How many movies have Akira Kushida and Koichi Sakamoto collaborated on?

They have worked on 5 movies together! Their first movie together was Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals (2011) while their highest rated movie together was Space Squad: Space Sheriff Gavan vs. Tokusou Sentai Dekaranger (2017). They have not worked together since Space Squad: Space Sheriff Gavan vs. Tokusou Sentai Dekaranger (2017). They are most known for their science fiction films together.