people. She asks him to meet her at the school since there are no people there. He goes, but when she shows up she finds her dressed in her executor outfit as she carries her Seventh Holy Scripture. Ciel reveals to him that everything they shared in the past was all a huge lie, and her only purpose for being with him was to find out if he was Roa, and then kill him if he was. Shortly after, Ciel forces them to fight, despite Shiki not wanting to. Ciel quickly immobilizes him, but she is unable to kill him. She tries to convince herself that her love for Shiki was fake and it was just her mission to destroy Roa, but she ultimately collapses, sobbing onto Shiki's arms.Tsukihime - Near Side: Ciel's Route, 11/Mirage (I) - 11th day/October 21 (Sun.)
They later go to Ciel's house, when Shiki finds that his body has been excited after Roa transferred to his body. Ciel finds it out and tries a technique on him to calm the soul, in which they have sex. However, after they do it, Shiki is still succumbing to Roa, so he leaves Ciel's house, where he encounters Arcueid Brunestud, who was looking for him in order to kill him. She immediately blames Ciel for Shiki's current condition and tells him that she can save him if he obeys her. Shiki is given the choice to answer her. If Shiki tells Arcueid that he does not love her, it results in Ciel's True Ending. He attacks her by cutting the line of her neck, causing Arcueid to threaten to kill him for real. Ciel appears and drags Shiki away, before Arcueid recovers. Ciel fights against Arcueid, but she is quickly defeated. Shiki escapes and kills part of nature in order to sever Arcueid's support from Earth. Arcueid is slashed on her lines and is forced to retreat to her castle. Shiki, realizing that he is becoming Roa, stabs himself in his point of death.Tsukihime - Near Side: Ciel's Route, 12/Endless Stone - 12th day/November 1 (Mon.) He falls into a dream of his own memories and speaks with his own Nanaya self. After seeing Shiki's determination to wake from his deathly dream, Nanaya dies in Shiki's stead, forever erasing the memories of the Nanaya family from Shiki's mind. Shiki wakes to a sobbing Ciel.Tsukihime - Near Side: Ciel's Route, Daylight Blue - an epilogue
If Shiki tells Arcueid that he is attracted to her, it results in Ciel's Good Ending. After his response, Arcueid kisses him and has him drink a small amount of her blood. This makes Shiki's will stronger than Roa's own. Ciel arrives and says that if Shiki kills Arcueid, Roa will die as well. As both girls prepare to fight to determine how to get rid of Roa, he overtakes Shiki's body, worn out from trying to stop the two. Heeding Arcueid's advice, Shiki slashes the line in his chest in order to kill the weaker "soul" within himself. After that, he has a vision of Roa before he started reincarnating and Roa dies. After killing Roa, both Ciel and Arcueid "share" Shiki, resulting in a sort of harem ending much to Ciel's chagrin.Tsukihime - Near Side: Ciel's Route, Sun - an epilogue
====Akiha's Route====
Shiki returns to the Tohno house after years. He fondly remembers the times he spent with his sister Akiha. He also feels guilty because of the strict upbringing she received after he had to left the Tohno house. Unfortunately for Shiki, his reunion with Akiha is not exactly as he had hoped it to be. She is cold and distant to him, immediately demanding that he adopt a lifestyle befitting of the eldest son of the Tohno family. Akiha scolds Shiki over everything, which causes him to believe that she might bear a significant grudge over his absence the last eight years.Tsukihime - Far Side: Akiha's Route, 1/Inversion Impulse I - 1st day/October 21 (Thur.) When Shiki goes to school, he realizes that his classmate Satsuki is gone.Tsukihime - Far Side: Akiha's Route, 2/Inversion Impulse II - 2nd day/October 22 (Fri.) Later it is revealed that she was turned into a vampire by SHIKI.
When Shiki, who had just crossed ways with Satsuki Yumizuka, returns home he is scolded by Akiha but she later treats his wounds. The next day, Shiki decides to confront the vampire Satsuki after he promises to Akiha that he would come back home safe. Satsuki tries to turn him into a vampire to be with her forever, and at that moment Shiki realizes his feelings for Akiha and their promise. Motivated by it, he kills Satsuki, although regretfully. When he returns home, he notices that Akiha was waiting for him the whole time and she chastises him for returning wounded.Tsukihime - Far Side: Akiha's Route, 3/Inversion Impulse III - 3rd day/October 23 (Sat.)
Akiha decides to spend more time with Shiki by joining into the same school at him.Tsukihime - Far Side: Akiha's Route, 4/Dark Scar I - 4th day/October 24 (Sun.) Like Arcueid, she does not like Ciel.Tsukihime - Far Side: Akiha's Route, 5/Quiet Dream - 5th day/October 25 (Mon.)Tsukihime - Far Side: Akiha's Route, 6/Deep Dream - 6th day/October 26 (Tue.)Tsukihime - Far Side: Akiha's Route, 7/Deep Scar II - 7th day/October (Wed.) It is revealed through the route that Akiha often struggles to maintain control over her Tohno blood and resisting her Inversion Impulse, which she has difficulty with due to her also maintaining Shiki's life, to the point she also had to drink Kohaku’s blood.Tsukihime - Far Side: Akiha's Route, 8/Afternoon Dream - 8th day/October 28 (Thur.) Shiki fights Ciel.Tsukihime - Far Side: Akiha's Route, 9/Bloodsucking Demon - 9th day/October 29 (Fri.) When Ciel vanishes, Akiha reveals to Shiki that she always knew that Ciel was different and she was unaffected by her hypnosis. Due to the recent killings in the city recently, Shiki believes that Akiha might be the vampire who did it and goes to the Tohno house. When he arrives, he sees Akiha unconscious and that SHIKI Tohno is there. He tells him that he went to take Akiha "back with him" and reveals to Shiki all the truths of their childhood. However, Akiha regains consciousness and protects Shiki.Tsukihime - Far Side: Akiha's Route, 10/Sweltering Night - 10th day/October 30 (Sat.)
 
The two have a confrontation about Shiki, only for Akiha to say in his face that Shiki is her brother now and that she does not consider SHIKI as her brother anymore. SHIKI is angered of this revelation and aims to kill him, but Akiha protects Shiki and takes the attack. This causes Shiki to have a homicidal impulse and cut SHIKI’s lines. After that, Akiha and Shiki talk in her room, where she tells him that in fact, Shiki was adopted after SHIKI killed him and due to it, their minds are connected and he took a part of his life (she also tells him that she believes that one of the causes of their connection might be related to the fact Shiki and SHIKI used to be best friends when younger). Then, she starts having spasms and her hair turns red. Akiha confesses to Shiki that she was aware from the beginning that he is not her real brother, but she felt that it was the only way for her to be with him. However, Shiki reassures her that he loves her as a sister and a woman and they kiss and have sex together. After this, SHIKI is filled with jealousy and reveals to Shiki that Akiha has been maintaining his life since he died eight years ago. Akiha is later kidnapped by SHIKI.Tsukihime - Far Side: Akiha's Route, 11/Telescope - 11th day/October 31 (Sun.) Later, when Shiki comes to the abandoned room in order to confront SHIKI and save Akiha, he discovers that SHIKI turned her into a mindless, bloodsucking creature and apparently he raped her offscreen. Both fight and Shiki manages to debilitate him. However, at the last moment, Shiki hesitates to kill him so SHIKI uses the last of his energy to return to the abandoned house and see Akiha. Surprisingly, Akiha, now a mindless monster, kills SHIKI by ripping his heart out. Shiki is given three choices:Tsukihime - Far Side: Akiha's Route, 12/A Finale - 12th day/November 1 (Mon.)
