How many movies have Hiroshi Kato and Riko Shinohara collaborated on?

They have worked on 2 movies together! Their first movie together was Blue Gender: The Warrior (2002) while their highest rated movie together was Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003). They have not worked together since Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003).