Duel in the storm (1968)

It is the Taisho era in Japan. A man has quit the Yakuza after five years and returned to Shikoku in order to begin his life anew as a ferryman. His boss, however, became ill and the boat is taken due to unpaid debts to the local thugs. His new life has not begun well and he is determined to rebuild the shattered business. The Yakuza, however, have added the ferry business to the rest of their portfolio of local concerns.