How many movies have Takeshi Omura and Tatsuya Hamaguchi collaborated on?

They have worked on 4 movies together! Their first movie together was August: Scent of Eros (1972) while their highest rated movie together was Toruko saishin tekunikku: Kyuzetsu (1976). They have not worked together since Toruko saishin tekunikku: Kyuzetsu (1976).