Crimson in the Very Wrong Fairy Tale

Crimson has a strategy for surviving high school. Blend in. Don't cause trouble.
It works pretty well--until her sixteenth birthday when her long-lost father shows up and all hell breaks loose.
Literally.
It turns out that he is a demon king, which makes Crimson…a princess. Of Darkness.

Her castle is a sulfur-reeking cavern underground. Her Princess Training has nothing to do with tea and crumpets. Prince Charming isn't rushing in to save her. And, to top it off, she still has to go to high school.

She can't tell anyone the truth, not even her best friends. To survive, she will have to risk everything and use a cunning she didn't know she possessed. And even then there's no guarantee she or anyone she cares about will be alive tomorrow--for neither Hell nor high school comes with a manual.