-To kill her to end her suffering (which she requested for him to do if she ever became like this). This gives no special ending and is considered a bad end.
- To allow her to live on as the demon that she currently is (because Shiki cannot bring himself to kill her). This results in Akiha's Normal Ending, where Shiki maintains Akiha at the abandoned room and tries to contain her bloodlust by himself, by routinely letting her painfully bite him and suck his blood out of the wound, all the while hoping that someday she will find herself again.Tsukihime - Far Side: Akiha's Route, Distant Reed Warbler - an epilogue
- To kill himself (so that she will regain the life energy she gave Shiki when he died eight years ago, and then will be restored to her full strength so she can more easily resist her Tohno blood impulses and restore her mind). With this, Akiha's True Ending is obtained, in which Akiha regains her sanity and when she wakes up, she realizes what Shiki did. Akiha is able to live a normal life and returns to her old school. One day, she goes to the place where he died and sees Shiki's Nanatsu Yoru knife. Despite the fact that Shiki should be dead, Akiha touches the knife and senses deep inside her that there still seems to be a faint heartbeat that is not her own. She recognizes this as a sign that Shiki is still somehow alive somewhere, and that as long as she feels it, she has hope, and declares that she will faithfully await his return.Tsukihime - Far Side: Akiha's Route, Warm Afternoon Nap - an epilogue
In Kagetsu Tohya, a 'sequel' scenario to Akiha's True Ending can be unlocked where at the end of the scenario, Akiha receives a letter from Ciel that reveals that Shiki did in fact survive.Kagetsu Tohya - Ten Nights of Dream, A Story for the Evening
====Hisui's Route====
Shiki returns to the Tohno house after 8 years. He remembers about a cheerful girl he got along with and a quiet girl who gave him a ribbon, but he cannot remember their names.Tsukihime - Far Side: Hisui's Route, 1/Inversion Impulse I - 1st day/October 21 (Thur.) After meeting with Hisui and Kohaku, Shiki mixes the two maids up, believing Kohaku to have been the girl he always played with and Hisui the girl who stayed in the mansion. Hisui's demeanor has changed so much, that rather than being the active girl he knew as a child, she has become severe and emotionless.Tsukihime - Far Side: Hisui's Route, 2/Inversion Impulse II - 2nd day/October 22 (Fri.)Tsukihime - Far Side: Hisui's Route, 3/Inversion Impulse III - 3rd day/October 23 (Sat.) During the Welcome Party for Shiki, Hisui, not used to drinking but wanting to do it for Shiki, drinks only one glass and then falls asleep. Shiki carries her to his room so she could rest and then he falls asleep as he remembers that the first person he met at the Tohno house when he was a kid was a cheerful girl who convinced him to play outside with the others.Tsukihime - Far Side: Hisui's Route, 4/Cradle Garden - 4th day/October 24 (Sun.) When he wakes up, he finds that Hisui is sleeping on top of him, but apparently nothing happened.Tsukihime - Far Side: Hisui's Route, 5/Killer I - 5th day/October 25 (Mon.)
Hisui, because she knows of the abuse inflicted upon Kohaku, refuses to let any male so much as touch her, the one exception being Shiki later in her path. Still believing Hisui to be the quiet girl who gave him the ribbon, Shiki gives Hisui the ribbon back.
More and more about her personality and who she truly is revealed. Rather than the stern, immovable young lady she appears to be, Hisui is revealed to be a kind, loving and emotional girl, hiding her emotions to keep her sister as she is. Becoming a daily part of Shiki's life, Hisui wakes him up every day and prepares his uniform.Tsukihime - Far Side: Hisui's Route, 6/Killer II - 6th day/October 26 (Tue.)Tsukihime - Far Side: Hisui's Route, 7/Transparent Scratch - 7th day/October 27 (Wed.)Tsukihime - Far Side: Hisui's Route, 8/"Death" - 8th day/October 28 (Thur.) However, she is hiding a darker secret, as she knows of her sister's plans for the downfall of the Tohno family, and after Shiki becomes paralyzed due to SHIKI stealing his life energy,Tsukihime - Far Side: Hisui's Route, 9/Burning Body I - 9th day/October 29 (Fri.)Tsukihime - Far Side: Hisui's Route, 10/Burning Body II - 10th day /October 30 (Sat.)Tsukihime - Far Side: Hisui's Route, 11/Burning Body III - 11th day/October 31 (Sun.)Tsukihime - Far Side: Hisui's Route, 12/Daydream - 12th day/November 1 (Mon.) Hisui offers her ability to Synchronize with Shiki so that he can stop SHIKI. She then accompanies Shiki as he goes to the school.Tsukihime - Far Side: Hisui's Route, 13/Golden Cocoon - 13th day/November 2 (Tue.)
In Hisui's True Ending, after Kohaku reveals that she was responsible for the deaths of Akiha and SHIKI Tohno, she commits suicide by stabbing herself in the chest to end her "doll's existence". However she has no regrets, since due to her sacrifice Hisui was never touched by Makihisa. Hisui begins a relationship with Shiki and later accompanies him on his vacations. Before going, she throws Kohaku's ribbon to the sky, "returning" it to its rightful owner.Tsukihime - Far Side: Hisui's Route, Midday Moon - an epilogue
In Hisui's Good Ending, after Kohaku reveals the truth about her participation in the downfall of the Tohno family, and claims that she hated Shiki because, unlike the others, he always acted like he wanted her to come outside to play with him. Hisui appears and tells Kohaku that what she is saying is not true and that she truly loved Akiha and Shiki. She also tells her that if Kohaku was genuinely attempting to take on her role, using Hisui's original cheerful personality as her own, to never hate Shiki is an integral part of it. After Hisui's words, Kohaku ingests poison in order to commit suicide. She is saved by Shiki, who cuts the "lines" of the poison within her. She later loses her memory and she is renamed "Nanaya" by Shiki and Hisui, and returns as a peaceful maid to the Tohno Mansion. After that, Hisui takes Shiki to her favorite spot to see the city together.Tsukihime - Far Side: Hisui's Route, Dreams of Sunshine - an epilogue
====Kohaku's Route====
Shiki returns to the Tohno house, where he is greeted by Kohaku. Like in Hisui's route, he wants to give back the ribbon that the quiet girl who watched him from afar when they were young, gave him; but he mistakes that girl for Hisui.Tsukihime - Far Side: Kohaku's Route, 1/Inversion Impulse I - 1st day/October 21 (Thur.)Tsukihime - Far Side: Kohaku's Route, 2/Inversion Impulse II - 2nd day/October 22 (Fri.) Just like in the previous routes, Shiki kills Satsuki Yumizuka.Tsukihime - Far Side: Kohaku's Route, 3/Inversion Impulse III - 3rd day/October 23 (Sat.) During the Welcome Party for Shiki, after drinking all night, Shiki goes out to cool a little where he talks with Kohaku about the quiet girl, the ribbon and the promise. Kohaku looks at him with concern as she warns Shiki that he will only find suffering in the Tohno house and wonders aloud why did he have to return.Tsukihime - Far Side: Kohaku's Route, 4/Cradle Garden - 4th day/October 24 (Sun.)Tsukihime - Far Side: Kohaku's Route, 5/Cain I - 5th day/October 25 (Mon.)
