Yuuki Wakura

> "I want to become a hero here!"
>
> — Yuuki Wakura, Chapter 1
>
>

**Yuuki Wakura** (和(わ)倉(くら)優(ゆう)希(き), *Wakura Yūki*) is the caretaker of the Anti-Demon Corps 7th Unit and the main male protagonist of the Mato Seihei no Slave. He attended Kaminoge High School as a third-year student but after getting caught up in a **Mato Disaster**, he was rescued by Kyouka Uzen and became her Slave, granting him the power to fight alongside her.

Due to being a male, he could not become an official member of the Demon Corps since men can't receive special powers after consuming Peaches and has instead became the caretaker of the 7th unit, lending his support to his comrades both in and out of combat.

## Appearance

* Human Form
* Shuuki Form
1/2
He is a black-haired, dark brown-eyed young man of average height, with two prominent white hair strands from his center hairline, at his widow's peak. His normal physique started being developed into a more toned one, as an aftereffect of regular training and acting as the 7th Unit's caretaker. On more than one occasion, Yuuki has been described as being either handsome or adorable by multiple women in the Anti-Demon Corps.

Although, Yuuki is, in fact, human, but upon becoming Kyouka's Slave, he started assuming different forms bearing more of a resemblance to a Humanoid Shuuki, wearing a collar linked to a chain, whenever her power is activated. Since then, he has assumed different forms based on either Learning and the "Lending" of her Slave depending on the particular woman in question.

His base state, under Kyouka, Yuuki assmunes a smooth white-skinned muscular humanoid Shuuki with a horned canine-esque face, with various red tribal markings across his back, shoulders, and chest; dressed in a pair of ballooning pants common to samurai, and black leather straps on his wrists.

## Personality

From the start, Yuuki has shown to be an idealistic, generous, and attentive person, who would assist his friends and allies if either of them is in need. He has issues with the current situation of the world where men are meant to be subservient to women because all of them can attain blessings from eating the peaches from Mato, but at the same time, he continues doing his duties. He has a strong desire to become a Hero and to protect people who are in danger, which has made him more devout to Kyouka, who was able to assist him in doing that, to the point of agreeing to become the 7th Unit's Caretaker.

Since arriving at the 7th Unit, he has been somewhat socially awkward around its members, often never knowing how to interact with any of them because he has not been around many girls before. This results in him getting caught in various complicated situations and he often walks in on them while they are changing. However, he quickly started developing closer relationships with them ranging from camaraderie to friendship, which has made him less awkward around the 7th Unit members during normal situations.

Despite his reservations, Yuuki does love working as a caretaker and housekeeper, in addition to assisting the 7th Unit, which stirred from him being taught such skills from his older sister during his childhood. He is somewhat of a siscon, often stating that he wanted to marry his older sister, Aoba Wakura from childhood, and devoted himself to finding her after she disappeared some time ago.

Underneath his respectful and awkward nature, Yuuki does have latent perverted and lecherous fantasies, which is revealed in the rewards that he receives from Kyouka and his other Masters who uses her Slave powers. It seems that Yuuki himself is not aware of his own perverted desires, this can best be seen in chapter 7 of the manga, where he and Kyouka were both surprised and disturbed by Yuuki's newfound masochistic fetish.

In his Killer Fang form, Yuuki becomes extremely irrational and bloodthirsty, becoming a monster that only seeks to kill everything that stands in his way, whether friend or foe. Even Kyouka, who is normally stoic and fearless, was scared of this form and even advised canceling it instantly, noting its behavior was not anything like Yuuki. This is possibly due to Ren Yamashiro's more ruthless and inhuman personality, in contrast to the other forms, where the masters have purer wills.

## Background

Since childhood, Yuuki has grown up with his older sister, Aoba Wakura, who trained him to become a capable man (or someone to serve her in the future). She often referred to this as a video game and awarded Yuuki exceedingly high points whenever he did good jobs. Aoba also punished him whenever he did a bad job often using wrestling moves.

Six years prior to the events of the story, his sister vanished due to a "Mato Disaster" and he had not seen or heard anything from her since. Sometime later, he started to attend Kaminoge High School, a public school where he and the other male students had to clean up the halls before the female students arrived, sometimes tardy.

## Powers and Abilities

### Slave Powers

Yuuki started as a normal human with nothing more than basic abilities. As a male, he is unable to gain blessings from eating a peach. He gains different enhancements after assuming his "Slave Form" under either Kyouka, Himari, Shushu, and Nei, which releases his hidden potential, letting him defeat various powerful Shuuki.

**Slave Form** (奴(ど)隷(れい)化(か), *Dorei-ka*, lit. "Slave Transformation"): Yuuki can assume an empowered state through Kyouka's Slave power, which makes him appear more like a Shuuki and draws out his latent power. To enter this state, he must kiss her hand, after which he assumes a state that has incredible offense, defense, and speed to the point of exceeding a normal Shuuki, killing dozens of them in one attack. After entering a partial Slave Form by licking Kyouka's boots, it allowed him to kill a giant Shuuki, albeit this form wasn't as powerful and didn't last longer than the previous form. After exiting this form, he creates a smokescreen that can blind his opponents.

