Mii is one of the "Tower Witches" who transferred to high school, Tougetsu Academy.

(Source: Witchcraft Works Fandom)

Takamiya Honoka is a regular student whose only problem seems to be that he sits next to Kagari Ayaka, the school's #1 beauty. They have never spoken to each other before and any small interaction between them immediately results in her fanclub beating him. Yet when a falling part of the school's building is about to send him to the afterlife, it's Kagari that comes to his rescue. Only... she's dressed as a witch, carrying him in her arms and floating on a broom?! Kagari tells him it is her mission to protect him and that now she can finally protect him openly rather than undercover.


There is something unusual about the Tougetsu Academy. While on the surface it may seem like just another private Japanese high school, hidden amongst its student body, though, are a few youngsters with some unique abilities. One of them is Honoka Takamiya. He may not know it yet, but inside him lurks something very powerful. And it is the job of the school’s idol, Ayaka Kagari, to protect Takamiya from anyone, or anything, wishing to capitalize on his innate abilities.
 
Dare to harm her “Princess," and watch out—you’ll get burned!
 
(Source: Kodansha USA)
 
Note: includes extra chapters from the volumes