Fuuma Kotarou

, Class Name , is an Assassin-class Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.
==Profile==
===Identity===
Fuuma Kotarou was the fifth to bear this title and served successor of - . Their original name derives from that of their village, which was , and they would normally earn provisions through hunting, lumberjacking and cultivating small fields. However, upon taking up a mission, they would call themselves "Fuuma" and have their dreadfulness become known across the land.
Different from Japan's representative ninja, the and , there are few reference documents about the Fuuma. The fact that the which they served dissolved during the is probably a big reason for that. Not even which kind of ninja tool the Fuuma used is certain.
The same can be said about their origins; even what sort of circumstances brought them to settle in the Kazama Valley is unknown. One theory also says that they were an equestrian tribe that immigrated from the continent. They themselves would never reveal their origins. At any rate, they were feared by all people due to their terrific group tactics, and Fuuma Koutarou was their chief.
Fuuma Kotarou is, strictly speaking, a name granted to the head of the Fuuma shinobi clan.
However, this is not the case like that of Sasaki Kojirou, where several legends are sublimated and a fictitious swordsman is brought forth; he is, without a doubt, the "fifth" Fuuma Kotarou.
Fuuma Kotarou, employed during the warring states period by the Houjou, daimyo ruling the Kanto region, had helped cementing the Houjou rule with those terrifying techniques of his.
Among the others, the Fifth is a legendary existence, winning fame as a thief even after Tokugawa's established age.
Fuuma Koutarou is descended from foreigners and, at the same time, also has the blood of the Oni kind mixed in his veins. For the sake of surviving that turbulent war period, the clan performed a thorough match manipulation and gave birth to him as the greatest masterpiece of "shinobi" - the leader of the Fuuma. An inborn chief and shinobi, the Fuuma party would thus welcome one summit.
===Appearance===
===Personality===
The crucial Koutarou had a nature that was both compassionate and discreet; thus it was said that, while his body was a summit as a shinobi, his mentality was not fit for a shinobi and he spent his days secluded in his room.
Fundamentally, he will accept any and every kind of order, even if said order is ambiguous in its nature of good or evil.
To have somebody die, to have somebody be ruined, to have somebody fall as prey, and simultaneously deciding which should be prey; in order to find the clear solution for those, almost anything and everything is permissible.
====Relationships====
;Katou Danzou
:"So Mother has been summoned. No, there is no need to inform her. She and I have never met... Let's just leave it that way. No sense making her feel that sense of loss."Fate/Grand Order Lines
:"There is a strong bond. A bond beyond that of a mother, a teacher, an elder sister; a bond beyond those and everything else."
;Kashin Koji
:“Kashin Koji-dono. You have done a lot for my ancestors and for my mother. Huh? If I'm interested in replacing any body part for machinery? Haha, I wouldn't go as far as... Huh? I'll be able to fly? Gi-give some time to think. Just a little. Give me three days.”
:“Kashin Koji-dono, thank you for the festival the other day. My intel says that Danzou-dono and our lord had a good time. Oh? About me? Right. It was threat after threat, but in the end, I can say I had fun.” 
;Sakata Kintoki
:Ah, the great senpai of Mt. Ashigara! Pen and paper, pen and paper! Can I get your autograph please?"
:"The great hero that I revere as my great senpai. Golden... Immortal Chaos Golden Brigade...!"
;Ibaraki-douji
:"A little while back, I had a conversation, er, a slight quarrel with Ibaraki-Douji. Out of spite, I said, "Watanabe-no-Tsuna will eventually be summoned to come after you." And...Ibaraki-Douji just muttered, "So Tsuna's coming..." Then she laughed. I had no idea that oni could laugh like that." 
;Ibuki-douji
:“Ibuki-douji... An entity more comparable to a god than to the oni kind. I personally envy her height more than any of the god or oni parts.” 
; Sasaki Kojirou
: "A samurai, huh... And a fictional one, too. It seems they are rooted in this country... The samurai..."
:"Putting the Fuuma after the Koga and Iga... absolutely unforgivable."
