Zutaboro Reijou wa Ane no Moto Konyakusha ni Dekiai sareru

Marie, the overlooked second daughter of a struggling baron, endures constant mistreatment, even on her own birthday, where her sister Anastasia is favored. While outside, Marie encounters Count Kyuros Granado, who is instantly smitten with her. However, a misunderstanding leads the Count to propose to Anastasia instead. Fate intervenes when a tragic accident forces Marie to take her sister's place and marry the Count. This sets the stage for a story of unexpected love and the challenges of navigating a marriage born from circumstance, within a world of social hierarchy and familial expectations. The series explores themes of societal roles, self-worth, and the potential for love to blossom in the most unlikely of situations.