The Prism Prince: I Had Been Admired by the Allegedly Appalling Heir

Ayano has lived every day in hell after her mother died and her father remarried. Her wicked stepmother and stepsister torment her day after day. One day, her stepmother decides to marry her off to the Watari family, who's rumored son is said to be horribly disfigured. Unable to refuse, the wedding proceeds, but to her surprise, their son, Kyoichiro, he's anything but disfigured! In fact, he's as handsome as a prince! What's more, he's already head over heels in love with Ayano! This fairytale romance set in the Taisho Era is bound to get your heart racing!

(Source: MangaPlaza)