Tobio Ikuse

## Tobio Ikuse

* DxD LN
* Slash/Dog LN
* Manga

### Kana

幾瀬 鳶雄いくせ とびお
 刃狗スラッシュドッグ

### Romaji

Ikuse Tobio
 Surasshu Doggu

## Profile

### Nicknames

Tobi (by Lavinia Reni)
Slash Dog
 God of the Blade
 Fallen Dog God

### Equipment & Abilities

Canis Lykaon
Scythe

## Personal Status

### Relatives

Ageha Ikuse (Grandmother) †
 Unnamed Great-Aunt
 Unnamed Parents
 Shuri Himejima (First Cousin) †
 Akeno Himejima (Second Cousin)
 Baraqiel (Cousin-In-Law)
Suzaku Himejima (Second Cousin)
 Suou Himejima (Granduncle)

### Affiliations

Three Factions (Grigori Agent)
 Nephilim Institute (Former Student)
 Slash/Dog Team (Founder/Leader)
Himejima Clan
Team D×D
 Azazel (Former VIP)
 Culinary Study Club

### Status

Alive

Tobio Ikuse is a member and a top fighter of Grigori. He is a descendant of the Himejima Clan and the current possessor of the Sacred Gear, Canis Lykaon, one of the Longinus, earning him his namasake as Slash Dog.
He is the main protagonist of Ishibumi's work SLASH/DOG and a side-protagonist of Highschool DxD. He is the leader of the Slash/Dog Team and is also a university student.

## Appearance

Tobio is a young man with short black hair and pale grey eyes.
At the start of the SlashDog LN he is a seventeen-year-old high school student at first and was primarily dressed in the school uniform of Ryoukuu High School, which also acted as his main outside throughout volume 2.

Near the end of Volume 2, after leaving his previous school and entering Grigori's Nephilim Institute, like the others, Tobio began to wear the special uniform of the institute, which act as his main battle attire.
Tobio's height is 171 cm (5 feet 7.32 inches) and weight is 59 kg (130.073 lbs.)

During the Time of the Highschool DxD LN his height is [174 cm] and his body weight is [65 kg].
In Volume 24, Issei describes him as a handsome man.
In battle, he wears a black combat suit, as well as a black coat.

## Personality

He seems to have a very quiet personality and is quite an introverted young man, preferring to fight behind the scenes as opposed to the front lines. However, he does seem to have a sense of humor, making a joke about Vali taking interest when Issei was rubbing sunscreen on Akeno.

Due to the suffering and loss of his grandmother; who was his primary caregiver and most recently his best friend Sae have taken a severe emotional toll on him. Tobio is also extremely gentle and kind as noted by Natsume and Lavinia.

Tobio cares deeply about his friends, willing to face great danger to help them as when he decided to fight Utsusemi Agency to save Sae and he risked his life to block a powerful attack from Seiryuu Kushihashi to defend Kouki.

## History

Tobio is a descendant of the Himejima Clan via his grandmother Ageha Ikuse who is an exiled member of the Himejima Clan. He was a rare instance where he activated his Longinus, Canis Lykaon and Balance Breaker from birth. Because of this, his grandmother used a Buddhist sealing ritual to seal away the Canis Lykaon.

Unfortunately, when Tobio was roughly twelve years old his grandmother died and as a result, he ended up being cared for by the family of his best friend Sae, due to his parents living and working overseas.

## Plot

* Slash/Dog
* Highschool DxD

## Volume 1

Tobio was introduced in Volume 1 of the light novels, when a few days before his school trip on a luxury liner, he had caught a severe fever leaving him unable to join, just before his childhood friend Sae Toujo left for the trip, Tobio gave Sae a good luck charm for her travels. Four days later, Tobio notices the head news where 233 of his schoolmates all disappeared in the luxury liner accident, he was shocked and in despair especially at the loss of his friend. Afterward Tobio and the few who were absent from the trip were chased by the media and questioned their input in the incident, eventually, they've all transferred to different schools to avoid the reporters. 2 months after the disappearance of his classmates, while on his way home after partings ways with a friend, Tobio accidentally encounters two of his friends that went missing in the accident, Kouta and Sae. Chasing after Sasaki, Tobio eventually catches up but to his horror finds along with a lizard-like monster who was chewing on a dog. Sasaki was seemingly devoid of emotion signals the monster to attack Tobio.

Tobio tries to fight back in desperation but to no avail and just as he's about to be killed, he was saved by the timely arrival of Natsume, who turns out to be a fellow survivor who was absent on the trip from their previous school like him. She takes him to a family restaurant to calmly explain the details, such as that all of their old classmates were taken by a group called the Utsusemi and paired each of them with a creature like Sasaki was. She then handed him an "egg" with a beating pulse and that he must take care of it for he will die without it. Natsume then suggests for them to leave and then whispers in his ear she'll come by his house later. Tobio arrived at his apartment taking everything he had experienced today, he placed the "egg" in the bathroom and went straight to bed.