;Sugitani Zenjuubou
:"You're that warrior monk? I'm surprised to learn you were a priestess. You were a man until Kashin Koji-dono... I see. As her associate, I must apologize. Hm? You think I'm her next target? Haha, impossible! You would never, right, Kashin Koji-dono? Kashin Koji-dono...!?"
;Hassan of the Cursed Arm
:"In a sense... Hassan of the Cursed Arm-dono and I are very similar... He has a demon's arm, and I ascertain evil with an oni's body..."
; Li Shuwen (Old Assassin)
:"Li Shuwen-dono. ...Do you think I can special order that wooden sword of yours from him?"
;Jeanne d'Arc Alter Santa Lily
:"I think I did a bit of bad things to her. I apologize."
==Role==
===Fate/Grand Order===
The Fuuma shinobi clan had, since the time of the First, came up with all sorts of ingenious plans with the purpose to be cast as the greatest of shinobis of all time. Arousing the blood of oni kin, intentionally adopting the blood of foreigners, polishing and refining their art. Even further, by accurately cultivating the technique of the Fuuma in a karakuri kunoichi, they had prevented the degradation of information caused by oral and book instruction.
Their end goal is unknown, but in the course of casting the Fuuma shinobi clan as the greatest of shinobis of all time, several hundreds have lost their live, with the mantle passing on to the next.
Fuuma Kotarou, summoned as a Servant, is the fifth head and simultaneously the heroic figure bearing the lives of those several hundreds.
However, it is nothing short of irony for him to be lacking any sort of desire for the prestige, for the pursuing to be the greatest of shinobis of all time.
He wants the Fuuma to remain; yet even as he hold such a sentiment for some reason he did not pass on the technique of the Fuuma to anybody, instead leaving it hidden under the shadow of history.
====Event: Onigashima====
Due to his oni heritage, Kotarou is summoned to Onigashima.Fate/Grand Order - Onigashima: The Great Tale of Demons, Final Act: Ushi Gozen's True Form Seeing there were oni, he tried to observe and study their behavior closely in the hopes that it would unseal Ogre Trance. Unfortunately, the oni kept calling in reinforcements, and he was overwhelmed and rendered unconscious.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 2: Attack on Onigashima
He is soon found by Ritsuka's party, who proceed to kill the oni surrounding his unconscious body. Regaining consciousness, Kotarou helps the group slay more oni. However, they’re soon surrounded, so Kotarou decides to use his Noble Phantasm to create a diversion. Ushiwakamaru warns, though, that they lack the strength to breakthrough the oni. Suddenly though, Sakata Kintoki jumps from a nearby cliff on a motorcycle, and helps slay the remaining oni.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 1: Three Animal? Companions
Proceeding to a mountain pass, Kotarou explains his circumstances. He and Kintoki agree to help solve the mystery of Onigashima. He senses someone is watching them. Romani Archaman then sends him and Kintoki out on recon. Kotarou finds several forced human labor camps. He interrogates an oni and learns of a simple path to the mountain's peak, though it is blocked by three gates, each guarded by a great oni and a hired guard.
Kotarou returns to the others as they contemplate liberating a forced human labor camp. He calls it unrealistic to try and liberate every camp and suggests eliminating the mastermind instead. He then reports about what he discovered. the group then gets worried Kintoki hasn’t returned yet. Suddenly Romani and Kotarou detect something approaching, so the group hide and observe. They see higher-ranked oni leaving the camp. Given their ability to speak, Mash wonders if they can get information from them when Ushiwakamaru runs off towards them. However, the group spots a female Servant killing the oni and goes to help her. After the oni are slain, the Servant leaves with the hope they’ll cross paths again. Kintoki then returns and reports he found something akin to a human settlement, so the group head there to get information.
