How many movies have Hisashi Ishii and Keiko Yamamoto collaborated on?

They have worked on 3 movies together! Their first movie together was Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003) and was their highest rated movie together. They have not worked together since Library War: The Wings Of Revolution (2012). They are most known for their science fiction films together.