Tobio woke up at around midnight, he suspects that someone was peering through his window, he checks through the window and noticed a boy with a large spider clinging to the wall of the condominium. Tobio was frightened as the boy and his beast came after him, he tries to escape while dodging shots of spider silk, however, made a lone girl with a giant frog appeared from the front exit and also attacked him. Cornered by the two, Tobio hurried to the bathroom with the Utsusemi beasts right behind him, he manages to get a hold of the "egg" but appeared to be cracked open, he panicked as the beasts tear through the door. He tried his best to fend for himself but was eventually cornered in the tub by the two beasts. As he panics, Tobio has a flashback to when his grandmother placed a seal on him when the boy came to, he noticed a blade had stretched from his shadow piercing the frog which caused the spider monster retreat. From his shadow emerges a small black puppy with a blade on its head. The frog monster, still conscious despite the hole in its face, attacks the puppy with its tongue but the puppy simply jumps out and dices the frog up with its blade. As the spider monster attempts to escape, the puppy generates blades on its back and chases after it. Tobio expresses surprise at the turnout of events after which the puppy promptly defeats the spider, leaving it alone with Tobio. It leaves Tobio, who catches up with it in the living room where he sees yet another monster and its master. He watches on as the puppy engages the monster in battle, with the latter's master giving it instructions. The monster manages to successfully take the puppy outside, leaving Tobio worried. He decides to target the master and throws a nearby pot at him. As he collapses, Tobio rushes to the balcony and sees the monster flying while holding on to the puppy. All of a sudden, the puppy transforms into a gigantic blade and impales the monster. As the blade falls and gets stuck into the roof of a building, Tobio once again remembers what his grandmother told him about the dog a long time ago. Natsume suddenly appears, telling him his power is amazing. She expresses worry and asks about his well-being, and Tobio answers in a distracted manner.

As they discuss, Tobio observes as Natsume pets the puppy who has assumed its normal appearance. She proposes that they should leave the area as the Utsusemi could attack again soon and tells him to pack some basic necessities. Tobio agrees and wonders aloud if anyone had noticed and reported the prior commotion, but Natsume clarifies that the enemies make preparations before attacking so people do not notice. She informs him that she knows of a place where they can hide safely. Tobio begins to express doubt at that but is forcefully convinced by Natsume. As they leave the house and walk down the road, they are confronted by another Utsusemi - a snake monster and it's master. Just as Tobio and Natsume glance at each other to determine their next course of action, the snake suddenly catches on fire and turns to charcoal. As Tobio expresses surprise at the turn of events, a foreign girl dressed in a cloak and pointed hat reveals herself. A perplexed Tobio watches on as she converses with Natsume, who then takes one of Tobio's bags, telling him they should hurry up to avoid other Utsusemi.

They arrive at the place Natsume earlier informed him about, an apartment in a forest. She introduces the blonde foreigner as Lavinia, an ally of theirs. As Natsume inserts a DVD into a player, Tobio asks about it and Lavinia replies that it's to explain the current situation involving him and Natsume. Tobio watches the video, recognizing many of his classmates who were supposed to be missing. Realizing it could mean Sae's safety, he begins to feel renewed hope only for it to be shattered as they are displayed as Utsusemi. Tobio asks Natsume why both of them are being targeted, and she replies that it is due to their possession of Sacred Gears. Tobio further inquires as to how she has knowledge of these things, and Natsume replies that she got the information from a certain Governor General who she had yet to meet herself, with the condition of their meeting being to give out the last egg. Tobio asks her again about the egg, and she replies that it is for the purpose of drawing out their inherent abilities and manifesting their Sacred Gears. Tobio then asks if their classmates are still alive, and Natsume smiles and answers in the positive, leaving Tobio with renewed determination. Afterward, Natsume asks him to join forces with her against the Utsusemi Agency. Tobio agrees to Natsume's delight and she tells him that they will meet up with another one of their allies, Kouki.

Waking up the next morning, Tobio recalls a memory of Kouki the last time he saw him. Suddenly hearing a voice close to him, Tobio notices a scantily clad Lavinia and becomes flustered. They briefly talk about Kouki and Tobio's Sacred Gear. Natsume suddenly walks in and notices them in a precarious position. As she chides him and Tobio frantically tries to explain, she clarifies that she is just playing around as she is familiar with Lavinia's habit of entering the bed of others in the middle of the night.

As they have breakfast prepared by Tobio, Natsume and Lavinia express their enjoyment, with the latter saying she will give some to Vaa-kun. Tobio asks about his identity and Natsume describes him as an impertinent brat that lives in the apartment. After finishing breakfast, they move to search for Kouki. On the way, Tobio is given a micro SD card for the purpose of memorizing the appearances of the Utsusemi they could end up fighting. He is then told by her to give his puppy a name. As they arrive at a deserted department store thanks to Lavinia's help, they all make use of communication crystals created by Lavinia and split up to search for Kouki.

