How many movies have Kei Hosogai and Ryoma Baba acted in together?

They have worked on 4 movies together! Their first movie together was Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie (2012) while their highest rated movie together was Tokumei Sentai Go-Busters vs. Kaizoku Sentai Gokaiger: The Movie (2013). They have not worked together since Farewell: We're a Bounty Hunter Team! (2017).