Unfortunately, Doraemon's machine allowed the fictional monsters to come to the real world and defeated the entire human races, thus turning the future (Nobita's time) into a demon-ruled world.

Doraemon The Movie: Jadoo Mantar Aur Jahnoom, Doraemon Movie: Toofani Adventure Films Listed as Airing on Hungama TV This Week (Jul 6, 2020) Japan's Animation DVD Ranking, April 29-May 5 (May 7 ...