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

They have worked on 4 movies together! Their first movie together was Eros Nights in Tokyo (1979) while their highest rated movie together was Female Gym Coach: Jump and Straddle (1981). They have not worked together since Itazura lolita: Ushirokara baajin (1986). They are most known for their drama films together.