How many movies have Koji Yada and Tomoharu Katsumata collaborated on?

They have worked on 4 movies together! Their first movie together was Captain Future: The Great Race in the Solar System (1978) while their highest rated movie together was Space Pirate Captain Harlock: Arcadia of My Youth (1982). They have not worked together since Sangokushi: The Distant Land (1994). They are most known for their animation films together.