Yuu Kamishiro endures constant torment from his peers and feels like he doesn't fit in anywhere, leading him to abandon school and search for acceptance on the city streets. As he explores, he realizes that his belonging may be found within a world of violence and illicit dealings. Yuu takes up boxing and focuses on perfecting a single powerful punch to defend himself, eventually earning a reputation as the feared "Thug Hunter." Despite relishing the excitement of each confrontation, Yuu grapples with the growing darkness within him. He strives to become stronger and ultimately to find his own sanctuary in the depraved world of the streets.
