How many movies have Kazuya Saito and Miho Hirayama collaborated on?

They have worked on 2 movies together! Their first movie together was One Piece: Giant Mecha Soldier of Karakuri Castle (2006) 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).