Marvelous Melmo

Marvelous Melmo is a magical girl manga and anime by Osamu Tezuka. This series centered on Melmo, a nine-year-old girl whose mother is killed in an auto accident and has to then take care of her two younger brothers. While in Heaven, the children's mother is given one wish. Her wish is that Melmo will be allowed to grow up more quickly than usual, since their lives as children will be difficult without their parents.

From Wikipedia, licensed under CC BY-SA 4.0.