Ester

Tita's maid. She is close to the princess, and not only takes of her, but also serves as her confidant. She is loyal, but is willing to criticize her mistakes and give her advice.
She is a bit childish, and yet a hard worker. Sometimes, her curious nature gets her into trouble.
At first, she is wary of the main character, but since she was interested in magic, she is easily manipulated by him.
When she lets her guard down, she is raped by the protagonist, and becomes a vassal to provide monsters.