How many movies have Aya Maeda and Yoshihiko Umakoshi collaborated on?

They have worked on 3 movies together! Their first movie together was Yes! Precure 5 Go Go! Movie: Happy Birthday in the Land of Sweets (2008) while their highest rated movie together was Mushi-Shi: The Next Chapter - Drops of Bells (2015). They have not worked together since Mushi-Shi: The Next Chapter - Drops of Bells (2015). They are most known for their animation films together.