How many movies have Megumi Hayashibara and Susumu Matsuyama collaborated on?

They have worked on 2 movies together! Their first movie together was Pokémon the Movie: Hoopa and the Clash of Ages (2015) 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).