How many movies have Nobuyoshi Souzaki and Shuichi Iijima 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 Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003). They have not worked together since One Piece: Curse of the Sacred Sword (2004). They are most known for their adventure films together.