How many movies have Hiroshi Unayama and Nobumasa Fukushima collaborated on?

They have worked on 4 movies together! Their first movie together was Rape Shot: Momoe's Lips (1979) while their highest rated movie together was Female Teacher: Twice Raped (1983). They have not worked together since Female Teacher: Twice Raped (1983). They are most known for their drama films together.