How many movies have Hideyuki Umezu and Keiko Tamaki collaborated on?

They have worked on 2 movies together! Their first movie together was Fullmetal Alchemist the Movie: The Sacred Star of Milos (2011) while their highest rated movie together was Fusé: Memoirs of a Huntress (2012). They have not worked together since Fusé: Memoirs of a Huntress (2012).