How many movies have Kazuya Nakai and Takahiro Imamura collaborated on?

They have worked on 2 movies together! Their first movie together was Shin Shounan Bakusouzoku Arakure Knight (1997) 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).