How many movies have Katsuhiko Sasaki and Michiko Ikeda collaborated on?

They have worked on 5 movies together! Their first movie together was Shiosai (1971) while their highest rated movie together was Godzilla vs. Biollante (1989). They have not worked together since Godzilla vs. King Ghidorah (1991). They are most known for their science fiction films together.