How many movies have Ayumu Watanabe and Fujiko F. Fujio collaborated on?

They have worked on 7 movies together! Their first movie together was Doraemon: The Record of Nobita's Parallel Journey to the West (1988) while their highest rated movie together was Dorami-chan: Wow, The Kid Gang of Bandits / The☆Doraemons: Strange, Sweets, Strange? / Doraemon: Nobita's the Night Before a Wedding (1991). They have not worked together since Doraemon: Nobita and the Green Giant Legend (2008). They are most known for their animation films together.