“Y-You’re kidding!” full of rage, a 15-year-old girl, Sigrid can’t help but tone up her voice out of frustration. She just found out that she wasn’t a real daughter of their family but instead, a princess of their kingdom. She only wants to be a normal lady who can live peacefully and inherit their family’s knowledge and power. But never thought about being a princess because she herself knows how hard it is to fulfill the role of being one. The problem that crossed her mind is the person that’s currently filling her place as a princess, Ariadne. They once were acquainted because of the tea party that the princess made, she adored her for how beautiful and generous her highness is. By knowing that she’s the real successor of the throne, how will she face the incoming hardships? “I, Sigrid, is the rightful owner of that throne.”