How many movies have Masahiro Yoshihara and Nobumasa Mizunoo collaborated on?

They have worked on 5 movies together! Their first movie together was Young Beast: Secret Pleasures (1978) while their highest rated movie together was I Love It From Behind! (1981). They have not worked together since Female Gym Coach: Jump and Straddle (1981). They are most known for their drama films together.