How many movies have Kazuya Nakai and Yuji Hakamata collaborated on?

They have worked on 3 movies together! Their first movie together was One Piece: Dead End Adventure (2003) while their highest rated movie together was One Piece: Baron Omatsuri and the Secret Island (2005). They have not worked together since One Piece: Giant Mecha Soldier of Karakuri Castle (2006). They are most known for their action films together.