How many movies have Eiichiro Oda and Park Ma-gang collaborated on?

They have worked on 1 movie together! Their first movie together was One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom (2008) and was their highest rated movie together. They have not worked together since One Piece: Episode of Chopper Plus: Bloom in the Winter, Miracle Cherry Blossom (2008).