江戸っ子奉行 天下を斬る男 (1961)

When a former artisan is tricked into putting his sister up as collateral for a loan by a gangster boss in a crooked gambling casino it sets in motion the story of Ooka Echizen, the famed magistrate of Edo during the reign of Shogun Tsuneyoshi. In a world where humans bow down to dogs and are beheaded for harming them, it's a wonder people can survive at all. Nakamura Kinnosuke is a former samurai who has left the fold to live freely and must put his life on the line to save the girl he loves, and rescue her from the yakuza who duped her brother. When the truth comes out about his background, he is forced to take on the role of Edo Magistrate, a decision that brings him unimaginable heartache and danger!