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.

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