How many movies have Kazuhiro Oki and Kumiko Sakamoto collaborated on?

They have worked on 6 movies together! Their first movie together was Fullmetal Alchemist the Movie: The Sacred Star of Milos (2011) while their highest rated movie together was My Hero Academia: Heroes Rising (2019). They have not worked together since Eureka: Eureka Seven Hi-Evolution (2021). They are most known for their action films together.