How many movies have Koichi Yamadera and Megumi Toyoguchi acted in together?

They have worked on 6 movies together! Their first movie together was Pokémon: The Rise of Darkrai (2007) while their highest rated movie together was Professor Layton and the Eternal Diva (2009). They have not worked together since Eureka: Eureka Seven Hi-Evolution (2021). They are most known for their animation films together.