
Yuuki Wakura is the main male protagonist of the manga and anime series Chained Soldier. He is a former third-year student that after getting caught in a Mato Disaster, an incident where the Mato dimension opens and crosses the human world and Shuuki begin their invasion, he was rescued by Kyouka Uzen and became her Slave, granting him the power to become a Shuuki-like creature whenever he fights with her or another girl that uses him as Slave.
Appearance[]
In his human form, he is a black-haired, dark-brown eyed (blue eyed in the anime) young man of average height, with two prominent white hair strands from his center hairline, at his widow's peak. His normal physique started to develop into a more toned one.
After becaming Kyouka's Slave, he started to assume different forms bearing more of a resemblance to a Shuuki, wearing a collar linked to a chain, whenever her power is activated. Since then, he became able to transform in different forms depending on the woman who activates his Slave form.

Yuuki's Slave form
In his base Slave form, under Kyoka, Yuuki has the appearance of a smooth-white skinned muscular Shuuki-like creature 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[]
Yuuki is generally an idealistic, generous, and attentive person, who is willing to help and assist his friends and allies if either of them is in need. He loves working as a caretaker and housekeeper, in addition to assisting the 7th Unit, which stirred from his being taught such skill by his older sister, Aoba, who he deeply cares for, during his childhood.
Powers and Abilities[]
As a male, Yuuki cannot obtain unique abilities from Peaches of Mato unlike women. However, after becoming Kyouka's Slave through her Peach Blessing, he obtained the ability to transform into a Shuuki-like creature with an array of superhuman abilities such as offense, strenght, speed and agility.