How many movies have Kappei Yamaguchi and Tatsuya Nagamine collaborated on?

They have worked on 3 movies together! Their first movie together was One Piece: The Desert Princess and the Pirates: Adventure in Alabasta (2007) while their highest rated movie together was One Piece Film: Z (2012). They have not worked together since One Piece: Heart of Gold (2016). They are most known for their action films together.