How many movies have Fujiko F. Fujio and Tsutomu Shibayama collaborated on?

They have worked on 23 movies together! Their first movie together was 21 Emon Welcome to the Space (1981) while their highest rated movie together was Doraemon: Nobita and the Galaxy Super-express (1996). They have not worked together since Doraemon: Nobita in the Wan-Nyan Spacetime Odyssey (2004). They are most known for their animation films together.