How many movies have Ayano Shimizu and Ikue Otani collaborated on?

They have worked on 4 movies together! Their first movie together was Pokémon: Arceus and the Jewel of Life (2009) and was their highest rated movie together. They have not worked together since Pokémon the Movie: Volcanion and the Mechanical Marvel (2016). They are most known for their animation films together.