Story of a countess who loses her fiancé to a wealthy evil daughter. At a ball, where she is on her way to find a new fiancé, she is discovered by a prince with a problematic personality. — Estelle had the unusual ability to see a creature’s mana and genuine emotions. However, this is a secret from everyone. If others knew she could see emotions, they would fear and hate her. However, after losing her fiancé to a wealthy baroness, an incident occurs at a ball she is attending in search of a new fiancé, and her hidden ability is revealed to the first prince, Archlein. Not only that but in order to keep Estelle as a handy warning device, Archlein also plays the role of a forced and doting fiancée. But that’s only until the twisted prince, who knows neither love nor romance, gains a human heart and becomes obsessed with the quiet and gentle heroine.