Tobio advances and finds Kouki along with his Sacred Gear. Receiving an update from Natsume along with a request to follow after Kouki, they ascend to the second floor where they engage some Utsusemi in combat. After defeating them, Kouki asks Tobio the reason for his involvement, to which Tobio indicates his desire to help their classmates. They introduce themselves to each other and proceed to the fifth floor where they find some more Utsusemi along with a man who introduces himself as Kazuhisa Doumon and indicates his desire to capture them for his agency. As they prepare to fight against him, Tobio contacts Natsume and confirms her status. After he and Kouki defeat some of the Utsusemi, Kazuhisa summons a clay doll who proves to be too powerful for them, leading them to be defeated and pinned by the doll. Kazuhisa reminds Tobio of Sasaki and tries to impale him on the blade of Tobio's puppy. Tobio recalls his last moments with Sasaki before the "Heavenly Aloha incident", and Sasaki, still expressionless, begs for Tobio to rescue him. As Tobio becomes enraged, Kazuhisa mentions Sae and says she was calling out his name during their experiments, leading Tobio to become even more incited. Remembering Lavinia's words about Sacred Gears becoming more powerful in response to their wielder's desires, Tobio channels his emotions, leading the puppy - which he subsequently names Jin - to grow in strength and defeat the clay doll. His own power also increasing, Tobio dispatches the rest of the Utsusemi and almost defeats Kazuhisa before Hanezu Himejima interrupts and rescues him, with their escape being aided by Tobio's brief hesitation after hearing "Himejima".

Following this, Lavinia and Natsume reach the fifth floor and they all head to the meeting with the Governor-General, who goes further in-depth about the current circumstances and explains their Sacred Gears to them. After the meeting, Tobio engages in a discussion with all of them except the Governor-General and ends up collecting Kouki's phone number.

The following day, he trains Jin while Natsume watches on and converses with him. They are interrupted by the arrival of Vali Lucifer, who asks Tobio for a match and subsequently defeats him. After the match, they introduce themselves to each other. Lavinia comes to inform them that it's time for breakfast. After they enter the building, he accidentally sees Natsume and Lavinia naked when searching for Jin. After finishing breakfast they discuss investigating the families of the victims of the "Heavenly Aloha incident" and the Utsusemi Agency in relation to the Five Principal Clans, after which they decide to visit Sae's house in accordance with Natsume's intuition. Vali mentions that the Governor-General asked him not to act with them and takes his leave. After arriving at Sae's house, Natsume says they should split up while carrying communication crystals. Tobio searches one part of the interior of the house along with Lavinia. They momentarily meet up with Natsume and Kouki who searched the other part and separate again to continue investigating. Tobio and Lavinia then notice something on the second floor. Tobio summons Jin and heads into Sae's room. He then goes into the room of her parents along with Lavinia where they see Sae standing with a slightly ominous smile. Hanezu enters and introduces himself as the leader of the Utsusemi Agency. He talks about something concerning the Himejima Clan, which Tobio does not understand. He then asks Tobio to help him take down the Five Principal Clans, to which Tobio expresses his displeasure. Hanezu directs Sae to summon a large lion. As Lavinia prepared to attack Hanezu they receive information from Natsume that the house had been surrounded. Tobio tells her to escape with Kouki and surrenders himself to Hanezu along with Lavinia.

They move to the headquarters of the agency where both Tobio and Lavinia are restrained by special handcuffs. Hanezu shows them the captured relatives of the victims used to aid them in their experiments. He then takes them to an empty room and releases Tobio, telling him that they should fight. Lavinia tells Tobio that she will not directly get involved so as not to potentially instigate Sae. Tobio engages in combat with Hanezu, who overwhelms him. As Tobio strengthens his resolve, they are interrupted by Augusta, who expresses her desire to see the "Dog", and her disciple Walburga. As Augusta and Lavinia fight against each other, the latter tells Tobio to leave and go after Sae, who had left the room along with Hanezu. Tobio apologies to her and leaves.

Heading to Hanezu's location while dispatching some Utsusemi, he meets a fallen angel who introduces himself as Kokabiel, a Cadre of the fallen angel organization Grigori, and tells him of Hanezu's location. Finally reaching Hanezu's location, they proceed to fight but Tobio is once again defeated and seriously injured alongside Jin. As he sheds tears and laments his weakness, Sae suddenly regains her sense of self and strokes his head, apologizing to him. Embracing Jin, she is then pierced by the blade and collapses. Overwhelmed by despair, Tobio activates his Balance Breaker and engages the large lion in combat. After violently killing it, he proceeds to dismember Hanezu, who tells him to destroy the Five Principal Clans and decapitates him. Not stopping his rampage even after killing Hanezu, he is then brought back to normal by the combined efforts of Vali Lavinia, and the Governor-General.

