Majokko Megu-chan

A teenage girl arrives on Earth and is taken in by Mammi Kanzaki, a former witch who abandoned her royal aspirations to marry a human. Mammi uses magic to make her husband and their two children believe the girl is their oldest sibling. Under Mammi's guidance, the girl works to manage her powers and behavior to demonstrate her suitability for a position of royal authority. This theme of personal development and preparation for a significant role remains a consistent element in the series.