Kenka bakuto: Jigoku no hanamichi (1969)

The story revolves around a former pickpocket. He killed a Yakuza boss who was involved in his mother's death. Following the murder he relocates to Tokyo where his father resides. He meets a man at a gambling house and renders assistance. As a result, he also meets a girl whose father happens to be a former Yakuza boss as well. A separate Yakuza group is after her father.