Tatsuya Iguchi was a juvenile delinquent in Tokyo and a leader a motorcycle gang. After he was released from juvenile detention, he begins to live a new life and doesn't go back to his hometown. Instead, he begins to live with his aunt in Nishi-Chiba and work at a barbecue beef restaurant. If Tatsuya gets involved in any more fights, he will be kicked out. On the first day of his release, he gets into a fight with Kaname Abe, who is second-in-command of motorcycle gang Kirihito. The motorcycle gang Kirihito is led by Atsushi Tanzawa. Tatsuya won the fight against Kaname, but they agree to keep it a secret because Tatsuya doesn't want to go back to juvenile detention and Kanamedoesn't want to people to know he got beaten. A friendship soon ensues between the two. Tatsuya also meets Chihiro Minagawa, whose brother was the leader of motorcycle gang Kirihito, but he died in a fight with another motorcycle gang. Chihiro currently works at a bowling alley. She doesn't hesitate to speak bluntly with Kirihito's leader Atsushi to stop its battles with other motorcycle gangs.