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

They have worked on 5 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 Returns: Kamen Rider Eternal (2011). They have not worked together since Kamen Rider × Super Sentai × Space Sheriff: Super Hero Wars Z (2013). They are most known for their adventure films together.