Hiroshi Shinanogawa is a teenager who loves reading mangas about delinquents. He wants to be bad-ass like the delinquents in his favorite comics: "Be-Bop-Highschool", "Rokudenashi BLUES," "Shonan Bakusozoku," "Crows" and "WORST." In the last summer of his middle-school life, he decides to become a delinquent. He leaves his prestigious private school and "drops out" to start leading a life as a delinquent. Now he is a member of the gang that rules Komae Kita Middle School, hiding the fact that he is an amateur at being a delinquent. He stays and fights together with Iguchi Tatsuya, a leader of a gang and a delinquent who Hiroshi aims to be like.

Shinogawa Hiroshi dropped out of school after being inspired by delinquents like Iguchi Tatsuya who live by their own rules and who speaks with his fists if anyone opposes him. He spends his days hanging out with other hoodlums, but Hiroshi is all mouth and if he gets into a fight, his ass is easily handed to him. However, this close group of friends, including Tatsuya, are there to protect him when his big mouth gets him in real trouble. However, there seems to be a storm gathering within the gangs of the city and Hiroshi and his crew might be caught in the middle of it!