How many movies have Ryuichi Saito and Yumi Kakazu collaborated on?

They have worked on 1 movie together! Their first movie together was Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005) and was their highest rated movie together. They have not worked together since Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005).