How many movies have Naomi Tani and Oniroku Dan collaborated on?

They have worked on 16 movies together! Their first movie together was Hana to hebi yori: niku no shiiku (1968) while their highest rated movie together was Oryu's Passion: Bondage Skin (1975). They have not worked together since Rope and Skin (1979). They are most known for their drama films together.