Ushiwakamaru assigns Kotarou the role of the pheasant as their journey reminds her of the tale of Momotarou. The group then comes to the first gate and meets Sasaki Kojirou. Sasaki tells them he was hired to slay the evil bird that shoots beams from its beak on the absurd notion that swallows and pheasants are the same. He then asks where the pheasant is, to which Ushiwakamaru shows Kotarou. Sasaki is angry that Kotarou is a person, explaining he came seeking a swallow equal to the one he fought that day. He calms down, though, upon learning who Kotarou is. However, his calling the Fuuma Clan second to the Iga and Kouga Clans sends Kotarou into a rage and prompts a fight.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 3: The First Great Oni Appears After defeating Sasaki and the great oni Kazakoemaru, the group pass through the first gate.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 4: Kazakoemarou Repelled
Arriving in the oni’s human slave settlement, the group encounters Musashibou Benkei. He tells them there is another settlement higher up. He was actually looking for the group when he ended up in the village. The group then leaves the village with Benkei.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 5: Of Oni and Men
Eventually, the group encounters a checkpoint. Seeing the path is too narrow and steep to go around the checkpoint, the group decides to break through. Disguising himself as an oni, Kotarou takes the others as human slaves. He tells the oni guard they were requested by the great oni. Once inside the checkpoint, he signals Kintoki, who sends the oni into disarray. The group slay the oni and get the past the checkpoint.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 6: Master and Servant
Continuing on the pass, Benkei suggests they gather information at a teahouse in the settlement up ahead .Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 7: Big Brother The group then arrive at the second gate where they encounter Tamamo-no-Mae and the great oni Wazahamimaru.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 8: The Second Great Oni Appears After defeating them, the group unlock and pass through the second gate.Fate/Grand Order - Onigashima: The Great Tale of DemonsDemons, Act 9: Wazahamimaru Repelled
Arriving in the settlement, the group finds Shuten-douji and Ibaraki-douji working at its teahouse. Shuten denies she and Ibaraki constructed the island and suggests they work together to defeat the mastermind of Rashoumon and Onigashima. But Kintoki rejects her offer and a fight ensues. Struggling against the group, Ibaraki asks Shuten for the Grail to regain the power she had in Rashoumon. However, the Servant from before arrives, and Kintoki reveals she is Minamoto-no-Raikou. After forcing Shuten and Ibaraki to retreat, Raikou chases after them while the group continues their journey up the mountain.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 10: Of Alcohol and Oni
Arriving at the third final gate, the group encounter Kiyohime and the great oni Gorikimaru.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 11: The Third Great Oni Appears After defeating them, the group unlock and pass through the final gate.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 12: Gorikimaru Repelled!
At the summit, they find Raikou standing before the Grail. Kintoki warns the others about getting closer, recognizing she isn't Raikou but her sealed oni self, Ushi-Gozen. Ushi explains how she created the island and its oni with the Grail and her Authority to create a refuge for those scorned by human society. Revealing she mortally wounded Shuten and slew Ibaraki a moment ago, she tries to convince Kintoki to join her as she constructed the island for him. She also reveals that she created the Rashoumon incident to make everyone kill each other by getting them intoxicated with the Grail’s wine. Kintoki refuses to join her and fights her with the others.Fate/Grand Order - Onigashima: The Great Tale of Demons, Act 13: And What of Momotarou
As the group struggle against her, Ushi prepares to finish them off when Shuten ambushes her, only to be slain by her. Kintoki uses the opening Shuten created and defeats Ushi with Golden Spark. Though, in truth, she jumped into the lightning to knock herself out. Raikou soon wakes up, having no recollection of being Ushi. Despite that, though, she recognizes the incident as her fault and apologizes for her behavior. After Raikou disappears, Kotarou begins to disappear due to his oni heritage. He feels he now knows the answer to controlling the monster within, at least part of it. He thanks Ritsuka and says he'll gladly lend his help if called. Kintoki asks him why he acted so humble towards him, feeling he didn't deserve it. Kotarou explains his clan's village is located on Mt. Ashigara, so he heard many stories about Kintoki growing up. Kintoki is surprised to learn they're from the same mountain and praises the name of Kotarou's Noble Phantasm. Kotarou thanks Kintoki and disappears, saying it was an honor to fight alongside him. 
