Graveyard of Honor (1975)

A look at the life of renegade yakuza, Rikio Ishikawa, particularly the years from 1946 to 1950 when his violent antics get him in trouble with his own clan, Kawada, and then with the clan of his protector, Kozaburo Imai. In these years, he can rely on Chieko, a young Tokyo courtesan who gives him shelter. He's banished to Osaka, where he picks up a drug habit. Through it all, he keeps his friends and enemies off balance with unpredictable behavior - and he seems indestructible. (imdb)