SHIKI Tohno catches a drugged Shiki going berserk and killing some people in a back alley. Both have coffee on a park bench while discussing life and how they both fit into the world, and joking with each other like friends. SHIKI even points that Shiki reminds him of his precious childhood friend, not realizing that he is the same person. In the end, SHIKI does try to start a fight, but Shiki tells him that he's superior in a fight to the death. Surprisingly, he agrees with him, and decides to give up and leave town for good. Noticing that Shiki is intrigued about the mysteries about his past, Akiha tracks down and kills SHIKI before Shiki even starts having dream visions of him. Kohaku helps her in doing so.Tsukihime - Far Side: Kohaku's Route, VI/Future Vision, Future Death 
Shiki gets sick and rests in Kohaku's lap.Tsukihime - Far Side: Kohaku's Route, 6/Cain II - 6th day/October 26 (Tue.) Hisui reveals to Shiki that Kohaku is the girl who gave him the ribbon in their past. Due to SHIKI's ability of immortality and the nature of Akiha's powers, he transfers the burden of his madness caused by the inversion impulse of his Tohno blood over to her when Akiha absorbs his energy to kill him.Tsukihime - Far Side: Kohaku's Route, 7/Evil at Every Corner I - 7th day/October 27 (Wed.) After this, Akiha begins to slowly succumb to the Tohno blood, despite her originally being quite capable of controlling it. She synchronizes with Kohaku in an attempt to suppress this, but it is not enough, since she now has SHIKI's bloodlust itself.Tsukihime - Far Side: Kohaku's Route, 8/Evil at Every Corner II - 8th day/October 28 (Thur.) She begins hunting for victims on the streets at night in SHIKI's place because she can't control herself, with only Kohaku being aware of it.Tsukihime - Far Side: Kohaku's Route, 9/Origami - 9th day/October 29 (Fri.) 
Kohaku reveals everything to Shiki and comments that Akiha is out of control. According to her, the only way to stop it is by reciprocating Akiha's feelings for Shiki. However, Shiki refuses to do such thing because he loves Kohaku and returns the ribbon to her. He says to Kohaku that he knew she was the girl in the window because their promise was made not outside the gates of the mansion as Hisui said, but at the tree in the garden. Kohaku cries and decides not to continue with her revenge on the Tohno family. She and Shiki have sex and she offers her ability to Synchronize with Shiki so that he can stop Akiha. However, Kohaku then tricks him into swallowing a sedative so she could go by herself, atoning for her actions. Shiki is able to resist and goes to the school.Tsukihime - Far Side: Kohaku's Route, 10/Locks of Hair - 10th day/October 30 (Sat.) There, Akiha tells Shiki that the Tohno family has wronged Kohaku to an incredibly degree and everyone, even him, to Kohaku, are just pawns to her revenge. However, Shiki tells Akiha that he loves Kohaku no matter what, prompting her to attack Kohaku by piercing her chest with her hair. Shiki is devastated by this and attacks Akiha, however he realizes that he cannot bring himself to kill her. At that moment, Kohaku appears, seemingly with no fatal wounds, telling Akiha to stop because she holds no resentment towards her and she has already forgiven the Tohno family. Akiha realizes that the reason why she did not succeed in killing Kohaku is because she subconsciously did not want to kill her.Tsukihime - Far Side: Kohaku's Route, 11/Nanaya - 11th day/October 31 (Sun.) 
Kohaku is the only character with only one ending, which is also her True Ending, in which she decides to forgive the Tohno family and goes on a vacation with Shiki to the Nanaya forest.Tsukihime - Far Side: Kohaku's Route, DREAMS OF SUNSHINE - an epilogue
====Eclipse====
Shiki rests and relax in a grass field and meets with Aoko Aozaki once again at night. After he tells his teacher about what he experienced, Shiki is told that he has not much longer to live due to overusing his Mystic Eyes. Aoko feels guilty that Shiki tried so hard to live a moral life as according to her suggestion, when he would have had a much easier time had he "broken" completely. Shiki replies that even so, he was happy living such a life and that Aoko has nothing to feel sorry for. After Aoko tells Shiki that he had truly grown up to be a wonderful man, the two part ways, never to meet again.Tsukihime - "ECLIPSE"
===Kagetsu Tohya===
One year after events of Tsukihime, while rushing to school, Shiki sees a truck about to hit a cat, and saves it. He is able to dodge the truck, but hits his head on the sidewalk, being sent to the hospital shortly afterwards.Kagetsu Tohya - Twilight Grass Moon, Fairy Tail Princess, op
He enters into a dream world where the same day would repeat over and over, thanks to Len.Kagetsu Tohya - Twilight Grass Moon, Fairy Tail Princess, a day
Shiki does not realize that he is dreaming so he continues living his life normally. Unaware of anything around him until the world crumbles due to Len's mana running out, he starts to notice strange things that happen around this world such as a hallucination of the world's end, a mysterious killer, his encounters with Len in both human form and cat form and a vague memory from the previous day.
Shiki tries to solve the murders and fights the killer, who is revealed to be Shiki Nanaya. He wins instantly in the first night, but after the same day repeats, Nanaya appears before him again and meets with him several times outside the mansion and his school.
Eventually, Shiki faces off with Nanaya once again. Nanaya complains about their last fight, though Shiki does not remember it. They fight but Shiki is overwhelmed and killed after noting that Nanaya had mastered the Nanaya Arts that he would have learned if his clan was not destroyed.
At night, Shiki sees through Nanaya's eyes in his nightmare. He learns that Nanaya chose Len as his next target, realizing that she is the reason that he could not permanently kill Shiki. When he awakens, Shiki desperately makes his move and confronts Nanaya before he can achieve his goal. It is revealed that Nanaya is a nightmare manifestation version of Shiki himself, embodying his greatest fear. Unlike before, Nanaya lets out his urge by repeatedly throwing his knife at Tohno instead of fighting him using his technique or instinct. After their short fight, Kouma Kishima, an incarnation of the "death" of the world itself, appears and crushes Nanaya. After this death, Nanaya does not appear in the dream.
As long as Kouma exists, Shiki cannot go back to his world because of Len's state. Len decides to settle things, giving him a farewell kiss and going off to face Kouma alone. In next day, Shiki goes to a place from his childhood, Nanaya's Forest. Just as he thought, he meets with Kouma and the nearly dead Len. He claims that he could endure Kouma's attack 3 times, but is surprised that he can endure far more. After realizing that the concept of "death" that Kouma embodied was weakening every time Shiki blocked or dodged his attacks, Shiki calls Kouma a fake and uses his Mystic Eyes of Death Perception to kill Kouma.
