How many movies have Susumu Nakajima and Yumi Chiba collaborated on?

They have worked on 4 movies together! Their first movie together was Doraemon: The New Record of Nobita's Spaceblazer (2009) while their highest rated movie together was Doraemon the Movie: Nobita's Earth Symphony (2024). They have not worked together since Doraemon the Movie: Nobita's Earth Symphony (2024). They are most known for their family films together.