Brutal Tales of Chivalry (1965)

After World War II, their town was a pile of rubble. Gennosuke, the second-generation boss of the Kamizu Group was upholding yakuza chivalry by keeping black-market and illegal items out of their open-air market. Taking advantage of the mess, Iwasa and his gang take hold of goods from the US military, black-market and controlled items in order to become the most powerful group in the Enko area. Iwasa has Gennosuke assassinated but before he dies, he names Shinji Terajima as his successor and makes him swear to carry on the family business and not seek revenge or use violence. Shinji tries to make his family’s marketplace a success, but with constant interruption and attacks from Iwasa’s gang, he can no longer keep his word to his former boss.