How many movies have Miyako Takeuchi and Ryutaro Ochiai collaborated on?

They have worked on 2 movies together! Their first movie together was Doraemon: Nobita and the Space Heroes (2015) while their highest rated movie together was Doraemon: Nobita and the Birth of Japan (2016). They have not worked together since Doraemon: Nobita and the Birth of Japan (2016).