Doraemon: Kaette Kita Doraemon (Movie)

(Esta sinopse está em inglês. Ajude a comunidade traduzindo!)

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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)