How many movies have Iemasa Kayumi and Koichi Chiba acted in together?

They have worked on 3 movies together! Their first movie together was One Million-Year Trip: Bander Book (1978) while their highest rated movie together was Giant Robo: The Day the Earth Stood Still (1992). They have not worked together since Giant Robo: The Day the Earth Stood Still (1992). They are most known for their animation films together.