How many movies have Kayoko Nishi and Yukiko Iwai collaborated on?

They have worked on 11 movies together! Their first movie together was Detective Conan: Captured in Her Eyes (2000) 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.