Later, Tobio regains consciousness in a sickroom and notices the Governor-General, who introduces himself as Azazel and informs Tobio about his Sacred Gear being a Longinus and a variety of other things. Tobio then remembers Sae's apparent death and begins to cry, only for Sae to appear in a wheelchair. Azazel explains that her survival is as a result of the prayer beads he gave to her before the school trip. He then leaves the room for Tobio and Sae to talk with each other.

Ten days after the incident with the Utsusemi Agency, Tobio meets up with everyone and it is revealed that they would join a special school under the Grigori called Nephilim, where they have already been assigned to the 'Barakiel Class'. Lavinia then explains the reason for her cooperation with them, that being the pursuance of the Wizards of Oz.

## Volume 2

Two months later, Tobio wakes up following a nightmare, discovering Natsume in his bed. After he tries to rouse her to no avail, he attempts to move away and is startled by the voices of Kouki, Lavinia, Vali, and Sae as they approach his room. Natsume then wakes up and discovers herself in Tobio's bed, becoming embarrassed and misunderstanding the situation. As he moves closer to her to try and explain, all of the aforementioned people enter the room, creating an awkward situation.

The awkward atmosphere is sustained until breakfast where the misunderstanding is cleared up. As they discuss over breakfast, they are interrupted by the surprise arrival of Azazel, who takes them to Nephilim after eating. As all of the group reach the location of Nephilim, Vali and Lavinia do not follow them any further as they are not registered in the school. The rest of them continue, with Natsume asking if Azazel is the actual fallen angel recorded in the Bible, which he confirms to Tobio's deep fear. As they reach their destination, Azazel hands them over to Barakiel who is to be their teacher. Tobio notices Barakiel staring pointedly at him, much to his discomfort, but Barakiel apologizes and clarifies that Tobio reminded him of someone else.

Half a month later, Tobio is shown at Nephilim engaging in a discussion with Kouki after they complete a training course. As Natsume and Sae catch up with them, Barakiel tells them to get rehydrated as there's still more training to do. After this, they engage in a sparring match with Tobio and Kouki facing off against Vali as Natsume and Sae cheer them on. Vali ends up defeating both of them much to their frustration, as Tobio realizes the difference between their power.

Heading into the men's changing room to recuperate after one more loss against Vali, he is joined by Lavinia, much to his surprise. Flustered at her sensual appearance, he decides to embrace Jin to distract himself. As Lavinia changes, she asks him about his match against Vali, to which he replies that he lost. He asks about her Sacred Gear and Vali's, feeling discouraged again as he remembers the difference in their power, and Lavinia encourages him. As he thinks about his Longinus, Lavinia tells him to unify and resonate with it in body, heart, and soul. As Tobio dwells on her words and gazes at Jin, he is suddenly startled as he remembers the nightmare he had over half a month ago. Lavinia admits that she has not made progress with her own Longinus as she is afraid of it and warns Tobio to be careful as his Longinus could consume and possess him. Tobio asks her about Augusta, and Lavinia moves close to him, mentioning that she is an enemy she is trying to stop, oblivious of her exposed body being in Tobio's sight. As they remain in that position, Sae suddenly indicates her presence, making Tobio panic. Once again oblivious to the situation, Lavinia calls out to Sae, who enters and notices their position, creating an awkward atmosphere.

The following Saturday, which was a holiday for the group, they go on a trip into town where they visit a shopping district. Natsume tells Tobio to clear up the air with Sae as there is a slight awkwardness between them stemming from the changing room incident with Lavinia, to which Tobio agrees. As the girls' shop, Tobio engages in a conversation with Kouki. Having worn some clothes selected by Natsume, Lavinia asks both of them about how she looks, blushing when Tobio says she looks good.

After lunch, they go to a park downtown where they relax, with Tobio simply watching all of his friends except for Vali. As he ponders on his relationship with Sae, Lavinia joins him and tells him about the Wizards of Oz and her connection to them. They are interrupted by a bespectacled young man who suddenly appears and stares at Jin and Byakusa - Kouki's Sacred Gear. He introduces himself as Seiryuu Kushihashi, much to the surprise of most present. Natsume asks about his intentions and he replies in a vague manner, irritating Kouki who prepares to fight him. Seiryuu shows an intent to fight, and Lavinia warns them about his ability and increases their defense with magic. Tobio and Kouki engage Seiryuu, but he proves to be more than enough for them. Seiryuu then releases a squall which causes Sae to collapse, which makes Tobio become empowered with the darkness from his Longinus. As Seiryuu releases lightning at Kouki, Tobio intercepts it and forces Seiryuu back with his power. Seiryuu prepares to fully get serious, only for the fight to be interrupted by the sudden appearance of Barakiel and Vali. A girl then also appears, telling Seiryuu to stop. After talking to Seiryuu and Barakiel, she introduces herself to Tobio as Suzaku Himejima, his second cousin, and then requests for a meeting with everyone present.

