To Survive (Black Butler Fanfic) ~Sebastian x OC~

Tori Hathaway is the daughter of a demon, Tori has a butler called Valentine, Tori and Valentine have the same contract as Sebastian and Ciel. But Tori contains a disease which isn't contagious but can kill her, it is the new disease only for demons, when Valentine finds Tori he explains everything, but it seems Tori and Sebastian are getting attached.