How many movies have Koichi Yamadera and Seiji Sasaki acted in together?

They have worked on 3 movies together! Their first movie together was Pokémon Ranger and the Temple of the Sea (2006) while their highest rated movie together was Nasu: A Migratory Bird with Suitcase (2007). They have not worked together since Eureka: Eureka Seven Hi-Evolution (2021). They are most known for their animation films together.