How many movies have Hidetoshi Kageyama and Yûsuke Koike acted in together?

They have worked on 5 movies together! Their first movie together was Horu in Rabu: Kusamura no Yokujô (1979) while their highest rated movie together was Female Teacher: Dirty Afternoon (1981). They have not worked together since Rabu gēmu: Wa owaranai (1988). They are most known for their drama films together.