The Count's Daughter Gets a Fiance Upgrade!

After her fiance was stolen away by her younger sister, Wistaria, the daughter of a count, lost her place in the world and was offered a helping hand by Richard Tyrell, Baron of Tyrell, whom she met in the library. Wistaria had a secret crush on the intelligent and kind man and headed for his manor after accepting his proposal. However, his home was a magnificent castle that was far too luxurious for a baron. Wistaria was confused, but before she could enjoy her modest happiness, she found out he was of noble birth! His sweet caresses and thorny jealousy turned into pleasure and made her feel like she was drowning... Source: MangaPlaza