How many movies have Chiaki Kumakura and Yuko Okumura collaborated on?

They have worked on 3 movies together! Their first movie together was Doraemon: Nobita and the Green Giant Legend (2008) while their highest rated movie together was Doraemon: The New Record of Nobita's Spaceblazer (2009). They have not worked together since Tales of Vesperia: The First Strike (2009). They are most known for their adventure films together.