A 32-year-old prison guard. Formerly a mercenary, he is a pacifist and humble toward everyone, but because of his youthful face and slightly clumsy demeanor, he doesn't look particularly reliable. He is 170cm tall, blood type AB, and his birthday is August 12th. His hobby is watching travel shows; he prefers drinking green tea and eating hard rice crackers while watching recorded broadcasts after work. He also goes for walks often. He dislikes crustaceans like shrimp and crab. Under specific conditions, a ferocious and violent alter ego (referred to as 'Hancho') emerges. Since there is no memory sharing between the personalities, the surface personality, Yuto, has difficulty knowing what Hancho has done, which leaves him feeling confused. It is presumed that the alter ego was heavily involved in the torture of Zen. Generally, the trigger for the personality switch is Yuto being told he is a 'useless fellow,' though he also switches to Hancho in situations where he feels severe contempt. The surface personality, Yuto, does not know much about the alter ego, Hancho. While Yuto uses polite honorifics like -san or -yang for everyone including the prisoners, Hancho uses bold, rude, and informal speech. The rapping is also done by Hancho, and Yuto cannot remember what happened on stage. He earned recognition by challenging Ryoga, who previously reigned as the top dog in the prison's 'Prison Rap.'