How many movies have Tomokazu Shiratori and Yoshihiko Umakoshi collaborated on?

They have worked on 2 movies together! Their first movie together was One Piece: Baron Omatsuri and the Secret Island (2005) while their highest rated movie together was Heartcatch Precure! Movie: Fashion Show in the City of Flowers!? (2010). They have not worked together since Heartcatch Precure! Movie: Fashion Show in the City of Flowers!? (2010).