How many movies have Terumi Nishii and Yoshihiko Umakoshi collaborated on?

They have worked on 4 movies together! Their first movie together was One Piece: Baron Omatsuri and the Secret Island (2005) while their highest rated movie together was Yes! Precure 5 Go Go! Movie: Happy Birthday in the Land of Sweets (2008). They have not worked together since Yes! Precure 5 Go Go! Movie: Happy Birthday in the Land of Sweets (2008). They are most known for their action films together.