=== Final Singularity: Solomon ===
Kotarou was amongst the "Special Event" Servant to aid Chaldea agaist Demon Gods Pillars.Fate/Grand Order: - Solomon - The Grand Time Temple - Act 09: X/ Andromalius, the Trash Heap And was also seen assassinating Goetia from behind in the animated films.Fate/Grand Order: Final Singularity - Grand Temple of Time: Solomon
====Christmas Event: The Second Generation is Alter====
Kotarou requests a present from Santa Claus and waits in anticipation for it. However, when Jeanne Alter Lily lands and introduces herself as Santa, he is confused about Santa being a child. Though annoying at being treated like a child, Alter Liy nonetheless gives Kotarou his present: a Japanese-English dictionary. She explains it will help him translate his Noble Phantasm's name, which has grammatical issues, into proper English. She disagrees with Tawara Touta that a Christmas present should bring joy as she believes a present must be useful to be good. She believes Santa needs to give people useful gifts so they can improve. She and Kotarou then get into a childish argument about what she said that escalates into a fight.
After being defeated, Kotarou accepts Alter Lily's gift. But he will not change his Noble Phantasm's name, instead, he'll use the dictionary to learn a few words of the language of his forefathers. That sentiment is also embedded in his Noble Phantasm's name, so he cannot change it. Alter Lily is disappointed in herself for trying to undermine that sentiment. But Kotarou thanks her for the dictionary, saying he'll add something to his Noble Phantasm's name in the future. After Alter Lily leaves, Kotarou and Touta realize she doesn't feel joy in delivering presents. Kotarou then notices Amakusa Shirou Tokisada is absent.
====Subspecies Singularity III: Shimosa====
Kotaro being summoned to Shimosa.jpg|Kotarou arriving in Shimosa due to his connection with Danzou.
Ritsuka and Musashi finds Kotaro.jpg|Ritsuka and Musashi finding Kotaro in an alleyway.
Kotarou is the only Chaldean Servant who successfully rayshifted to Shimosa to retrieve Ritsuka.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 5: Inferno (Middle) Unbeknowst to him at the time, it only worked because of his strong connection to the still living Katou Danzou.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 15: The Stage of Carnage, Onriedo (Ending) He arrives in Toke Castle town, but unfortunately the trip drained him of his magical energy to the point of collapse. The spell he brought with him to restore Ritsuka's comms was also left inert.
Ritsuka and Miyamoto Musashi find collapsed in an alleyway, and bring him into Otama‘s inn. There he explains his reasons and circumstances of his coming to Shimosa. He tries to explain to Ritsuka that they’re in a dream they cannot wake from when he passes out again. He wakes up though after hearing Ritsuka has been summoning in battle. He believes they’re temporarily borrowing the shadows of the Servant’s Spirit Origins. Ritsuka assures him they’ll forge a magical energy pathway, and Kotarou falls asleep again.
The next day, Kotarou has recovered some thanks to Ritsuka stopping his loss of magical energy. Unfortunately, his Spirit Origin isn’t stable yet for him to fight, though he is still willing if need be. The group then learns a large procession of samurai has recently arrived from Edo. Yagyuu Munenori explains they’re on an official mission to bring those responsible for the massacres in southern Shimosa to justice with Matsudaira’s cooperation. He then confronts Musashi, recalling they dueled six months ago. He decides to duel her to determine her intentions when monsters fly in from the south. After the monsters are slain and the samurai leave with Munenori’s new orders, Ritsuka tells Munenori their assumption that Archer of Inferno is leading the monsters. Munenori tells the group that a hundred of his finest men will confront Archer as a diversion while they ambush her from behind. He advises them to go through the mountain pass to do so. He then introduces Danzou as the spy who saw Archer leading the monsters. She will serve as the group’s guide through the mountain pass. Kotarou is shocked to see her, and assumes it’s coincidental that she looks like the one he knew.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 6: Inferno (Ending)
As the group walks the mountain pass, Danzou confirms she is an over century old puppet animated by machinery. Kotarou confirms she is a living person from the era. He decides not to tell Danzou his clan name, believing it’ll only confuse her. He says he is from the Sagami Province, which Danzou finds coincidental, since some of her installed ninjustu are from the Sagami clan. Kotarou then realizes Danzou doesn’t recognize him, to her confusion. Eventually the group reaches their destination and stops Archer from incinerating more samurai. Kotarou orders Danzou to take the injured to safety, and give the others new orders since they cannot stand against a Servant. Archer shouting Lord Yoshinaka allows Musashi to deduce her True Name as Tomoe Gozen. After Musashi slays her, the monsters are sent into disarray. The group then helps Danzou and the samurai deal with the remaining monsters.
