The Sophen country had been destroyed by the empire. The sole daughter of a count family, Leylin Efran, had to find a husband to be able to inherit her family. So she wouldn't have to suffer through loveless marriage, Leylin decided to find a husband to have a one-year contract marriage with. In the middle of her quest, a young and dashing man appeared before her. Leylin was convinced this is the right man for her, but is he truly the answer to Leylin's perilous situation?
Original Novel: https://ridibooks.com/v2/Detail?id=2008012958

Official Japanese Translation: https://piccoma.com/web/product/14746
Official Chinese Translation: https://ac.qq.com/Comic/comicInfo/id/645647
Official Indonesian Translation: https://kakaopage.co.id/content/Aku-dan-Pernikahan-Palsu/3247

From Asclepias Scans:

Park Min Gyeom is a human with a disease that makes him produce excess blood. Kim Chun Sam is a half-vampire who needs blood to live. So begins an unusual symbiotic relationship between "predator" and "prey."

Note: This series contains additional (optional) 18+ scenes.