After everything is settled, he meets Len at a tea garden and forms a contract with her, leaving the dream world.Kagetsu Tohya - Twilight Grass Moon, Fairy Tail Princess, ep
===Melty Blood===
Shiki_meets_Sion.jpg|Shiki meets Sion.
Shiki_facing_Wallachia_Satsuki_MELTY_BLOOD_Manga.png|Shiki facing the manifestation of Satsuki in the Manga.
Melty Blood features his side as a killer, Shiki Nanaya, given form by the Night of Wallachia similarly to Kagetsu Tohya.
The story seems to take place after the "Normal Ending" of Satsuki Yumizuka's route in Tsukihime (which was never implimented in the Visual novel). The route followed the same events as Arcueid's route but the situation of each heroine didn't change. In the manga, it is mentionned that Shiki had to kill Satsuki, not being able to save her like he had promised.Melty Blood Manga - Chapter 14: "Thank You" The story is extended when Wallachia manifests as Satsuki and Shiki has to face her and kill her once again.Melty Blood Manga - Chapter 11: "Promise"Melty Blood Manga - Chapter 12: "One Mind"Melty Blood Manga - Chapter 13: "Pain" In the scenario of MELTY BLOOD ReAct, Shiki never killed her.
After hearing rumors about a vampire killer, Shiki decides to patrol around the city to figure out what was happening. During one of his patrols, he meets for the first time Sion Eltnam Atlasia. Later on they meet each other again at night time and she assaults him.Melty Blood - Block A: 1/Encounter and Reocurrence - Enter Whether he looses against her or not, he joins her in order to help her find the cure to her vampire impulses.Melty Blood - Block B: 2/The Daughter of Atlas - Sion Eltnam AtlasiaMelty Blood - Block C: 2/Alchemist of Atlas - Extra Alchemist He then helps her fight Ciel. They then fight fake Arcueid Brunestud.Melty Blood - Block D: 3/Fierce Heat, With Scattered Lies - Alice's anxietyMelty Blood - Block E: 3/Cry Out, You Flies - Alice's insanity The next day, the Night of Wallachia will manifest as Nrvnqsr Chaos.Melty Blood - Block G: 4/Distant Farewell - StardustMelty Blood - Block H: 4/If You Call That Name At Night - Around and Alone In a certain route of the game (or the one portrayed in the Manga), Tatari makes Sion succumb to her vampire side.Melty Blood - Block M: 5/If the Sight Dawns - GOODBYE After overcoming all these obstacles, Shiki and Sion won't be able to kill TATARI because he doesn't have a body.Melty Blood - Block L: 5/Lord of Lies - AGITATOR The true Arcueid will eventually show up and create a scenario where the Crimson Moon makes an appearance, forcing Zepia Eltnam Oberon to manifest in his Dead Apostle form. This situation then allowed Shiki and Sion to ultimately kill him.
In other routes, Shiki fights Akiha Tohno, Hisui,Melty Blood - Block F: 3/What Is This - dead end love song! Mech-Hisui,Melty Blood - Block J: 4/Fight On, Our ○○○○ Hisui - M X M X M X M and G-Akiha.Melty Blood - Block O: 5/The Strongest Enemy - G.
====Melty Blood Actress Again====
Melty blood shiki tohno ending.png|Shiki Tohno's ending
Wandering around the city, he meets an another time with Sion but seems to not recognize her. She tells him to not involve himself in the current events and attacks him like in Melty Blood. After beating Sion, he asks Kohaku to take care of her, saying that he would apologize himself to Sion after dealing with everything that was happening.
Facing many adversaries, Shiki goes to the park in order to respect his promise he made to Arcueid but he is welcomed by Red Arcueid. Shiki notices that she isn't the real Arcueid making her reply the fact that she doesn't want to people to confond her with the real one, declaring that she is the manifestation of her vampire impulses. She explains that she took form because of the Reality Marble that was around the city and that she would disappear at dawn. Before that, she says that she want him the be hers, specially his eyes, attacking him directly.
After this fight, Shiki starts remembering about the Night of Wallachia. Going to the Sanctuary, he meets Riesbyfe Stridberg who was garding the entry. She orders him to leave because humans with talents like his weren't allowed to stay in a place like this. However Shiki says to her that he would never have reached this place without it and tells her that compared to the other people he met in his way, she is the first one that he didn't know the face. She states that she wasn't waiting any less from the one that defeated the Night of Wallachia and that he was able to destroy the Reality Marble they were in without any kind of magic, engaging a fight with him.
Passing Riesbyfe, Shiki is finally able to see the Dust of Osiris and shows himself dazed in front of all the jewels that were in their surroundings. She explains that the jewels are Philosopher Stones, also called "Aqua Vitae" or "Water of Life", that allowed her to use TATARI. Shiki notices then that she is in fact Sion et remembers that he already had defeated TATARI and stays surprised over the fact that it came back. The Dust of Osiris also shows herself surprised over the fact that he recognized her as Sion, tells him that he is the greatest anomaly here. As Shiki tries to ask her how did she finished like that, notices that the stone are made of lines of death.
She explains that she wanted to reproduce the Night of Wallachia in order to change the ending where he kills Zepia because according to her, he is the reason why her other self exists and the reason why she will cease to exist. If he disappears, she will be able to become the only Sion. It is revealed that she is a Sion created by TATARI to kill Shiki in order to make the world where they were, real.
Shiki will defeat her eventually putting an end to TATARI. He then meets again with the Sion of his world, who tells him that this was the best ending that the Dust of Osiris could have, because for her, being destroyed by Shiki Tohno, is a salvation. She asks him to never forget the feeling he got when he was around her. This request makes him reply that he couldn't forget about her that easily because he was allowed to see how Sion would like when she would turn adult. Sion instantly takes it as a perverted remark and, embarrassed, she takes out her gun, telling him to forget about that.
===Talk. and Prelude===
Shiki appears in Talk. and Prelude under the name DEATH, one year after the events of Tsukihime.Tsukihime - Far Side: Hisui's route - Teach me, Ciel-sensei! (Lesson 29) He is referred to by Merem Solomon as , wordplay on and that was first used as a joke in a Teach me, Ms. Ciel ending. Satsujinki is commonly confused with DEATH as the pseudonym he was operating under at the time, but in fact, only Merem called him that. He had gradually become a rumor after gaining much fame, still the "same fool with a knife-fetish" accompanying Arcueid while complaining ceaselessly.
 He is a shadow like a Death God, deemed an elusive calamity in the world of Dead Apostles like Enhance.
 He wears bandages over his eyes rather than his Mystic Eye Killers, and he must unwind and wind them before and after battles (as they lost their effectiveness after constant usage of his eyes). He still wields his knife, and wears simple attire that is lacking in resistance compared to someone who would normally fight. Although both stories were written as introductions to a possible Tsukihime 2, there have been no further developments with the storyline.
