Doraemon: Nobita's Great Adventure in the World of Magic(1984)

Doraemon: Nobita no Makai Daibouken

Having dreamed of being in a world of magic, Nobita and Doraemon used the what-if-telephone-booth gadget to turn the world into one that is based on magic instead of science. Little did they know that demons exist and threaten this magical world.

(Source: Anime News Network)