How many movies have Fumihiko Tachiki and Kappei Yamaguchi acted in together?

They have worked on 16 movies together! Their first movie together was Case Closed: Countdown to Heaven (2001) while their highest rated movie together was One Piece Episode of East Blue (2017). They have not worked together since Detective Conan: Black Iron Submarine (2023). They are most known for their animation films together.