How many movies have Manabu Shioda and Yuichi Nakazawa collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto Shippuden the Movie: The Lost Tower (2010) while their highest rated movie together was One Piece Film: GOLD (2016). They have not worked together since One Piece Film: GOLD (2016). They are most known for their animation films together.