How many movies have Chie Saito and Megumi Hayashibara collaborated on?

They have worked on 3 movies together! Their first movie together was Detective Conan: The Scarlet Bullet (2021) while their highest rated movie together was Detective Conan: Black Iron Submarine (2023). They have not worked together since Detective Conan: Black Iron Submarine (2023). They are most known for their mystery films together.