How many movies have Mari Tominaga and Yoshiko Nakajima collaborated on?

They have worked on 7 movies together! Their first movie together was Case Closed: The Fourteenth Target (1998) while their highest rated movie together was Detective Conan: The Phantom of Baker Street (2002). They have not worked together since Naruto Shippuden the Movie: The Lost Tower (2010). They are most known for their animation films together.