Synopsis: K.O.SEN

The focal point of this manga centers on Tobi Shima Sen, a defiant adolescent who is adjusting to the passing of his father while residing with his mother. To instill some guidance in him, she enlists him in a boxing regime over his break. Moreover, the manga incorporates three short stories: Nakkumoe in the first edition and Kick! Kouta!! and Fukuwajutsu in the second edition.