How many movies have Akira Kushida and Hiroshi Sunaga collaborated on?

They have worked on 4 movies together! Their first movie together was OOO, Den-O, All Riders: Let's Go Kamen Riders (2011) while their highest rated movie together was Space Sheriff Shaider: NEXT GENERATION (2014). They have not worked together since Space Sheriff Shaider: NEXT GENERATION (2014). They are most known for their adventure films together.