How many movies have Masami Otsuka and Sachiko Kouno collaborated on?

They have worked on 3 movies together! Their first movie together was Doraemon: Nobita's New Dinosaur (2020) and was their highest rated movie together. They have not worked together since Crayon Shinchan the Movie: The Tornado Legend of Ninja Mononoke (2022). They are most known for their animation films together.