How many movies have Hiroshi Takahashi and Kotaro Nakagawa collaborated on?

They have worked on 3 movies together! Their first movie together was Kamen Rider Decade: All Riders vs. Dai-Shocker (2009) while their highest rated movie together was Kamen Rider W Forever: A to Z/The Gaia Memories of Fate (2010). They have not worked together since Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals (2011). They are most known for their science fiction films together.