How many movies have Masami Otsuka and Yoshishige Kosako collaborated on?

They have worked on 4 movies together! Their first movie together was Doraemon: Nobita and the Island of Miracles – Animal Adventure (2012) and was their highest rated movie together. They have not worked together since Doraemon the Movie: Nobita's Sky Utopia (2023). They are most known for their animation films together.