How many movies have Ren Osugi and Rumi Kagawa acted in together?

They have worked on 6 movies together! Their first movie together was Semi-dokyumento: Tokkun Meiki Dukuri (1981) while their highest rated movie together was Porno document: Toruko tokkyû bin (1982). They have not worked together since Humiliation! Mother and Daughter Destruction (1984).