How many movies have Rika Sudo and Ryôko Ema acted in together?

They have worked on 5 movies together! Their first movie together was Terrifying Girls' High School: Women's Violent Classroom (1972) while their highest rated movie together was Girl Boss: Diamond Showdown (1974). They have not worked together since Girl Boss: Diamond Showdown (1974). They are most known for their action films together.