How many movies have Nobumasa Fukushima and Yoshihiro Kawasaki collaborated on?

They have worked on 7 movies together! Their first movie together was Zoom Up: Rape Site (1979) while their highest rated movie together was Uno Koichiro no Hiraite Utsushite (1981). They have not worked together since High School Teacher: Maturing (1985). They are most known for their drama films together.