Eiji Nonaka Libri

Takashi Kamiyama is an average high school student who wouldn't hurt a fly. But after becoming friends with a motley crew of thugs, a gorilla and a trashcan-shaped robot, Takashi won't just learn his ABCs - he'll learn everything there is to know about being a juvenile delinquent

Summer has come to Cromarite High, and the students are joining the school sumo club.