How many movies have Mamoru Watanabe and Rima Aono collaborated on?

They have worked on 7 movies together! Their first movie together was Kannou Tekunikku Kuchibiru Shita Yubi (1979) while their highest rated movie together was Dokyumento poruno: Seifuku to panti (1980). They have not worked together since Kōshoku hana densha (1981).