How many movies have Kaneto Shiozawa and Mami Koyama acted in together?

They have worked on 13 movies together! Their first movie together was Ganbare! Bokura no Hit and Run (1979) while their highest rated movie together was The Tale of Osamu Tezuka: I'm Son-Goku (1989). They have not worked together since The Tale of Osamu Tezuka: I'm Son-Goku (1989). They are most known for their animation films together.