How many movies have Kenji Kawai and Umanosuke Iida collaborated on?

They have worked on 9 movies together! Their first movie together was Devilman - Volume 1: The Birth (1987) while their highest rated movie together was I am Devilman, the Devil! (1991). They have not worked together since Towa no Quon 6: Eternal Quon (2011). They are most known for their animation films together.