Suzaku and Seiryuu take them to a large building in an office area. She explains that they are looking for the rest of the possessors of the Four Fiends, former Ryoukou High School students who the remnants of the Utsusemi Agency and the Wizards of Oz are pursuing. She then asks for an alliance with them, much to the surprise of Tobio, Sae, Kouki, and Natsume surprised. Barakiel asks if the group about their opinion, with the group agreeing with the alliance to rescue their former classmates. As they finish the meeting, Suzaku addresses Tobio who blushes as he replies, much to the amazement of Natsume and slight disappointment of Sae.

As they all resolve to rescue their classmates and prepare, Barakiel informs Tobio that they will go only on the condition that Sae follows them, to the surprise of some present. Tobio objects and the reason for her required presence is explained as the rampage Tobio went on in the incident with the Utsusemi Agency after activating his Balance Breaker. Azazel suddenly appears and further expands on it. Tobio agrees with Sae following them and tells her not to do anything rash. All of the people present then leave, with the exception of Azazel who stays behind.

As they move towards the location, Barakiel warns them about the abilities of the Abyss Team who they could end up facing. Lavinia tells them about her past, leading up to the disappearance of her master who she is now searching for. Tobio and the rest give their support and express their willingness to help her, which she happily appreciated. As they get closer to their destination, Sae notices something and raises an alarm, causing Barakiel to stop the car and investigate ahead. He finds Shigune Nanadaru, one of the possessors of the remaining Four Fiends and a former student of Ryoukou High School, causing Tobio, Sae, Natsume, and Kouki to express surprise. Shigune addresses Tobio and the others, telling them to escape. Jin notices something ahead and Tobio and the rest prepare for battle. They are confronted by a bizarre stone statue, which Tobio suddenly remembers as one of the Sacred Gears of the Abyss Team. Barakiel warns them to close their eyes and the statue releases an intense light. It is subsequently revealed that the light is capable of stealing the eyesight and causing blindness. The team pays attention to the surroundings as a man comes out and expresses the desire to render them blind. They attack him as Shigune indicates that there are two statues. Tobio and Kouki attack one and unsuccessfully try to destroy it, while Vali destroys the other. Lavinia attacks the man directly and Barakiel prepares to engage him, but he retreats. Shigune tells the team that Koga, the remaining possessor of the Four Fiends, is fighting alone at the village.

Following that, they re-enter the car and proceed to the village. As the team remain vigilant, a raccoon suddenly appears and scares Sae and Natsume into embracing Tobio, making the latter female flustered. Vali returns from the investigation Barakiel directed him to do and informs the team about the current situation. Shortly after, they feel a powerful aura which is attributed to be that of Satanael. Barakiel decides to confront him alone and gives the team further instructions. After Barakiel's departure, Tobio inquires of the location of Koga from Shigune. As they head towards the location, Tobio encourages Sae after she expresses fear.

After reaching the location, the team finally find Koga, who is surrounded by gruesome corpses. Koga acknowledges them and introduces his Sacred Gear named Blitz, noting his similarity to Tobio's Jin. Koga then asks Tobio if Jin is one of the Four Fiends, to which he replies in the negative. They then notice Augusta, who's surrounded them with Walburga and several other magicians. As Lavinia separates from the team to face Augusta alone, Walburga engages the team and releases a fireball which Jin counters after instruction from Tobio. Kouki then tells the other team members to follow Lavinia while he takes on Walburga along with Vali.

As they head towards Lavinia, Tobio and the rest of the team are suddenly transported to the location of Barakiel and Satanael by a strange mist. After Satanael introduces himself, Tobio acknowledges his interest in Sacred Gears but indicates his resolve to ensure a safe conclusion and manifests a scythe. Satanael notes that, despite his words, his weapon was releasing an ominous aura which makes Tobio anxious. Suzaku interrupts them, allowing Tobio and the rest of the team to continue towards Lavinia. However, after reaching the destination, they are unable to help Lavinia as a result of their lack of strength compared to Lavinia and Augusta. After Augusta possesses Lavinia's body, Tobio and the rest are forced to temporarily retreat.

After meeting up with the rest and updating them on the situation, the team contact Azazel who gives them advice on how to combat Augusta. Following that, the team confront Augusta and battle against her collectively, with Vali managing to defeat her ice puppet. Tobio then activates his Balance Breaker after resolving to rescue Lavinia, neutralizing Augusta's elemental attacks and then defeating her fire giant. As Augusta notices that she's cornered, she threatens to destroy Lavinia's body with her flames, causing Tobio to hesitate. However, Shigune interferes and consumes the flames with her Sacred Gear. Lycaon then attempts to consume Tobio into killing both Augusta and Lavinia, but Tobio refuses and manages to safely remove Augusta from Lavinia's body without harming her. The process causes a vertical slash on Augusta's body, through which her own flames proceed to burn her to ashes, bringing a conclusion to the battle.

Ten days later, Tobio is hospitalized as a result of his over exertion in the previous battle. Azazel visits him and updates him about the current situation with his Sacred Gear and Satanael's intention to create artificial Longinus, asking Tobio for his help in the upcoming battles. Natsume and Sae then inform them about Lavinia regaining consciousness, to which the team visit her and offer their support.

