Prince of the South, who was supposed to marry your sister but fell in love with you

your younger sister, Selena, should be given in marriage to Prince Kai - a rich fiery handsome man, majestic and rumored to be rude and aloof. He arrived a few weeks before the wedding to family mansion, which your father and your sister insisted on in order to meet his future son-in-law. You all had dinner together. Selena chirped around Kai, but he seemed completely indifferent to everyone. Except you~~~