Kai Chisaki

Original Name 治崎 廻
Romaji Name Kai Chisaki
Nicknames Overhaul
Series Boku no Hero Academia 3rd Season
Age Unknown
Weight Unknown
Height Unknown
Date of Birth Unknown
Blood Type Unknown


Kai Chisaki, also known as “Overhaul”, is a complex and deeply disturbed character in the anime series “Boku no Hero Academia 3rd Season”. He is the leader of the Eight Precepts of Death, a group of villains. Chisaki suffers from mysophobia, a fear of germs, which manifests as a dislike of physical contact and a deep hatred of oddities. He believes that everyone around him is sick and despises being touched. This intense phobia has left psychological scars on Chisaki and influences his views on genetic mutations and the use of quirks.

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During the period when individuals develop their quirks, Chisaki’s destructive and dangerous quirk known as “Overhaul” emerged. It caused him to brutally harm his own parents, leaving him alone in the world. He was then adopted by the elderly head of the Shie Hassaikai, a criminal organization. Chisaki has developed a deep resentment towards the eccentrics, blaming them for ruining his life. He has several aspirations, including returning humanity to a quirkless state, repaying the boss for saving his life, and becoming the head of the criminal underworld.


Kai Chisaki is a pale young man with a slender build. He has short, shaggy auburn hair that is parted to the right. His eyes are narrow with small golden irises. Chisaki often wears a white mask that covers the lower half of his face, which he uses to protect himself from germs and maintain a sense of control over his surroundings.


Chisaki’s quirk, “Overhaul,” gives him the power to disassemble and reassemble matter with the touch of his hands. He can break down objects and reassemble them at will. This ability allows him to dismantle obstacles, reshape the environment, and even heal injuries by rearranging biological matter. Chisaki’s quirk is incredibly powerful and versatile, making him a formidable opponent.


As the leader of the Eight Precepts of Death, Chisaki seeks to expand the influence and power of the Shie Hassaikai. He believes that by using Eri, the boss’s granddaughter, and her quirk called “Rewind,” he can achieve his ambitions. Chisaki’s ultimate goal is to eliminate quirks from society and restore a quirk-free world. Throughout the series, he clashes with the protagonist, Izuku Midoriya, and other heroes, leading to a dramatic confrontation that reveals Chisaki’s descent into darkness.

Kai Chisaki – FAQ

Who is Kai Chisaki in “Boku no Hero Academia 3rd Season”?

Kai Chisaki, also known as Overhaul, is a major antagonist in the third season of the anime series “Boku no Hero Academia” (My Hero Academia). He is the leader of the yakuza organization known as Shie Hassaikai and serves as the main antagonist of the “Shie Hassaikai Arc”.

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What is Kai Chisaki’s quirk?

Kai Chisaki’s quirk is called “Overhaul”. With this quirk, he has the ability to disassemble and reassemble everything he touches, including living organisms. He can break down objects into their component parts and rearrange them as he wishes, making him a formidable opponent.

What are Kai Chisaki’s motives?

Kai Chisaki’s main motivation is to eliminate the current hero society and restore the yakuza to its former glory. He believes that Quirks have corrupted society and wants to create a world where the Yakuza can regain their power and influence.

How does Kai Chisaki interact with the main characters?

Kai Chisaki has significant interactions with the main characters of Boku no Hero Academia. He becomes a major adversary to the protagonist, Izuku Midoriya, and his friends. Chisaki’s actions and plans directly challenge the ideals and values of the main characters, leading to intense confrontations.

What is Kai Chisaki’s role in the Shie Hassaikai arc?

In the Shie Hassaikai arc, Kai Chisaki serves as the main antagonist. He seeks to expand the Shie Hassaikai’s influence by manufacturing and distributing a dangerous drug called Trigger. Chisaki’s actions bring him into conflict with the heroes and students of U.A. High School, leading to an epic showdown.

Does Kai Chisaki have any notable alliances or subordinates?

As the leader of the Shie Hassaikai, Kai Chisaki has several notable subordinates. The most prominent of these is Hari Kurono, also known as “Chronostasis”. Kurono is fiercely loyal to Chisaki and helps him carry out his plans. In addition, Chisaki has formed an alliance with the League of Villains, a notorious group of villains.