The male protagonist baffles everyone by proposing to the antagonist rather than the protagonist, despite her enviable background of having the most influential father, the most beautiful mother, and three arrogant brothers. Seizing control of the character Ciel Valentine in the novel, who possessed unparalleled beauty, power, and wealth, the story unfolds where the protagonist is the adopted sister of Ciel. Ciel's unreciprocated love for the prince, who chose her sister, fueled her jealousy, leading to her mistreatment of the protagonist and ultimately her execution by the prince's hand. Her jealousy and harmful actions culminated in her tragic demise by beheading. The narrative revolves around the protagonist's attempt to unite her sister with the prince, only to face bewilderment when the prince unexpectedly proposes to her instead.