I recommend 'A Beautiful Wife Is Priceless: The Secret Beloved with Little Blood' to you! The male lead was the young master of the Blood World, the male supporting character was a terrifying vampire, and the female lead was the male supporting character's daughter. In order to protect his daughter, the supporting male character fell in love with the female protagonist. In the end, with the help of the female protagonist, his daughter successfully became a human. I hope you like my recommendation. Muah ~