How many movies have Kunihiko Yuyama and Reiji Kasuga collaborated on?

They have worked on 2 movies together! Their first movie together was Pokémon Mystery Dungeon: Explorers of Time & Darkness (2007) while their highest rated movie together was Pokémon the Movie: I Choose You! (2017). They have not worked together since Pokémon the Movie: I Choose You! (2017).