How many movies have Hiroshi Shimizu and Kiyotaka Oshiyama collaborated on?

They have worked on 7 movies together! Their first movie together was Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005) while their highest rated movie together was Doraemon: Nobita's New Dinosaur (2020). They have not worked together since Doraemon: Nobita's New Dinosaur (2020). They are most known for their animation films together.