Doraemon: Obaachan no Omoide  

ドラえもん おばあちゃんの思い出, Doraemon: A Grandmother's Recollections

Nobita is saddened by the loss of his grandmother who passed away some years ago. To alleviate his grief, Doraemon takes Nobita back in time to visit his grandmother one last time. However, they encounter several challenges along the way, including meeting their younger selves and Nobitas mother, who does not recognize them.

The movie won the 2000 Mainichi Film Award for animation.