How many movies have Tatsuya Kunimatsu and Yoshihiro Yûki collaborated on?

They have worked on 4 movies together! Their first movie together was Molester Diary: A Man Who Kept Stroking Ass 2 (1995) while their highest rated movie together was Molester Diary: A Man Who Kept Stroking Ass 3 (1996). They have not worked together since 尻を撫でまわしつづけた男 痴漢日記6 (1998).