How many movies have Koji Hirachi and Shuichi Koto acted in together?

They have worked on 2 movies together! Their first movie together was Seikan zenkai onna (1986) while their highest rated movie together was Ura honban: Tōsui bideoku~īn (1987). They have not worked together since Ura honban: Tōsui bideoku~īn (1987).