How many movies have Koichi Yamadera and Michio Hazama acted in together?

They have worked on 4 movies together! Their first movie together was Nadia: The Secret of Blue Water - Nautilus Story III (1991) while their highest rated movie together was The Voice Makes a Miracle (2011). They have not worked together since The Voice Makes a Miracle (2011). They are most known for their animation films together.