How many movies have Keiji Kameyama and Noboru Sugiyama collaborated on?

They have worked on 7 movies together! Their first movie together was Origin: Spirits of the Past (2006) while their highest rated movie together was Kamen Rider Den-O & Kiva: Climax Deka (2008). They have not worked together since Kamen Rider Decade: All Riders vs. Dai-Shocker (2009). They are most known for their science fiction films together.