How many movies have Ichiro Nagai and Kinichi Ishikawa collaborated on?

They have worked on 6 movies together! Their first movie together was The Fantastic Adventures of Unico (1981) 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.