How many movies have Eiichi Akiyama and Hidenori Fukuoka collaborated on?

They have worked on 3 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 My Hero Academia: Heroes Rising (2019). They are most known for their adventure films together.