How many movies have Kyôko Tsukasa and Rena Ichinose acted in together?

They have worked on 4 movies together! Their first movie together was Terrifying Girls' High School: Women's Violent Classroom (1972) while their highest rated movie together was Terrifying Girls' High School: Delinquent Convulsion Group (1973). They have not worked together since Terrifying Girls' High School: Animal Courage (1973).