How many movies have Rika Minase and Shinya Yamamoto collaborated on?

They have worked on 7 movies together! Their first movie together was Chikan ryôin chikatetsu (1975) while their highest rated movie together was The Cruel History of Prisoners (1976). They have not worked together since Mibōjin geshuku: Shitamo kashimasu yojōhan (1977).