### The Heroic Oppai Dragon

Slash Dog was mentioned in Volume 11 by Azazel when he was explaining about the current Longinus and its current possessors, stating that he is on another mission.

In Volume 12, he acted as Azazel's and Sirzechs Lucifer's bodyguard when they went to the Realm of the Dead, but did not appear as he was stationed outside.

### The Legend of Oppai Dragon and his Lively Companions

He makes his official appearance in Volume 15, where Azazel sent him as a support for Issei and his friends.

In Volume 16, Tobio participated in the meeting for the formation of D×D.

He reappears in Volume 19, at the training area where he explains his relationship to Vali to Issei. Later, after the battle with the rebel exorcists, he prevents Walburga from escaping and seals away her Incinerate Anthem after she is defeated.

In Volume 20, after D×D had found the location of Agreas that contained the hideout for Qlippoth, they prepared a preemptive strike on them with Tobio joining the Occult Research Club as the main force and giving them support as they make there way through the city.

In Volume 21, during the Evil Dragon War, days after 666 was released, Tobio and Lavinia Reni joined the Vali Team to battle Qlippoth's army at the Northern Europe region. He took out a huge amount of Evil Dragons and fake Scale Mails using his **Abyss side** Balance Breaker. Just as the war concluded, Azazel and the other Mythology leaders prepare to seal Trihexa along with themselves. Azazel tells Tobio and the Vali Team to look after Vali while he's gone.

### Red Dragon Emperor of the Blazing Truth × White Dragon Emperor of the Morning Star: The True Dragon(s) of the Kuoh Academy

In Volume 22, Tobio participate in the opening ceremony of the Azazel Cup, officially joining the tournament as one of the participants.

In Volume 24, Tobio met up with Rias, Issei, Ravel and Rossweisse at his bar when he and Cao Cao called them regarding the recent incident.

Tobio and some of the Slash Dog members appeared as guards for Vali and Rias' Rating Game match. He and Jin appeared at the parking lot when one of the Grim Reapers arrived. He tells Tobio that he has no obligation to stand here since Azazel is no longer present, Tobio however retorts this as he takes his own scythe out, the Grim Reaper is surprised that the boy would go so far as to help Vali who he claims has "cursed blood", for berating Vali, Tobio began his fight with the reaper as shadows with sharp blades spread over the area. near the end of the battle, Tobio activates his Balance Breaker, cloaking himself in shadows in the form of a humanoid dog, he takes out a secondary scythe and was able to cut him down.

In Volume 25, Tobio had a secret meeting with Ajuka on a rooftop garden in the human world, it is revealed that Tobio had been moving behind the scenes for Ajuka to locate and spy on Mitsuya Kanzaki, a young man who controls two Longinus. Tobio and Ajuka were both conflicted if they should bring him over to their side since all the Longinus wielders will be needed when they come in contact with ExE, but was worried for what kind of phenomenon might happen should he come into contact with the current Two Heavenly Dragons, especially Issei with Telos Karma.

Tobio appeared after Mitsuya Kanzaki saved Gorou Hyoudou from the Grim Reapers. Tobio views him as a nemesis of Ajuka and the one who controls Innovate Clear and Telos Karma and because of this the Grigori came to view Mitsuya as a dangerous man. As things started to heat up between Tobio and Mitsuya, Gorou stepped in to stop the fight and Tobio apologize to him for his behavior.

Tobio and his Slashdog team celebrates at the Hyoudou Residence along with their rival teams. Tobio tells Issei if he gets a match, he would want to fight against Issei and Vali much to Issei’s surprise.

Tobio briefly reappeared in True Volume 1, as he was given instructions by Ajuka to investigate of the devil’s bases in the Human world and Underworld. Arriving together with Cao Cao at the Hyoudou Residence to give Issei and the others information on the location of the Greek goddess Nyx. Tobio assisted Issei and his group by destroying Nyx’s barrier, thus allowing them to enter her territory.

Tobio was mentioned by Natsume in True Volume 2, that he will be arriving to Vali’s apartment to make some noodles for him and the group.

In True Volume 3, Tobio and his team arrived to the Shinkansen platform to be escorts for Issei and the group to Kyoto and he has personal things to take care off. Tobio took part of the meeting with Suzaku Himejima and Sun Wukong in the reception hall of the giant mansion about the Five Principle Clans offering their full support to Kyoto and he tells them that Enma hasn’t joined Hades and the Rulers of Hell, leading them to believe that Hades has a plan. Tobio explains that Kyoto was chosen to make Enma mad because the Three Great Powers was made in Japan and were to make them mad as well, because the team, the Five Principal Clans, Sun Wukong, his team and the Hero Faction team will act as security. He started to explain that the Rulers of Hell have troublesome underlings and Kyoto is a important town for Japan because of the history, culture, economy and spirituality and later watched the Hero Faction apologized to Yasaka for the trouble they caused last year and she accepted their apology, but some Youkais haven’t forgiven them so she decided to entrusted them to protect the place, with Cao Cao agreeing to protect the place with body and mind, leading Tobio to smile.

