How many movies have Koji Okumura and Shūji Kataoka collaborated on?

They have worked on 15 movies together! Their first movie together was Pink Physical Examination (1985) while their highest rated movie together was Za gyakutai: Nyotai ikedori-hen (1987). They have not worked together since Megalopolis Express Way Trial 4 (1992). They are most known for their drama films together.