How many movies have Nobumasa Fukushima and Nobumasa Mizunoo collaborated on?

They have worked on 14 movies together! Their first movie together was Rape Shot: Momoe's Lips (1979) while their highest rated movie together was I Love It From Behind! (1981). They have not worked together since Horny Diver: Tight Shellfish (1985). They are most known for their drama films together.