How many movies have Genji Nakamura and Kô Matsuura collaborated on?

They have worked on 4 movies together! Their first movie together was Hentai-shiatsu-shi: Shikiyoku no kyôen (1971) and was their highest rated movie together. They have not worked together since Yobai dai-hyakka: Sakura-gai dorobô (1980).