Sayama Kaya

Serena is a poor aristocrat who works as a seamstress for her family, who are in debt. She receives a marriage proposal from the Marquis of Harding, 30 years her senior, who offers to cover all her debts. She accepts the proposal for the sake of her family and goes to Harding's mansion, but there she meets his son, Felix, who is the object of many women's attention! It seems that the man she should marry is not the Marquis, who is 30 years older than her, but his son, Felix...! She thought he was a cold man, but for some reason he dotes on her.Original Web Novel

Duke Valerio, who is also a commander of the Royal Knights, is having a hard time finding a bride. Due to his fearsome and stern look, all of his proposals end up in rejection. Right when he is about to give up, a meeting is arranged with a daughter of an earl, called the Phantom Flower by other nobles. Despite Valerio's worries, she accepts his proposal right away. Why would the beautiful Phantom Flower choose him of all people? Could she be hiding a secret? A heart-warming love story begins! Source: MangaPlaza