How many movies have Sadatoshi Matsuzaka and Yukiko Akiyama collaborated on?

They have worked on 5 movies together! Their first movie together was Case Closed: Countdown to Heaven (2001) while their highest rated movie together was Detective Conan: The Phantom of Baker Street (2002). They have not worked together since Yowamushi Pedal: The Movie (2015). They are most known for their animation films together.