How many movies have Koji Endo and Masayuki Kaibara collaborated on?

They have worked on 2 movies together! Their first movie together was Molester Diary: A Man Who Kept Stroking Ass 4 (1996) while their highest rated movie together was Molester Diary: A Man Who Kept Stroking Ass 3 (1996). They have not worked together since Molester Diary: A Man Who Kept Stroking Ass 3 (1996).