Kaibutsuhime no Kyuuai

A princess named Sereniel was once admired for her beauty until a curse left her disfigured, earning her the title of “Monster Princess.” Her family abandoned her, and she was kept away from the public. The only one who showed her kindness was the knight Cassel. She stopped believing she could be loved, especially by Cassel, due to her appearance. At a party, Sereniel encounters Cassel, who has been given an aphrodisiac, and they spend the night together. A royal decree forces them to marry, and Sereniel feels guilty for what she sees as ruining his future. She asks for a divorce, but Cassel refuses, saying he does not want to be separated from her. Their relationship is marked by pain and uncertainty as they struggle with their feelings.