How many movies have Ikue Otani and Tsunekazu Ishihara collaborated on?

They have worked on 12 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 Detective Pikachu (2019). They are most known for their adventure films together.