How many movies have Nobumasa Mizunoo and Shosaku Kato collaborated on?

They have worked on 4 movies together! Their first movie together was Office Lady Rope Slave (1981) while their highest rated movie together was Zoom Up: The Beaver Book Girl (1981). They have not worked together since Female Gym Coach: Jump and Straddle (1981). They are most known for their drama films together.