How many movies have Fujiko F. Fujio and Masako Goto collaborated on?

They have worked on 3 movies together! Their first movie together was The Monster Kid: Invitation to Monster Land (1981) while their highest rated movie together was Doraemon: Nobita and the Castle of the Undersea Devil (1983). They have not worked together since Doraemon: Nobita and the Castle of the Undersea Devil (1983). They are most known for their animation films together.