Yobi, The Five-Tailed Fox (2007) on Netflix

Plot summary

Aliens are stranded on Earth a hundred years after their landing on a mountain near the home of a small white five-tailed fox. Their test flight home fails when one of them makes a mistake, and the rest tell him to leave. The runaway alien is taken in by a class taught by Kang Han-moo, who works with pupils who do not fit in at regular schools. To save him, the fox takes the form of a human girl and enrolls under the name Yobi. She befriends a boy named Geum-ee and grows attached to life among humans, while a fox hunter and a shadow detective known as Mr. Shadow follow her.