How many movies have Fujiko F. Fujio and Kazuaki Imai collaborated on?

They have worked on 4 movies together! Their first movie together was Doraemon: Nobita's Treasure Island (2018) while their highest rated movie together was Doraemon: Nobita's Chronicle of the Moon Exploration (2019). They have not worked together since Doraemon the Movie: Nobita's Earth Symphony (2024). They are most known for their fantasy films together.