Later, Kotarou is challenged by Musashi to a duel since he’s fit enough for battle now. After the duel, they learn a letter was sent to Toke Castle, threatening to assassinate Kiyohime. The group decides to head to Toke Castle, hoping Munenori will let them in.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 7: Paraiso (Beginning)
Inside Toke Castle, the group waits to meet with Kiyohime. They recall Senji Muramasa taking the children back to his hermitage. Kiyohime soon enters the room with Munenori. Kotarou realizes they’ve yet to see history distorted by the Grail. He feels something is fundamentally different about the world’s foundation. Kiyohime tells the group that many were killed when the letter was delivered. Despite having the castle guards and 300 of Munenori’s samurai to protect her, she asks the group to protect her as well. She then pays Musashi 30 ryou to spar with her to prove the results of her martial arts training. Musashi warns her not to fight her, even though she’ll be going easy on her, so Kiyohime orders Danzou to join her. Afterwards, Kotarou and Danzou praise each other’s ninjutsu.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 8: Paraiso (Middle)
Later that night, Kotarou guards Ritsuka in their room. He then senses a Heroic Spirit Swordmaster has infiltrated the castle. He and Kotarou arrive outside and convince the guards to leave Assassin to them. Assassin declares that news of Kiyohime’s death will plummet Shimosa’s people into despair, thus making Shimosa easier to destroy. She decides to kill Ritsuka in order to devastate Kiyohime, knowing she is infatuated with them. To demonstrate how easy it’ll be, she kills twenty guards with her snakes. Slaying her monsters, Kotarou asks her if her actions as a Swordmaster go against her wishes as a Heroic Spirit. She replies that a Swordmaster only exists to kill. Kotarou asks if committing such atrocities eats away at her soul. Assassin counters by asking how his soul feels when he kills other Heroic Spirits to grant his Master’s wish in a Holy Grail War. Kotarou, however, explains he asked as a fellow ninja. Assassin calls him an immature whelp, but Kotarou declares he’s stronger than her. He demands her surrender, enraging Assassin enough to attack him. After killing her once, Kotarou tells her that a soulless ninja is nothing more than a hollow blade. Assassin revives and decides to stop holding back. Musashi suddenly throws Myoujingiri Muramasa at her, only for it to miss and be caught by Kotarou. He then blocks Assassin’s kunai thrown at Kiyohime, who followed Musashi outside. Musashi slashes at Assassin, only for it to be an illusion, while the real one had already escaped. Danzou appears and reports that Munenori will arrive momentarily with his samurai. Kiyohime then faints after learning twenty castle guards were killed by Assassin. Danzou attends to her and offers to heal Kotarou’s injuries. He rejects her offer, stopping himself from revealing that he isn’t human.
Assassin later returns, and summons Orochi to kill everyone. Musashi and Kotarou slay it when Kiyohime suddenly attacks Ritsuka with her fire. Kotarou manages to protect them with his own body. Orochi then revives despite being reduced to ash by Kotarou’s Immortal Chaos Brigade due to Assasin’s Saigyou revival technique. Assassin then tells Kiyohime to kill the group, saying she’ll kill her afterwards. Kotarou realizes the kunai Assassin threw at Kiyohime last night was merely a feint to put her under a spell. The group then fight Kiyohime and Orochi. After Orochi is slain again, Musashi deduces Assassin is Mochizuki Chiyome. Musashi slays her, and Kotarou picks up her kunai that didn’t disappear with her since they were procured in Shimosa.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 9: Paraiso (Ending)
The group travel back to the hermitage accompanied by Danzou. Her new orders from Munenori are to gather information around Shimosa, and to ensure the group arrives safely at their destination. She finds it strange Kotarou isn’t injured despite what happened to him last night. She thought it was a Sagami ninjutsu, but her database doesn’t have a ninjutsu that would explain Kotarou’s rapid recovery. Kotarou says his body differs greatly from an ordinary person, but it isn’t because of any ninjutsu. He assures her that pain isn’t new to him, prompting Danzou to walk ahead of the others. Kotarou wonders if he did something to offend her.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 10: Kalasutra Hell (Beginning)
At the hermitage, Muramasa informs them that two women, whom they deduce to be Swordmasters, massacred an army near Arawaka Riber, destroyed the Sagami, and massacred larger settlements until high noon. . The group then suddenly hear Onui screaming from outside.
