Doraemon: Kaette Kita Doraemon (Movie)
English title: Doraemon: Doraemon Comes Back (Movie)
Japanese title: ドラえもん 帰ってきたドラえもん
Alternative titles: Come Home Doraemon
Type: Movie
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: Mar 7, 1998
Duration: 27 min
Rating: PG - Children
Studios: Shin-Ei Animation
Producers: Asatsu DK
Genres: Comedy, Fantasy
Demographics: Kids

Nobita is running from an angry Gian, though is quickly able to escape when Gian trips. Nobita asks Doraemon for a gadget to fight back, but Doraemon instead snaps at him; Doraemon tells Nobita that he must return to the 22nd century, and won’t be returning. 

(Source: Doraemon Wiki)