Tobio and his Slash/Dog team engaged the artificial Devils at the west side of the pseudo-barrier space that resembled Urakyoto with Tobio facing Gressil while his team dealt with the remaining artificial Devils. Tobio told Gressil that he was lucky that he didn't face Cao Cao because he would have been quickly turned to dust as Tobio activated his Balance Breaker, stating that Gressil was also lucky that Issei couldn't go all out during their encounter, which allowed him to survive. Tobio asked what Gressil's goal was after he surpassed Balberith and Verrine as Tobio became disgusted by Gressil's reasons for rampaging, stating that due to the possibility of Gressil’s evil intentions reaching those precious to Tobio, he would cut Gressil before that could happen as he activated his Abyss Balance Breaker and engaged Gressil in battle. During their battle, Tobio noted that Gressil's physical ability increases each time he fights as Tobio used his darkness to disperse Gressil's attacks, taunting him that only a real Satan-class or God-class could surpass his darkness and damage Tobio. Tobio defeated Gressil after the latter let his guard down due to developing a resistance against Tobio's blades as Tobio revealed that his blade has different aura wavelengths which allowed it to bypass Gressil's Resistance as his body only remembered one of his aura wavelengths. Tobio then finished off Gressil with his scythes, stating while Gressil is similar in power to Balberith and Verrine, it takes more then raw power or demonic power to become a true Super Devil. After finishing his fight Gressil, Natsume Minagawa approached Tobio, asking if he defeated Gressil, to which Tobio stated that it ended as she stated that the rest of the Slash Dog team defeated the artificial Devils.
## Power and Abilities

**Immense Combat Skills**: Tobio is considered to be one of the Fallen Angels' top fighters, being one of the two humans capable of forcing Vali into using the Juggernaut Drive. A testament to Tobio's immense fighting power is the fact that, alongside Dulio Gesualdo; the Strongest Exorcist, Tobio was tasked to be Sirzechs' and Azazel's bodyguards when they confronted Hades, an immensely powerful God with a large legion of powerful Grim Reapers in his service. He is also capable of easily fighting many mass-produced Evil Dragons and fake Scale Mails on his own. In Volume 24, he easily overwhelmed an executive-class Grim Reaper working under Thanatos. In True Volume 3, Tobio was able to defeat Gressil, a Devil with demonic power and talent above Satan-class, with relative ease.

* **Master Scythe Wielder**: Tobio is an extremely proficient scythe wielder, as he has proven to be naturally adept in using this Weapon. After continuous training for Years he was able to fight on par with an executive-class Grim Reaper without using his Balance Breaker. After he activated his Balance Breaker he was able to vastly overwhelm him. In his evolved Balance Breaker, Tobio used a scythe to effortlessly slice apart an army of mass-produced Evil Dragons and fake Scale Mails.

**Enhanced Strength**: Do to his extremely intense training regimen at the Grigori Tobio has trained his body into perfection, making him strong enough to overpower supernatural beings such as Youkai with refined brute force without using his Sacred Gear.

**Immense Speed**: Tobio has being shown to be exceptionally fast due to his training as a warrior for Grigori, leaving the scene without even the slightest noise at times. In Volume 24, he was able to outmaneuver an executive-class Grim Reaper with ease. In True Volume 3, Tobio could defeat Gressil without being hit by any of his attacks.

**Master Magician**: Tobio has shown to have a vast understanding of magic, as seen when he was able to severe all of Walburga's magic transportation routes in a short time even when she had used tens of thousands of spells for them. Tobio can use magic communication circles and also use magic to fly with high speed and maneuverability.

**Master Tactician**: Tobio is a brilliant strategist with extraordinary tactical insight. According to Suzaku, Tobio's intuition is always correct, as shown when he correctly guessed the Grim Reapers would made their move on Koneko during Rias’ and Vali's Rating Game match.

**Stealth Expert**: Tobio has shown to be able skillfully mask his presence from people, being capable of appearing or vanishing without leaving any trace or being noticed. He was also able to keep himself hidden from Walburga as he sealed off her magic transportation escape routes without Walburga noticing.

**Flight**: During the events of Volume 24, Tobio has demonstrated the ability to stay afloat in mid-air.

## Equipment

**Canis Lykaon** (黒刃の狗神ケイネス・リュカオン, *Keinesu Ryukaon*): Tobio's Sacred Gear and main weapon of choice. Canis Lykaon is among the Thirteen Longinus and an Independent Avatar, taking form as a large black dog named "Jin". It has the ability to produce blades and shadows from its body, can transform itself into a sword, and can also move through and extend blades from any shadows, which can be spread as far as the user's sight. Tobio has mastered his Longinus to a tremendous level, to the point of being able to slice apart concepts and the very fabric of space-time. In addition, he can also make attacks on his body melt into shadows as protection as well as submerge within shadows to reappear out of others.