They rush out to find her and Tasuke captured by Shuten and Raikou. The Swordmasters overwhelm the group using only a fraction of their power. Raikou tells them to come to the peak of the nearby mountain before high noon if they wish to save the children. After they escape, the group prepares to go to the mountain.
After Muramasa forges a new sword, the group leave for the mountain. They cut through the nearby bamboo forest into a mountain trial. During this time Kotarou confesses to Danzou that he's a Servant. 
As they continue to ascend, Orochi suddenly appears, even though Chiyome is long gone. Kotarou realizes Shuten can summon it because she is a descendant of Orcohi. With the last of its energy, Orochi knocks Ritsuka down a slope. Kotarou goes to save them when another Orochi appears.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 11: Kalasutra Hell (Middle)
He and the others eventually find Ritsuka. He uses his clan's secret ointment to close their wound caused by Shuten. After getting more rest, Ritsuka continues onward to the peak with the others.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 12: Kalasutra Hell (Ending)
There the group demand Shuten and Raikou to give the children back. They doubt Shuten’s claims that she ate them, and slay the Orochi she summoned. After Shuten disappears, Raikou tells the group that the children are safe and unharmed in a small shrine up ahead. She asks them to defeat the Swordmasters and prevent the Onriedo’s arrival. After she disappears, Kotarou arrives with Onui and Tasuke. As the group leave the mountain, Kotarou realizes this world’s divergence from the Proper History didn’t begin in Shimosa or Toke, as Danzou is still operational.
At the hermitage, Ritsuka's party see day become the blood moon night. They assume another Swordmaster has arrived. Danzou sends up a flying observational device to see that Toke Castle has been transformed. Kotarou gets the horses that Muramasa provided ready for them to ride to town. Afterwards, he finds Danzou alone in Muramasa's smithy. He asks her if she's concerned about the situation as an agent of the shogunate or a lone ninja, or if something else is weighing on her mind. He confesses he'd personally rather have her remain at the hermitage, concerned about her safety. Danzou thanks him for his concern, but nonetheless decides to go with him and the others.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 14: The Stage of Carnage, Onriedo (Middle)
Arriving in town, Kotarou scouts on ahead, and assumes the castle is the cause of the monsters in town. He also says several townsfolk were turned into monsters. Danzou confirms the eastern area has been completely wiped out. They then notice Otama helping people evacuate. She confirms most of the survivors have already escaped an hour from when the carnage began. Munenori and his samurai fought the monsters long enough for the survivors to escape. Leaving the children with Otama, the group leave for the castle when two Orochi arrive. They slay one, then encounter the missionary who fought the other Orochi. He explains that the Sorcerer, Amakusa Shirou Tokisada, plans to sacrifice Kiyohime to Onriedo Castle to destroy every world where the Tokugawa exists. The group then rush towards the castle to save Kiyohime and stop Amakusa Shirou.
Danzou guides the group to the castle courtyard. There she tries to confess she is an enemy spy, but Musashi reveals it before she can. The group suspected her at different times; Musashi and Muramasa from the beginning; Kotarou after Chiyome’s demise; Ritsuka after Onui and Tasuke were abducted. Danzou reveals Saber commanded her to aid the group against the Swordmasters, while Ashiya Douman ordered her to kill them if the chance presented itself. Danzou recounts what Kotarou said to Chiyome and confesses she tried and failed to be that. She believes, though, she gained a soul, and guided the others to the castle of her own volition to stop its activation. Douman appears and mocks her for thinking such. He then explains how he found and altered her to serve him. Musashi attacks him, but a barrier stops her. Danzou also tries to attack her from behind, but Kotarou stops her. Danzou realizes Douman has been controlling her actions the whole time. Douman then calls the monsters that he’s been keeping at bay, which is why the group never encountered any in the castle so far. He also has Danzou fight the group, revealing he imbued her with a sorcery that recreates the Curse of Annihilation’s karma through machinery. The group slays the monsters, but Danzou is too fast for them. Danzou then self-destructs herself.
