In a run-down city riddled with poverty and gangs, survival is a daily struggle for Yuki and his best friend Tetsu. In a desperate attempt to pay for Yuki's ill brother's hospitalization, the two of them get caught trying to break into the vault of the Seidoukai-- an infamous yakuza group. However, Yuki catches the eye of the gang's young boss, Kazutaka Hyoudo, and the two of them escape imminent death after striking a deal. Hyoudo is willing...