(from ebookjapan):
He hates school. He spends his days fighting and gluttonously eating, and all the neighborhood kids are his henchmen! His name is Ishida Kunimatsu! One day, an old man claiming to be the headmaster of the prestigious Harris School suddenly appears to Kunimatsu, who has been misbehaving constantly, and asks him to enroll in the school. Kunimatsu reluctantly agreed to attend the school without knowing the reason why. Kunimatsu reluctantly enrolls in the school, but is met with a crowd of strong men. Kunimatsu is invited by several sports clubs and joins them all in exchange for a good lunch box....