How many movies have Michiko Nomura and Tsutomu Shibayama collaborated on?

They have worked on 22 movies together! Their first movie together was Doraemon: Nobita and the Castle of the Undersea Devil (1983) while their highest rated movie together was Doraemon: Nobita's Three Visionary Swordsmen (1994). They have not worked together since Doraemon: Nobita in the Wan-Nyan Spacetime Odyssey (2004). They are most known for their family films together.