How many movies have Ikue Otani and Naoko Matsui acted in together?

They have worked on 28 movies together! Their first movie together was Case Closed: The Time Bombed Skyscraper (1997) while their highest rated movie together was Detective Conan: The Phantom of Baker Street (2002). They have not worked together since Case Closed: The Million-Dollar Pentagram (2024). They are most known for their animation films together.