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

They have worked on 8 movies together! Their first movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008) and was their highest rated movie together. They have not worked together since Kamen Rider × Super Sentai: Ultra Super Hero Wars (2017). They are most known for their science fiction films together.