How many movies have Heihachiro Watanabe and Osamu Inoue collaborated on?

They have worked on 19 movies together! Their first movie together was Confessions of an Adolescent Wife: Shocking! (1973) while their highest rated movie together was Maruhi anaba joho: Hinba no toiki (1973). They have not worked together since The Setting Sun (1992). They are most known for their drama films together.