Kotarou apologizes to her for not calling her mother once in his life. Fighting as a Servant to save the world, he now sees why she fought so hard to do the same, feeling that fighting for what’s right differs greatly from struggling to survive in an age of war. He tries to say something else when he’s imparted with Danzou’s magical energy, the first Kotarou's magical energy he embedded her with. He then helps the others slay the innumerable monsters summoned by Douman. Douman casts the Curse of Annihilation on Musashi to transform her into a Swordmaster. Ritsuka however, uses the Mystic Code Rain of Isis to remove the curse. Musashi uses this opportunity to slash through Douman’s multi-layered barrier. After Musashi slays his spirit, Douman is wounded by Kotarou. While Myoujingri Muramasa should be the only blade capable of harming him, Kotarou was able to thanks to Danzou passing her will onto him. Kotarou recalls how Danzou raised him, calling her mother in everything but blood. He then seemingly finishes off Douman for his mother.
Mash, Leonardo da Vinci, and Sherlock Holmes make contact with Ritsuka. Kotarou realizes his connection to Danzou was why his rayshift could succeed. He also realizes the spell he brought with him was restored because he absorbed her magical energy. However, it will not last long since that world is outside the proper history. Da Vinci and Sherlock then explain what happened to Ritsuka. Sherlock reveals Shimosa isn’t a Singularity, instead an alternate world that poses no threat to humanity. Musashi is a Mobile Singularity, but she isn’t the only factor responsible for what happened to Ritsuka. When multiple Mobile Singularities are in the same world, several abnormalities and unusual phenomena will occur. Ritsuka and Muramasa deduce Amakusa Shirou is the other Mobile Singularity. After communications end, the group enters the castle keep.
The group reaches the keep’s 4th floor when Douman tries to ambush Musashi. However, before either can do anything, Saber kills Douman. Saber then reveals himself to be Munenori, the only human among the Swordmasters. He reveals he joined Amakusa Shirou for a chance to duel Musashi again. Kotarou and Muramasa go on ahead to the 5th floor while Ritsuka and Musashi stay to fight Munenori.
On the fifth floor, Kotarou rescues Kiyohime before Amakusa Shirou can sacrifice her. He and Muramasa, who realizes he was summoned to stop him, attack Amakusa Shirou. However, their attacks are useless. Ritsuka and Musashi then arrive to help fight him. Ritsuka and Musashi then arrive to help fight him until he traps them in Shimabara Hell. However Muramasa forges Tsumukari Muramasa upon hearing Onrideo Castle is ready to activate, and bisects both the Reality Marble and Onriedo Castle.
As the castle burns, Muramasa explains why his sword could reach outside the Reality Marble. Kotarou then pierces Amakusa Shirou’s heart with the kunai that Chiyome left behind and finishes him off. Deducing Ritsuka and Musashi are on the other side of the keep, Muramusa has Kotarou escape with Kiyohime. He then disappears since he used a divine sword without the body of a god.
The next day at Otama’s inn, Ritsuka asks Kotarou if Murasama’s Spirit Origin will be registered in Chaldea. He doubts it since this Shimosa exists in the rift between reality and dreams, so nothing that happens here can ever affect the Proper History. Onui and Tasuke are saddened to hear that Ritsuka and Kotarou will be leaving Shimosa. Kotarou tells the children they can choose to stay in town and ask either Kiyohime or Otama for help when they need it. They can also choose to return to the hermitage. Kotarou recommends the first option and tells them that Muramasa wouldn’t want to see them dispirited. Onui recalls Muramasa always said he’d leave someday. Though she misses him, Onui resolves to be brave and become like Musashi one day.Fate/Grand Order - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 16: See You Again Something, Flower at the Apex of Heaven
Kotarou returns to Chaldea ahead of Ritsuka and gives the full details about what happened.
