“Omae ga Kawari ni Shine” to Iwareta Watashi. Imouto no Migawari ni Reikoku na Henkyou Haku no Moto e Totsugi, Shiawase wo Teniireru

Cast aside and unloved, I toiled endlessly hoping to earn my family's affection—until my sister was ordered to marry a cruel frontier count. My father turned to me and coldly declared, "You will take her place." Yet in that bleak fate, I found unexpected happiness.