Sleepy Princess and the Unhelpful Mirror

Some magic school keeps sending Princess Syalis junkmail, and unfortunately, the Demon King is unable to stop their intervention. Now, she's spending half of her year in a noisy, crowded castle with the expectation of attending classes. Hogwarts better be prepared for trouble. "Harry Potter" and "Sleepy Princess in the Demon Castle" are not mine. K plus for shenanigans.