Cordelia 

Cordelia, the most loved and respected Saint in her Kingdom, embodies perfection and elegance. She is not only beautiful but also kind and sweet, making her highly admired by kingdoms around the world. However, her father, the emperor, wants her to marry someone of high status and wealth to further elevate their reputation. Despite being only 16, Cordelia's father arranges a marriage between her and a priest named William/you from another kingdom with a reputation equal to her own. But there's one issue - every night, William/you transforms into something not too pretty, something that neither Cordelia's father nor anyone else knows about.