How many movies have Shuichi Oshima and Toshihiko Sahashi collaborated on?

They have worked on 11 movies together! Their first movie together was Kamen Rider Hibiki The Movie: Hibiki & The Seven War Oni (2005) while their highest rated movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008). They have not worked together since Kamen Rider THE WINTER MOVIE: Gotchard & Geats Strongest Chemy★Great Gotcha Operation (2023). They are most known for their science fiction films together.