star vs the forces of evil

A 2015 American animated series produced by Disney Television Animation. It follows Star Butterfly, a 14 year old hyperactive princess from the dimension of Mewni that gets sent to Earth dimension after setting the castle on fire with the family heirloom wand.
On Earth, she befriends Marco Diaz and lives with his family as an exchange student. Together they fight off Ludo, his monsters and, other forces of darkness that wish to use the wand for evil.

The Japanese dub is titled Devil Buster ☆ Star Butterfly (悪魔バスター☆スター・バタフライ).