How many movies have Naoko Matsui and Noriko Hidaka acted in together?

They have worked on 6 movies together! Their first movie together was Ranma ½: The Movie — The Battle of Nekonron: The Fight to Break the Rules! (1991) and was their highest rated movie together. They have not worked together since Detective Conan: The Story of Ai Haibara: Black Iron Mystery Train (2023). They are most known for their animation films together.