During Talk., Shiki travels to Germany on the tip of a third party rather than a whim of Arcueid in order to seek out the Fruit of Einnashe for the benefit of reducing her bloodlust. He encounters Forte, and he easily defeats her despite placing no wounds upon her. She considers it her complete defeat, and asks for his name, though she is unable to understand his reply in Japanese. He then encounters Merem Solomon projecting his voice from outside his body, who notes that while they were to eventually meet, he had not thought it would be that soon. He describes Shiki's motivations in coming being similar to Ciel.
Shiki has a hard time understanding his English because he cannot speak it fluently, reacting to the mention of Ciel's name. Shiki displays a brief moment of killing intent, but Merem manages to calm him, saying that Shiki could not kill him because his body was actually elsewhere. Merem calls him honest in doing so, and though he had thought Shiki would be an emotionless killer, he instead describes Shiki as a contradiction whose purpose divides into two extremes, more specifically two completely different systems of thought. Merem guides him Einnashe's heart in exchange for an explanation of Einnashe's nature Shiki heard from Arcueid.
Merem relays the story to Ciel, and she deduces that it must have come from someone close to her. Merem confirms Shiki is within the forest in order to kill it, and notes that Shiki also muttered something about being amazed that she was there as well and flushed red from embarrassment. The forest begins to quake as it senses something capable of killing it approaching, and he manages to successfully kill it. He encounters Ciel, and she does not pursue him even though the Church had ordered for his capture as an important reference.
Prelude features him going after Louvre in order to steal a notably strong mace from his collection of magical wares. He manages to sneak into Louvre's castle while his minions, Barthomeloi Lorelei and her subordinates, and Enhance are battling, reaching his lair by cutting a hole in the ceiling as Louvre and his two children prepare to face the known threats. Though their power together should be at its height, he easily kills all three before they are able to notice him, takes the mace, and leaves before the others arrive. Lorelei, her pride severely damaged by having her prey taken from her, promises revenge upon Shiki for his actions.
==Abilities==
Eight years before the start of Tsukihime, SHIKI Tohno inverted and attacked Shiki Nanaya, stealing his Life Force to regenerate himself in the process. To keep Shiki alive, Akiha Tohno gave him half of her own Life Force. Because Shiki only has half the life energy of a normal person, he developed chronic . Despite his poor health, he boasts a well-built body. Unlike most of The Twenty-seven Dead Apostle Ancestors, Kouma Kishima, Aoko Aozaki, and Ciel who are powerful enough to fight a Servant with an extremely average Noble Phantasm, Shiki is no match for Servants, unfortunately.
 After gathering information about the events that happened in Tsukihime, Sion Eltnam Atlasia claimed that she was amazed by Shiki's survivability. She says that Shiki proceeding from one engagement of low victory probability to another can only be a miracle.
===Mystic Eyes of Death Perception===
Shiki's signature ability is the Mystic Eyes of Death Perception, a type of Mystic Eyes that allow him to see the “death” of things. Originally, Shiki's eyes were meant to "see that which cannot be seen". However, after having two near-death experiences, with the extermination of the Nanaya and his death by SHIKI Tohno, he was somehow connected to the「Root」, and his brain began to be able to comprehend the concept of death itself. To put it in other words, it is only by virtue of his Mystic Eyes and brain working together as a set that he is able to perceive death in whatever he sees.
 Furthermore, Shiki's eyes turn blue when he intentionally tries to see death. Seeing as how blue is the color of Pure Eyes, it's likely that Shiki's eyes were originally of that type.
Shiki's Mystic Eyes are a unique ability that allows the user to grasp the death of living beings as "points" and "lines." The lines are places where a substance breaks easily, and the points are death itself. If a line is cut, then even if the main body survives, that particular part will die, never to move again. Normally, Arcueid Brunestud can heal her entire body even if she was cut into 17 pieces, however, the wounds caused by Shiki's eyes stop her healing abilities, forcing her to remake her missing body parts from scratch at the cost of 80% of her power. If a point is pierced, then the individual will stop functioning completely. Though the eyes are said to see the form of death, strictly speaking, it's more accurate to say they're reading the lifespan of a substance – the existential limit determined at the moment of creation. The power to take a life is common in the World, however, Shiki's eyes are unique because they directly kill off the meaning/existence of the entity itself rather than their physical body. The extinguishing of life is only a side effect that derives from it. Shiki's eyes ignore the cause of death. Even against that which is immune to all external effects, he kills first. What is killed then becomes "dead". It's not that it stopped because he cut it. In his case, he stops the object, and as a result, it is cut. With his power, it is possible to kill the Soul without harming the body, preventing beings such as Michael Roa Valdamjong from reincarnating without killing their host. Sion Eltnam Atlasia states that not even Shiki can completely kill the Night of Wallachia since he is akin to a "phenomenon" that occurs after a set of circumstances are met. When Shiki sees TATARI's black sphere he is unable to see any "lines" on it, as it is just a conglomeration of "words". He cannot kill anything which is yet to exist. ORT, an extraterrestrial Ultimate One, is also immune to the Mystic Eyes of Death Perception since it doesn't have a "Concept of Death."
The human mind was not meant to perceive death in such a way, and using it is highly taxing on the human brain, causing painful headaches. This is partially the cause of Shiki's frail condition and his frequent . In addition, there are multiple levels of perception. While "lines" can be seen without consciously trying, seeing "points", the source of those lines, requires extreme concentration. Furthermore, lines cannot be perceived on things that can't be killed (destroyed) in the current World. Likely because as a human, Shiki's point of reference conforms to the limits of the humanity of his era. Different from Michael Roa Valdamjong's Mystic Eyes which could only see the life force of living beings, Shiki's eyes can see the death of inanimate objects as well. Be it animals, plants, walls, or the very air before him, Shiki can kill it. However, he can't read the "death" from an existence like Arcueid Brunestud. During daytime, some lines appear on her body, but at night, she is close to being a perfect life form that doesn't even carry a Concept of Death. Since Arcueid is weaker during the day, Shiki managed to kill her in the Near Side routes. Because Arcueid needed 80% of her energy to regenerate, she was so weakened that lines appeared on her body during the night as well. In Ciel's route, Arcueid is able to regain her strength the more she rests, and by the 7th day, Shiki can't see her death during the night. Five days later, Arcueid, now powered by a Full Moon, is so powerful that even by risking his own life and pushing his brain to its limits, Shiki can only see a few lines on her, but he still fails to see any points on her. Cutting one of them momentarily wounds Arcueid, but she can still heal it in a short period of time and resume fighting without much problem. In Melty Blood, Sion Eltnam Atlasia states that Shiki should probably be able to kill concepts beyond human comprehension. Due to this, she regards Shiki as the only one who can kill the Immortal True Ancestors.
The eyes' biggest weak point is that no matter how many "deaths" Shiki can see, he needs to trace the line with his own hands. Arcueid Brunestud initially claimed that despite being weakened after Shiki sliced her in 17 pieces, her athletic ability wasn't so low that she would be caught by him. Shiki notes that because he can't catch agile animals, he can't touch their bodies. In other words, even if he can see its lines, he can't kill anything that moves or is out of his reach.
