How many movies have Masayoshi Yamaoka and Tessen Nakahira acted in together?

They have worked on 5 movies together! Their first movie together was Rising Dragon: Red-Hot Iron Skin (1969) while their highest rated movie together was New Eros Schedule Book Concubine Secrets: Sexual Technique Education (1973). They have not worked together since Oryu's Passion: Bondage Skin (1975).