* **Darkness Aura** (闇のオーラ, *Yami no Ōra*)**:** Tobio is capable of using the Canis Lykaon's darkness based powers to enshroud himself in an aura of darkness which significantly enhances his physical prowess, having first manifested it to break free of Kazuhisa's Clay Golems. He could enhance his strength enough to wound Seiryuu and release dark waves that rendered him numb.

* **Night Haken** (夜陰鉤ナイト・ハーケン, *Yain Kagi*): A technique which summons a black blade from the shadows around him. He is able to generate one from even his opponent's shadows catching them off guard.

* **Scythe** (鎌, *Kama*)**:** Tobio can produce one or more scythes which he uses as his main weapons for melee combat. Tobio's immense mastery of his Sacred Gear allows his scythes to damage even the souls of his opponents. In SlashDog Volume 3, he underwent a ritual to unlock his Himejima power and became able to summon **Ame no Ohabari** (天之尾羽張あめのおは々り, *Tail-Feathers of Heaven*); which was used to kill the God of Fire; Hi-no-Kagutsuchi.Because of this his scythe can produce cursed flames colored black and crimson.

* **Night Celestial Slash Dogs** (夜天光の乱刃狗神ナイト・セレスティアル・スラッシュ・ドッグズ, *Naito Seresutiaru Surasshu Dogguzu*): Canis Lykaon's original Balance Breaker, which Tobio had already unlocked from the moment he was born. Tobio is covered in darkness and transforms into a humanoid black hound with six tails, while Jin transforms into a large, fully-grown black hound. In this form, not only does Tobio gain enhanced strength and speed, but he can also extend his shadows beyond the range of a huge building complex and create an innumerable amount of blades in them, capable of tinging the sky and earth in darkness.

* **Perfectus Tenebrae Lykaon et Fortis Densus Laelaps** (深淵なりし冥漠の獣魔、英傑であれ常夜刃の狗神ペルフェクトゥス・テネブラエ・リュカオン・エト・フォルティス・デンス・ライラプス, *Perufekutusu Tenebrae Ryukaon Eto Fortis Dens Rairapusu*): Tobio's Abyss Side Balance Breaker, which he achieved after becoming accustomed to using his Sacred Gear and polishing Night Celestial Slash Dogs to the limit. By reciting a curse-like chant, his entire body becomes covered by darkness and takes the form of a humanoid black beast. This form has forelegs, hind legs, a tail, and massive jaws that resemble a dog's. In this form, Tobio keeps his ability to sprout immense blades from his extended shadows, while the darkness in the surrounding area also forms enormous dogs with jet-black fur that attack opponents with blades carried in their mouths. These dogs can also move through shadows much like Tobio and Jin to attack the blind. The members of the Vali Team were deeply awed by Tobio's true strength in his evolved Balance Breaker state, and Vali even considers him one of the five candidates for the strongest human.

**Buddhist Beads** (仏教ビーズ, *Bukkyō Bīzu*)**:** Tobio received a Buddhist prayer beaded bracelets from his grandmother for his protection, in which he soon gifted to Sae for good luck. It was later revealed to possess a powerful one-time protection spell, which protected its wearer from a serious wound through sacrificing itself. In Volume 2, Tobio was given another version of it by Azazel, which lets him use his Balance Breaker for a period of time.

## Trivia

* His first name Tobio (鳶雄) means "Male Black Kite".
	+ His surname Ikuse (幾瀬) means "Several Rapids".
* His birthday is May 4.
* Tobio has remarkable cooking skills, being able to cook delicious meals using the simplest of ingredients, which his friends/allies adore.
* Tobio is the second Japanese human to possess a Longinus Sacred Gear.
* Canis Lykaon means "Dog Wolf". Lykaon is a transliteration of the Latin spelling "Lycaon" which is derived from the word "Lykos" which means "Wolf". The wolf part could possibly be a reference to Lycaon the king of wolves in Roman mythology and this would refer to Tobio's ability to control Jin and his multiple jet-black dogs.
* Perfectus Tenebrae Lykaon et Fortis Densus Laelaps means "Perfect Darkness Wolf and Strong Dense Hunter".
	+ Why Laelaps means "Hunter" in this case is because Laelaps is the name of a dog in Greek mythology that always caught what he hunted and so would refer to how Tobio's dogs always catch their 'prey'.
* Tobio works a part-time night shift as the bartender at the Black Dog BAR, a bar created by Azazel. In addition to this, he sometimes cooks at a restaurant in the same building on the first floor below the bar, which is on the second floor.
	+ The bar seems to have been named after Tobio himself (sharing said name with Jin).
* Tobio is listed among the strongest humans, along with Cao Cao, Arthur, Vasco, and Mitsuya.
* Tobio is the first protagonist from another Ishibumi work to appear in High School DxD, starring in SLASHDØG. The second one is Mitsuya Kanzaki, the protagonist of Ishibumi's first work, Denpachi.