* **Great Cross Edge** (豪刃(ごうじん)十(じゅう)字架(じか), *Gōjin Jūjika*, lit. "Great Blade Cross"): A combination move between him and Kyouka, where Yuuki performs a powerful downward knife-hand strike, while she performs a powerful horizontal slash forming a cross-shaped slash that splits a large Shuuki apart.
* **Whirlwind** (無窮の鎖・旋風(スレイブ・つむじかぜ), *Mukyū no Kusari: Senpū*, lit. "Eternal Chain: Whirlwind"): The Slave Form, which Yuuki entered as Himari's Slave, specializing in speed rather than offense, thus letting him perform high-speed strikes such as punches and kicks in quick succession. Whirlwind also lacks the armor of his Original form, granting it little defense, but also letting him outmaneuver his foes.
	+ **Branding** (烙印破(らくいんはぶ), *Rakuin Yabu*, lit. "Stigma"): A special Whirlwind technique, where Yuuki takes advantage of his speed, stepping forward then thrusting his fist forward simultaneously, focusing his power at a single point on his opponent, causing great destruction at that point.
	+ **Skyward** (天(てん), *Ten*, lit. "Heaven"): An evolved form of the slave form Whirlwind. This form has more power, speed, and defensive abilities than its original form. It was easily capable of matching all of Homare's powers and defeat her. This form takes up more power from Yuuki than other forms and can’t be maintained for long.
* **Warcloud** (無窮の鎖(スレイブ)・戦(いくさ)雲(ぐも), *Sureibu: Ikusa Gumo*, lit. "Eternal Chain: War Cloud"): The Slave Form, which Yuuki entered after both Kyouka and Himari acted as his Masters at the same time, granting more power and speed than either his Original and Whirlwind Forms, and allowing him to decimate several enemies. This form, however, exhausts him far more than either form and he receives rewards from both Kyouka and Himari.
	+ **Howling** (咆哮撃(ほうこうげき), *Hōkō Geki*, lit. "Roar Strike"): This is a special technique, which Yuuki can use in this state, where he releases a destructive laser beam from his mouth, annihilating any Shuuki in its path. It was based around the "Branding" technique and the technique he witnessed Aoba use.
* **Sparkling Stars** (無窮の鎖(スレイブ)・煌星(きらぼし), *Sureibu: Kiraboshi*, lit. "Eternal Chain: Glowing Stars"): The Slave Form, which Yuuki entered after Nei acted as his Master, lessening both his offense and speed, but instead raising his senses to an incredible extent making him the perfect scout. Using the same concept as "Branding", he can focus his power into his senses. His sight can improve to the point of even seeing through solid objects such as clothing, and his hearing can become potent enough to hear heartbeats.
* **Boulder Melter** (無窮の鎖(スレイブ)・岩(いわ)融(とおし), *Sureibu: Iwa Tōshi*, lit. "Eternal Chain: Rock Fusion"): The Slave Form, which Yuuki entered after Shushu acted as his Master, greatly increasing his offense and defenses based on its bulky form, but his speed is equally significantly decreased. His strength increased to where he could instantly destroy boulders using a single punch. It has been noted that he couldn't use Paradigm Shift.
* **Phoenix** (無窮の鎖(スレイブ)・鳳翼(ほうよく), *Sureibu: Hōyoku*, lit. "Eternal Chain: Phoenix Wing"): The Slave Form, which Yuuki assumes after Yakumo acted as his Master, causing him to assume a more winged avian form capable of high-speed flight.
* **Killer Fang** (無窮の鎖(スレイブ)・殺(ころし)牙(きば), *Sureibu: Koroshi Kiba*, lit. "Eternal Chain: Killer Fang"): The Slave Form, which Yuuki entered after Ren acted as his Master. Kyouka stated this was a dangerous form she hadn't seen before. It is powerful enough to allow Yuuki to instantly kill several Shuuki in a single strike. Despite its offensive power, he fights in a more berserk manner and would even go against the person riding on top of him. This form can also heal damage and regenerate to a degree.
	+ **Sacrificial Goat** (贖(しょく)罪(ざい)の山羊(やぎ), *Shokuzai no Yagi*, lit. "Atonement Goat"): This is a special technique, where Yuuki causes countless symbols featuring fangs to appear above his intended targets' heads, which causes all their upper bodies to explode as if they'd all been bitten.
* **Man-Spring** (無窮の鎖(スレイブ)・肉(にく)弾(にく), *Sureibu: Nikudan*, lit. "Eternal Chain: Meat Bullet): The Slave Form, which Yuuki assumes after Fubuki Azuma, acted as his Master, causing him to assume a burlier and bulkier form, where he has elastic limbs, allowing him to build up more momentum for attacks, and makes him nigh-invulnerable when it comes to blunt attacks.
* **Roar** (無窮の鎖(スレイブ)・爆(ばく)音(おん), *Sureibu: Bakuon*, lit. "Eternal Chain: Explosive Sound): The Slave Form Yuuki assumes after Mira Kamiunten, acted as his Master, causing him to assume to form of a motorcycle with a front that resembles his basic Slave form. It has a high amount of horsepower, moving at high-speed in a short amount of time; more so through using the thrusters from its muffler, having enough power to ram through a wide number of Shuuki. In this form, Roar produces a sonic boom that Shuuki are sensitive to, forcing them out of hiding and breathing flames from its mouth, burning them.

