How many movies have Koichi Sugiyama and Yoku Shioya collaborated on?

They have worked on 3 movies together! Their first movie together was Gatchaman: The Movie (1978) while their highest rated movie together was Space Runaway Ideon: Be Invoked (1982). They have not worked together since Space Runaway Ideon: Contact (1982). They are most known for their animation films together.