Showdown of Men 4: Tetsu, the White Tiger (1968)

Tetsu, is a honourable and noble yakuza caught in a conflict between rival clans, and obligations each has toward their yakuza boss and brothers. A railroad line brings changing times to a community. Because Tetsu can't stand by and allow a bunch of yakuza men to molest women, it forces him to battle it out with a knife wielding rival, the unfortunate incident leads to his boss losing face and him having to leave the family to protect it. But the rival family won't stop until they destroy Tetsu who will risk life and love for his brothers.