### Physical Abilities

Although he doesn't attain enhancements from eating a peach, Yuuki has proven to be a capable combatant after becoming Kyouka's Slave and having his hidden power unlocked. He has also shown to be able to improvise and create different techniques.

**Master Combatant:** Due to the penalties and scuffles with his older sister, he learned a number of her wrestling moves, to the point of it being possible to defend himself from bullies. After becoming Kyouka's Slave, Yuuki soon became more adept in close-combat, using various martial art moves as a basis for **Branding** and short bursts of his power from his limbs in his various Slave Forms such as Whirlwind, in addition to additional training under Kyouka herself.

**Enhanced Stamina:** Due to the training under the 7th Unit leader, Yuuki has a considerable amount of stamina. He was able to keep up with Konomi Tatara on her usual patrol.

### Other Skills

**Domestic Training:** From childhood, Yuuki has been trained by his older sister, Aoba Wakura, in various mundane skills such as efficient housekeeping, cooking exceptional meals, mending clothing, and giving massages. This was noted as he took care of all the members of the 7th Unit and tended to the entire base alone perfectly. He is capable of creating various kinds of tools that assist him in doing so.

## Trivia

* His first name **Yuu** (優) means "Superiority" and **ki** (希) means "Hope", together meaning "Superior Hope".
	+ His surname **Wa** (和) means "Harmony" and **kura** (倉) means "Warehouse", together means "Harmonious Warehouse".
* His sister states that Yuuki has proposed to her many times when he was a kid.
* He oftens went for walks along the Tama Rivers with his sister.
* Yuuki seems to have a fetish for masochism, although he himself has no conscience. This may also imply that he may also have other types of strange and disturbing fetishes that he doesn't know about.
* Technically speaking, Yuuki is the only male member of the corps.
* In Chapter 84, when Yuuki receives his reward from Mira, the scene references a scene from the 1997 movie Titanic, where Rose and Jack had intercourse in a car and a hand slides off a fogged window.

## References

 Mato Seihei no Slave! Manga: Chapter 1, page 50.
 Mato Seihei no Slave! Manga: Chapter 4, page 14-17,
Yuuki enters a partial form
 Mato Seihei no Slave! Manga: Chapter 15, page 10-15,
His Slave Form releases smoke when deactivated.
 Mato Seihei no Slave! Manga: Chapter 10, page 12,
Yuuki acts as Himari's Slave.
 Mato Seihei no Slave! Manga: Chapter 10, page 13-16,
Yuuki realizes the benefits of his Whirlwind Form.
 Mato Seihei no Slave! Manga: Chapter 18, page 15-16,
Both Kyouka and Himari rides on top of Yuuki.
 Mato Seihei no Slave! Manga: Chapter 18, page 18-19,
Yuuki uses "Howling".
 Mato Seihei no Slave! Manga: Chapter 25, page 7,
Yuuki enters Sparkling Stars.
 Mato Seihei no Slave! Manga: Chapter 25, page 10-12,
Yuuki uses x-ray vision to see through solid objects.
 Mato Seihei no Slave! Manga: Chapter 25, page 13,
Yuuki hears the heartbeat of others.
 Mato Seihei no Slave! Manga: Chapter 26, page 6,
Yuuki enters Boulder Melter.
 Mato Seihei no Slave! Manga: Chapter 53, page 10,
Yuuki enters Phoenix.
 Mato Seihei no Slave! Manga: Chapter 55, page 9-11,
Yuuki enters Killer Fang.
 Mato Seihei no Slave! Manga: Chapter 55, page 14-15,
Yuuki kills countless Shuuki
 Mato Seihei no Slave! Manga: Chapter 55, page 20-21.
 Mato Seihei no Slave! Manga: Chapter 55, page 16-19.
 Mato Seihei no Slave! Manga: Chapter 24.5, page 8-11.
 Mato Seihei no Slave! Manga: Chapter 1, page 7,
Aoba trains her little brother
 Mato Seihei no Slave! Manga: Chapter 27, page 7-9,
Aoba punishes her little brother