Kyoukai no Micrina

Micrina is a cheeky witch from the world of demons who is hellbent on taking over the human world. She thought it would be a piece of cake but she arrives in the modern world to find that it has its own powerful 'magic.' She ends up staying with a high school girl named Enomoto after she gets her out of trouble but Enomoto's quirks make completing Micrina's mission more difficult. Still, the witch decides not to give up her conquest. (Source: Anime News Network)