Black Butler: Book of the Nightshade Beauty

Kelly Corso was about to turn 24 years old, but she dies in the hospital after getting into a car accident. With neither family nor hope, it seems her time on earth was ending to her. But, a chance encounter began to turn the rusted wheels of fate. In her darkest hour of death, a mysterious demon appears before Kelly, telling her that she was chosen be a bride to his young lord and she couldn't turn down. This butler and his master who both seems closer to demon than human, will they bring her the light she deserves, or drown her deep into despair?