How many movies have Hajime Okayasu and Yuuko Satou collaborated on?

They have worked on 2 movies together! Their first movie together was Crayon Shin-chan: Pursuit of the Balls of Darkness (1997) while their highest rated movie together was Doraemon: Nobita in the Wan-Nyan Spacetime Odyssey (2004). They have not worked together since Doraemon: Nobita in the Wan-Nyan Spacetime Odyssey (2004).