出世子守唄 (1967)

Bungo, fulfilling his duty as a yakuza, kills a man from a rival gang. Since then, he has escaped the clan's vengeance by staying on the road with his son Kenichi. Tired of running, the two settle in a mountain town. Bungo finds work as a lumberjack for the Iwasaki family and Kenichi becomes a student at the local elementary school. Regrettably, their good fortune doesn't last. The yakuza boss, Tomitaka, wants control of the town's lumber and is willing to destroy the Iwasaki to get it. Natsue, Kenichi's estranged no-good mother, returns wanting to take part in the boy's upbringing. And shortly thereafter, a mysterious stranger arrives in town to lay claim on Bungo's life...