How many movies have Aoi Koga and You Taichi acted in together?

They have worked on 4 movies together! Their first movie together was Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train (2020) while their highest rated movie together was Princess Principal Crown Handler: Chapter 3 (2023). They have not worked together since Princess Principal Crown Handler: Chapter 3 (2023). They are most known for their action films together.