How many movies have Kazuya Nakai and Mami Kingetsu acted in together?

They have worked on 2 movies together! Their first movie together was One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream! (2003) while their highest rated movie together was One Piece: The Desert Princess and the Pirates: Adventure in Alabasta (2007). They have not worked together since One Piece: The Desert Princess and the Pirates: Adventure in Alabasta (2007).