===Combat===
Because of his Nanaya training as a child, Shiki possesses excellent physical ability, capable of feats comparable to at least an Olympic-level athlete. In terms of potential, Shiki even surpasses his father Kiri Nanaya,Melty Blood: "Your potential seems to surpass your father's, but your spirit and technique are lacking." (Kouma Kishima victory against Shiki Nanaya) the most powerful assassin in the history of the Nanaya family. He is capable of two unique styles developed by the Nanaya: , the ability to attack extraordinarily quickly, with an example being his Seventeen Divisions move spawned from , and , the ability to essentially "teleport", or move so quickly that one loses sight of him in an instant. These types of attacks are also shown to be styles branched into other attacks from the clan such as or , which Shiki's Nanaya persona usually shows focus on. Shiki has only learned the basics of the Nanaya Arts as a child, due to his father abolishing the demon hunting practice. He possesses the Nanaya family's characteristic murderous impulse against non-humans, but this appears to be, in most cases, a controllable impulse that is mainly meant to enhance his Nanaya Arts. It is suggested in the Near Side Routes, specifically in the battle against Nrvnqsr Chaos, that he possesses detailed knowledge of the human anatomy.
While Shiki was trained in the Nanaya's special martial arts, which strain the human body to its utmost limits, without any fear or hesitation, he normally doesn't use them due to having lost his memories.
 Even if he doesn't remember it, he has been trained for such things, and he instinctively uses them when faced with great danger. Despite not being good at feeling his opponent's presence, he is good at feeling his own death. This grants him a superior self-defense mechanism close to seeing the future, making surprise attacks to his blind spots useless as a means of assassination, as shown when Powered Ciel attacked him in Akiha's route. For that reason, Shiki's fighting style consists on frantically guarding against "the absurd attacks of absurd opponents." As his defense is weak, he will often get knocked out just with pokes; however, if he is able to get in close, then it is said he shows his worth as the main character. Once he attacks, death is unavoidable.Fourth character popularity poll: "For that reason, frantically guarding against the absurd attacks of absurd opponents is his fighting style. His defense is weak and you'll see him KOed often just with pokes; however, if he is able to get in close, that's when he shows his worth as a main character!...Once he attacks, death is unavoidable"
Shiki's primary weapon is a small knife, a relic of the Nanaya family named . It is a switchblade with a plain hilt, with its blade and hilt of a length around 10cm. The blade can alternately be called the Nanaya, taking after Shiki's real surname. The meaning of the name is the same as well as the kanji. Even though it's called a "treasured blade" it isn't actually valuable, it's just a sturdily-built knife. Though, mysteriously it has a complex switchblade design despite its considerable age.
Arcueid Brunestud states that in terms of non-fighting strength, Shiki is stronger than her. While Arcueid was still off guard with surprise, Shiki killed her with his first strike and just finished her off by slicing her into 17 pieces. In less than a second, Shiki drew his knife across Arcueid's body, stabbing slashing, piercing, driving, and splitting it into pieces. Through the neck, back of the head, from the right eye to the lips, upper right arm, lower right arm, right ring finger, left elbow, left thumb, left middle finger, left breast, from the rib to the heart, from the stomach to the abdomen in two places, left groin, left thigh, left leg, left toe. Arcueid states that this was the first time someone managed to "embarrass" her to that extent. She describes it as the perfect surprise attack; an unparalleled masterpiece.
The first time Shiki faced Nrvnqsr Chaos, Shiki was frozen in place and couldn't move. This was due to Nrvnqsr's Mystic Eyes of Enchantment which could suppress Shiki's weak will. However, Arcueid Brunestud states that Nrvnqsr's eyes are nothing special and that Shiki should be able to deflect his gaze even if he looked right into his eyes as long as he just discards his own doubts. When Shiki sees Arcueid's Mystic Eyes, he is greatly intimidated. His instincts scream telling him that he can't stand up to her because she is on an entirely different level. It's not a matter of her being higher or lower, but something beyond evaluation. His fear triggers his Killer instincts, and push him to kill her before she kills him instead.
Arcueid Brunestud claims that if Shiki attacked Nrvnqsr Chaos by surprise he would only succeed if he struck his "point" first. Starting by cutting off his limbs would be suicidal, as it would give Nrvnqsr the chance to retaliate. The difference between their offensive abilities is so great that if Shiki missed the first strike, he would have no chance of winning whatsoever. Although Shiki follows her command later on, his sneak attack fails due to Nrvnqsr's Familiars intercepting the attack. After disposing of Arcueid with the Soil of Genesis, Nrvnqsr sends close to 100 of his beasts to attack Shiki. Even though they could pick him apart in a single instant if they wanted to, they circle themselves around him and come to "feed" one at a time. Shiki gets serious and he kills 70 of them using his Mystic Eyes. Nrvnqsr recognizes him as a threat and attacks him with his full force, condensing all his 560 remaining beasts to the limit and transforming into the 999th Beast. In this form, his speed is as fast as Arcueid's, and his arms are strong enough to pulverize Shiki's neck if they made contact with it. While Nrvnqsr's body is covered by hundreds of "points of death" (one per each beast), Shiki still sees an "Ultimate Point" deep inside in his very center. The point that signifies the collective "existence" that is Nrvnqsr Chaos. By striking it, Shiki successfully kills not Nrvnqsr, but the "Chaos" which is him, defeating him in the process. Arcueid claims that Nrvnqsr's mistake was thinking he could kill Shiki painfully instead of killing him quickly before he could execute a counterstrike.
In Akiha's route, Powered Ciel attacks Shiki by surprise. While Shiki blocks her dagger with his knife, he is still pushed back. Realizing she won't be able to kill his consciousness before he feels pain, Ciel changes strategies and decides to fight him directly with her full strength. Despite Ciel only wielding a dagger, her attacks feel as if she was using a giant hammer, making Shiki's knife screech when he blocks her attacks. Because the attacks have too much momentum, Shiki can't block them completely. He manages to redirect a blow aimed at his heart to his side. Although he immediately twisted his body to avoid it, the knife ripped out one rib along with the flesh around it. Ciel and Shiki eventually reach a stalemate and Shiki gives up. While Ciel's intention wasn't to kill Shiki, she still fought him without holding back because she couldn't rule out the possibility of Shiki being Michael Roa Valdamjong.
During Shiki's first fight against SHIKI Tohno, SHIKI swings his knife numerous times at every part of Shiki's body. Shiki is able to avoid receiving any fatal wounds by moving his body past its limits to the point he's breathing hard. SHIKI is shocked he failed to kill him, and wonders why his ability to kill is so high. Even though Shiki had already seen SHIKI's killings in his dreams, he struggled to block his attacks and claimed that it was nigh-impossible to strike his "lines". However, if he didn't care to avoid mutual death, he could easily kill SHIKI. When SHIKI gets serious and drops his knife, Shiki's body alerts him that he won't be able to keep up with him and that he probably won't be able to see him attack him. SHIKI jumps forward to Shiki hoping to catch him by surprise, however, he was expecting that already. Despite Shiki raising his knife to face his enemy, SHIKI's nails are faster. The result would have been mutual death had they not been stopped by Akiha Tohno.
