How many movies have Megumi Hayashibara and Takaya Mizutani collaborated on?

They have worked on 6 movies together! Their first movie together was Pokémon: Mewtwo Returns (2001) while their highest rated movie together was Pokémon: Arceus and the Jewel of Life (2009). They have not worked together since Pokémon: Arceus and the Jewel of Life (2009). They are most known for their fantasy films together.