クロエ

The Demon King's daughter, who has been imprisoned in the tower ever since he was defeated. Because of that, she is ignorant of the world, and her words and deeds are a bit childish.

By emerging on her 16th birthday, she will become a demon king who will destroy the world. Until then, she cannot be harmed by powerful magic. When she emerges, her magical power weakens, so it is said that this is the only time to subdue it.

The imprisoned tower used to be a library, so she likes reading books.