Previous to Shiki's and SHIKI Tohno's 2nd fight, Shiki's body had reached its limit and he couldn't move like he wanted to. In fact, he was so exhausted that one step felt like a hundred. Using all its energy just to stay alive, it'd be suicidal to fight in that state, but he fought SHIKI regardless. When SHIKI swings his arm to strike down Shiki, he dodges it, and prepares to cut across the "line" on SHIKI's chest. At the very last moment, SHIKI creates a Blood Blade to catch his opponent by surprise, but Shiki realizes it was just an illusion and blocks SHIKI's weapon. Realizing he is at a disadvantage in a closed space due to SHIKI's long-ranged weapon, Shiki retreats to the forest. Shiki ambushes him outside and kills him by striking the "point" on his chest.
When Shiki Tohno first meets Akiha Tohno in her pseudo-Crimson Red Vermillion form, his body cries out telling him that he cannot win against her and that if he makes her angry, he'd surely be annihilated. Akiha also initially claims that if she got serious, then it would all be over in an instant. Right before Shiki was enveloped by her fiery aura, his body instinctively sensed the danger and jumped back so fast that he disappeared from Akiha's vision immediately. If he hadn't done that, there was no way he could have escaped. Akiha praises him, as he didn't hide behind anything. He just moved faster than her eyes can track. While Akiha holds the advantage in the hallway since Shiki doesn't have anywhere else to escape, Shiki is still able to cut her hair coming at him. Shiki notes that because they are in the middle of the night, her fiery aura is slower. If it was daytime, her vision, and her aura would probably be at the same speed, in which case, he wouldn't be able to kill her aura fast enough. When Akiha gets enraged at Kohaku, Shiki notes that her amount of power is entirely different than the one that was directed against him before.
If Shiki and Shirou Emiya fought, both with their powers at their max and ignoring the former's brain self-destructing due to overusing his Mystic Eyes of Death Perception, then Shiki would win. No matter how many swords Shirou makes, Shiki will keep "killing" them. The situation would change if Shirou could use a Mana Burst like Excalibur.
====Near Side====
In the Near Side routes, Shiki's body is strengthened after the fight with Nrvnqsr Chaos thanks to Arcueid Brunestud using one of his dead Familiars to replace Shiki's damaged body parts, reinforcing it in the process. Arcueid states that he "powered up" because of it and that his body is now tougher than it's ever been.Arcueid Brunestud reinforces Shiki's body with one of Nrvnqsr Chaos' Familiars in both of the Near Side routes, but at a different point in time in each route. In Arcueid's route, she heals him after killing Nrvnqsr, whereas in Ciel's route she does it after meeting Nrvnqsr in the hotel one day prior. Whether Shiki gets reinforced before or after the final fight with Nrvnqsr, their battle plays out the same way. While it was a bit unstable at the moment, in time, it would begin to imitate the properties of Shiki's body and his body would be back to its normal appearance. Arcueid states that if Shiki studied Magecraft, he might even be able to return the familiar to its original crocodile form.
In Arcueid's route, Michael Roa Valdamjong attacks Shiki during nighttime by surprise. Despite not being able to see Roa's body in the darkness, he can still see the "lines" and "points" in his body and target them. By swinging his arms through the dark after those lines, Roa is forced to defend himself from Shiki's attacks, stopping Shiki's knife with his own. Shiki notes that he is stronger than Roa and that at this pace he will win thanks to his overwhelming advantage. However, before he can kill Roa, Shiki momentarily faints due to Roa's appearance triggering his sealed memories about SHIKI Tohno. This gives Roa an edge to counterattack and forces Shiki to change from offense to defense. 
In Ciel's route, Shiki realizes that because SHIKI and himself share the same Life Force, the one with the stronger will will be able to use a greater percentage of it, gaining an edge in battle. Up until then, Shiki never thought as strongly about anything before. Due to this, Roa is weaker than Shiki. In the darkness, Shiki's knife crosses against Roa's claws. Although Roa's movement is almost blindingly fast, Shiki's body follows him regardless, noting that he moves as if his arms belonged to someone else. His eyes accurately look at Roa's "lines", making his body and brain feel as if they were on fire. Just like when he first saw Arcueid and felt the impulse to kill her, his body is like something else. Shiki cuts the lines in one of Roa's legs, his upper right arm, and his left collarbone area, at the cost of his own arm holding his knife. If Roa destroyed his remaining arm, Shiki would lose. Roa is impressed Shiki can match him and states that his eyes are more appropriate for him than SHIKI Tohno's body. Shiki cuts Roa's remaining arm and forces him to retreat.
During the final fight against Michael Roa Valdamjong in Arcueid's route, Roa was powered by a Full Moon, whereas Shiki was so weak he couldn't even stand. After Roa kills Arcueid, Shiki gets enraged and manages to stand up through sheer will. Shiki stabs the "point of death" in the walkway he and Roa are on. Roa's body is severely mutilated from the debris and Shiki stabs Roa's point with little resistance.
====Melty Blood====
In Melty Blood, Shiki's fighting abilities are enhanced due to having to fit with the story and allow him to act as a protagonist that can "fight normally," and he appears to be able to use the basics of the Nanaya Arts that he learned as a child without limitations. Shiki, who can participate in combat only by means of trump cards, a "3 of Hearts" in Tsukihime, can fight normally as a "Jack of Spades" in Melty Blood.
Sion Eltnam Atlasia states that Shiki is undoubtedly superior to her at fighting. Therefore, she has to use alternative methods to obtain victory. For the people in Atlas, fighting consists on assembling the proper ingredients ahead of time. One hour before ambushing Shiki, Sion revised all the data she had from him and calculated every single of his maneuvers. The numbers indicated that they were evenly matched, but that thanks to her thorough knowledge her chances of winning were high. Having already simulated all of his patterns, Sion claims that it was only logical she defeated Shiki. Sion rates Shiki's choices in combat at merely 70%. Even with the ability to inflict instant death, his tactics are still easily predicted using Thought Acceleration and Memory Partition. Shiki thought that no matter what he did, she was always one step ahead, reading his every move. Sion's method of fighting is entirely different from those he had faced before. Despite defeating Shiki, Sion states that the possibility for defeat still lay everywhere in their previous fight. Incorrectly choosing a branch of possibility would render everything useless. If Shiki had acted completely outside of predictive behavior, out of whim like he normally does, it would have not been surprising if she lost. Sion states she didn't finish him off because he might have used a very strong counterattack.
In the AGITATOR and GOODBYE routes, the roles are reversed and Shiki defeats Sion Eltnam Atlasia. Even though Sion had collected all his data, she could not finish reading it. She says that even if everything was walking on a tightrope, she can't believe she was finished before she even had a chance to start. She claims she lost due to carelessness, and that her performance was far below her standard. She miscalculated his power, causing her evasion abilities to miss by 0.5%. She claims that if not for that one small mistake, she would have won. In retrospection, Sion notes that she was never fully aware of his fighting experience. She says that having already fought against members of The Twenty-seven Dead Apostle Ancestors and an agent of the Holy Church, she can hardly be considered a threat to him.
