How many movies have Osamu Abe and Toshihiko Seki collaborated on?

They have worked on 6 movies together! Their first movie together was Kamen Rider Den-O The Movie: I’m Born! (2007) while their highest rated movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008). They have not worked together since Kamen Rider × Kamen Rider W & Decade: Movie War 2010 (2009). They are most known for their adventure films together.