Minagoroshi no Kenjû plot
Ryuichi Kuroda works for the Akazawa group, and is forced by his boss to eliminate a woman he loves. Ryuichi's youngest brother, Saburo, is a promising boxer and trains at the club controlled by the Akazawa group. When he hears the news about his older brother, he rebels by threatening to move to another boxing club. For this action Saburo is punished, for which he will have to give up boxing due to mangled hands. Together with their middle brother Eiji, a hot-headed nightclub owner, the three go to war against the Akazawa group.