How many movies have Katsumi Shiono and Toshihiko Sahashi collaborated on?

They have worked on 4 movies together! Their first movie together was Kamen Rider Agito: Project G4 (2001) while their highest rated movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008). They have not worked together since Kamen Rider Den-O & Kiva: Climax Deka (2008). They are most known for their science fiction films together.