Doku wa Seijo ni Koi wo Suru: Shinigami Koushaku Muku na Otome wo Chouai Shiteimasu

"Why are you so okay with my blood touching you...?"
Blanca, who works as a slave, meets a handsome young man named Vincent while on the run.
When Vincent's blood runs down Blanca's cheek after he is injured, he cannot hide his surprise and confusion.
No one should be able to accept their own cursed blood unscathed -
Blanca, who grew up as a slave, and Vincent, the lonely "Duke of Death." This is the story of love that these two discover for the first time.

(Source: Gentosha, translated)