Shinsouban Mahoutsukai to Goshujin-sama

You're the princess of a magical kingdom. Everything is based on magic, and everyone can use magic...except you!
You have been sent on a trip to the nation's foremost magical academy: now you have 25 weeks to choose a personal servant from among its students -- or else lose your status forever.

Résumé

Otome game about a princess of a magical kingdom off to choose a new personal servant from the magic academy.