Negima!.

Vampires, robots, sorcery… And that’s all before Gym Class! Welcome to Mahora Academy, an all-girls school where the impossible and the enchanting are a part of the curriculum. It’s the start of the new school year and emotions run rampant as the girls of Class 2-A meet the newest staff addition – Negi Springfield. A ten-year-old Welsh born prodigy, Negi has more problems than he has students. As a wizard-in-training, this academic appointment is the final requirement in his quest to become a Magister Magorum. But if he messes things up and the girls find out, existence as an exotic ermine will be his fate!