How many movies have Chumei Watanabe and Kenji Ohba collaborated on?

They have worked on 3 movies together! Their first movie together was Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie (2012) 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 adventure films together.