In the GOODBYE route, Shiki defeats Sion TATARI 4 rounds consecutively. By that point, Shiki claims Sion's movements started becoming sloppy. Sion disagrees, saying she is calmly predicting his movements. Shiki contradicts her again saying she didn't use her thread or her gun, to which she replies she did. After her wounds heal, Shiki asks her if she's ready for another round, to which she answers that her body doesn't move. Despite being in a better physical condition than him, the mental strain caused by all her attacks being evaded was so great that she was exhausted.
In Melty Blood, Shiki defeats a fake Nrvnqsr Chaos created by TATARI and powered by an almost Full Moon. Although fake Nrvnqsr's power exceeds even TATARI's former potential, he eventually fades away since it didn't have enough strength of rumor to allow a full conceptualization. Shiki is surprised Nrvnqsr faded away, but not because it was simple compared to the real Nrvnqsr. In the first place, TATARI only recreates Nrvnqsr based on information, so he cannot be a true challenge. Shiki, being well-tuned to the life and death of an opponent he defeated before, is simply able to kill him once more. In the GOODBYE route, Shiki defeats fake Nrvnqsr yet again. 
Shiki fights Red Arcueid, TATARI in the form of a fake Arcueid Brunestud who has fallen to her Vampiric Impulses. Although it had the same powers as the real Arcueid, it wasn't fully formed since Shiki's anxiety was not sufficient enough for it to be a widespread rumor, which is the source of TATARI's power. Despite it being a failure, TATARI claims that it could almost pass as the real thing. In the GOODBYE route, Shiki defeats Red Arcueid on his own, surprising her with his Mystic Eyes of Death Perception. Red Arcueid states that she could kill Shiki in a flash if she let her know his secret, to which Shiki agrees.
In the AGITATOR route, Shiki fights the full manifestation of Red Arcueid powered by a Full Moon. Just by using a little of her power, Red Arcueid is able to recreate the Millennium Castle Brunestud using her Marble Phantasm. TATARI states that there are no restrictions to bind him there and that even though Shiki already killed the real Arcueid Brunestud once, he stands no chance against her. However, Shiki and Sion Eltnam Atlasia working together are able to defeat him due to TATARI's calculations only including Sion's numbers. While the real Arcueid knew Shiki was a wild card, TATARI did not. If Tatari had truly understood what Shiki is capable of, he would have never attacked him directly. 
Although Shiki is weak against Akiha Tohno, he defeats her in the G. route. In another route, Shiki loses on purpose. If Shiki was truly serious, Akiha would probably escalate things as well. Despite being under the control of Sion Eltnam Atlasia's Etherlite, Shiki was able to resist it enough to lose. Although Shiki was holding back, Akiha still hit him really hard, so after the fight concluded he couldn't keep attacking. Sion states that if she were to fight Shiki in that state her chances of victory would be extremely high. Shiki defeats G-Akiha.
When Shiki first sees Hisui and Kohaku adopt a fighting stance he feels that they are stronger than him. Because the two of them are so strong (2 orders of magnitude stronger than Shiki had imagined), he wasn't able to hold back against them. With the aid of Sion Eltnam Atlasia they are able to defeat the two of them. Even after receiving attacks that would give Nrvnqsr Chaos or Ciel pause, the two maids were still very lively. While Kohaku didn't receive any wounds due to being powered by TATARI at the time, Hisui received a few bruises. Shiki was later shown to be able to dodge a surprise attack from Kohaku and defeat her by going all out. Since Kohaku and Hisui cannot defeat Shiki and Akiha Tohno working together, Kohaku summons Mech-Hisui, her ultimate weapon, to fight them instead. Kohaku orders Mech-Hisui to fight Shiki, serious Akiha, and Sion Eltnam Atlasia simultaneously inflicting an amount of pain that won't be fatal. While she is defeated, Shiki states that it was a very taxing battle, both physically and mentally.
==Forms and Alternate Versions==
===Roa's Vessel===
In Ciel's route, Shiki slowly becomes the new host of Michael Roa Valdamjong's Soul after the death of his eighteenth incarnation SHIKI Tohno, due to the spiritual link between the brothers. This caused him to go insane and develop the body of a Dead Apostle.
====Abilities====
Having become a Vampire, Shiki slowly gains the advantages of a Dead Apostle, such as strength, speed, and regeneration. 
;Combat
After Ciel learns that Shiki's body has been possessed by Michael Roa Valdamjong, she decides to power up and fight him with the Seventh Holy Scripture. Shiki is greatly intimidated by Ciel and initially believes that she should be able to pierce his heart and kill him without him even noticing it ever happened. In an instant, with a speed that makes her seem to have literally disappeared, she swings her weapon horizontally. While Shiki blocks the attack, his arm is broken in the process. Even knowing Ciel will run toward him again, it's hard for him to even see her, and ends up receiving a fatal wound. Despite breathing heavily, Shiki runs toward the school building at a speed that matches Ciel. In a Bad Ending, Shiki kills Ciel. Initially, he didn't believe this was possible because he estimated that Ciel should be able to pierce him with the Seventh Holy Scripture before he could get within knife range. To Shiki's surprise, he easily dodged her blade and was able to pierce her "point" with ease, killing her in the process.
The next day, Shiki fights Arcueid Brunestud powered by a Full Moon. In this state, Arcueid's pressure is nothing like when he confronted Ciel and Shiki can't even see her movements. They keep repelling each other, but Shiki notes that Arcueid isn't serious at all, and that it should be easy for her to rip off his arms and legs. While Shiki doesn't want to admit it, by this point, his body has surpassed that of a Human and become like SHIKI, probably able to easily jump off the third floor of a building and be just fine. However, from the very start, Shiki knew he couldn't win against Arcueid, since he couldn't see any "lines" on her. As Arcueid said once, during nighttime, there is nothing that can cause her "death". The reason True Ancestors won't die and have no limits is that they are an extension of nature, so they can draw as much power from the World as necessary. To kill Arcueid during nighttime, it is necessary to kill the source empowering her before. After a while, Shiki finds a large "point" on the ground, the "death" of the very World around him. By stabbing it, Shiki kills the nature that Arcueid draws all of her power from. When Arcueid charges at Shiki, she succeeds in impalling him, making blood pour out his mouth. Probably because her movement was so fast, he didn't feel any pain or shock. Then, the slicing sound finally reached his ears. Then, Shiki forcefully swallowed the blood pouring from his mouth and sliced the "line" on her chest with one hand, forcing Arcueid to retreat to her castle to regenerate.
==Notes==
==References==
Category:Characters in Tsukihime
Category:Humans
Category:Psychic
Category:Demon Hunters
Category:Vampires
Category:Dead Apostles
Category:Misaki Municipal High School students
Category:Tohnos
Category:Nanayas
Category:Residents of Misaki Town
Category:Japanese
Category:Introduced in 2000
Category:Voice - Kenichi Suzumura
Category:Michael Roa Valdamjong (topic)