How many movies have Kōyū Ohara and Shinko Jo collaborated on?

They have worked on 3 movies together! Their first movie together was Onna tengoku: Kodane moraimasu (1972) while their highest rated movie together was Joshidaisei Sex Hôteishiki: Dôsei (1973). They have not worked together since Joshidaisei Sex Hôteishiki: Dôsei (1973).