====Heian-kyō: Naraka Mandala====
He and Mash attempts to rayshift alongside Ritsuka Fujimaru and Katou Danzou, but Mash and Fuuma were stopped by Ashiya Douman to go alongside the group.
====Event: Fūun Karakuri Illya's Castle====
===Fate/EXTRA Last Encore===
He is summoned by an unknown female Master during the Moon Holy Grail War. After arriving in the second floor, they both get killed during a fight with Dan Blackmore and Archer.Fate/EXTRA Last Encore - Episode 05: "The Bow of Prayer ― Yew Bow ―"
==Abilities==
In the Shimosa Singularity, after Katou Danzou entrusted him with the Magical Energy left to her by the first Fuuma, his power was greatly increased. In this state, Kotarou possesses more energy than most servants, however, he is still unable to equally match Caster of Limbo. Despite him being physically weaker, thanks to his mother's protection, Kotarou is capable of wounding Heroic Spirit Swordmaster with mere kunai.Fate/Grand Order: Epic of Remnant Shimosa: Section 14 Ultima Cantica: The Stage of Carnage, Onriedo (Middle) However, even when fighting alongside Senji Muramasa, they are unable to harm Shirou Amakusa.Fate/Grand Order: Epic of Remnant Shimosa: Section 15 Ultima Cantica: The Stage of Carnage, Onriedo (Ending)
===Skills===
==== Class Skills====
*Presence Concealment (A+ Rank): A skill that suppresses one's presence as a Servant. By perfectly suppressing his presence, detection is next to impossible. However, as he moves in preparations to attack, the rank of this skill drops considerably.
====Personal Skills====
*Subversive Activities (B+ Rank): The ability to reduce the enemy's war potential in the preliminary stage before going to battle. An expert of traps. With this skill at B Rank, it is possible to disable close to 30 percent of the enemy forces before they advance. In Fuuma Kotarou's case, the more subordinates he has the more the damage ratio increases. However, the higher the ranking of this skill is the more one's spiritual status as a hero declines.
*Ninjutsu (A+++ Rank): Consist of intelligence gathering skills, combat techniques, larceny skills, torture techniques, and etc. utilized by ninjas. At A++, one can be said to be on the class of Iga and Koga's head. At A+++, one stands shoulder to shoulder among the legendary ninjas. The system is unique for each school, and almost no documents related to the Fuuma shinobi clan brought to ruin by the Tokugawa house, are left behind. This Heroic Spirit, the fifth head of the clan, is thought to be chosen by means of his true strength and competency.
*Afraid of Your Own Shadow (C→C++ Rank (Upgrade)): A state that originates from soldiers of a defeated army being frightened simply from the sound of the wind, or the cry of the crane; from fear as the origin itself. As Fuuma Kotarou suppresses his presence and lays a surprise attack, by making use of his subordinates as if they are his own limb he is capable of intentionally reproducing the state of paranoia. The will to fight severely declines and all kinds of bad status effects are applied as a matter of course.
===Noble Phantasms ===
His main Noble Phantasm is Immortal Chaos Brigade. Summons the 200 spiritual body of his subordinates, then assaults the enemy group into disorder. Automatically put the the surroundings of the enemy group into darkness, throwing them into a hell of agonizing cries (Avici). 
Kotarou's second Noble Phantasm is Ogre Trance. It is his true form that had, for generations, been suspected to be that of an oni, or an existance comparable to it. And probably of the figure of one from a foreign country as well, from his stature and appearance.
==Development==
===Creation and Conception===
Fuuma Kotarou was designed by Shounen Sasaki in Fate/Grand Order.
==References==
Category:Servants
Category:Assassin-class Servants
Category:Characters in Fate/Grand Order (Part 1)
Category:Japanese Servants
Category:Oni
Category:Humans
Category:Chaotic Evil Servants
Category:Human Attribute Servants
Category:Mixed-Blood
Category:Heroic Spirits
Category:C+ rank Strength Servants
Category:D rank Endurance Servants
Category:A+ rank Agility Servants
Category:B rank Mana Servants
Category:B rank Luck Servants
Category:C rank Noble Phantasm Servants
Category:Introduced in 2016
Category:Voice - Natsuki Hanae
Category:Ninja