How many movies have Keiko Ôhara and Yuki Minami acted in together?

They have worked on 6 movies together! Their first movie together was 100 Years of Torture: The History (1975) while their highest rated movie together was The Cruel History of Prisoners (1976). They have not worked together since Shin mibôjin geshuku: Iroiro oshiemasu (1977).