Massacre Gun

Original title: みな殺しの拳銃

Directed by Yasuharu Hasebe

Kuroda is a mob hitman who turns on his employers after being forced to execute his lover. Joining forces with his similarly wronged brothers, hot-headed Eiji and aspiring boxer Saburo, the trio escalate their mob retaliation to all-out turf war where no one will stop until one faction emerges victorious.