How many movies have Shōichi Ikeda and Sumito Tama collaborated on?

They have worked on 9 movies together! Their first movie together was Semi-document: Zoku maruhi yobai (1975) while their highest rated movie together was Joshi daigaku maruhi report: Nikutai nyûgaku-shiki (1977). They have not worked together since Semi document: Tsubo saguri (1980).