What if Ciel didn't made a deal with one demon, but instead he made a deal with two demons? Expect this one demon is special...meet (Y/n) (L/n), a special demon who is also a witch, who has a contracted with ciel phantomhive along with sebastian michaelis. (Y/n) is a rare demon that has the abilities that no one has ever seen before as she is the last of her kind as a demon witch, that she had hidden herself from everybody, but everybody knows the tale of the demon witch, who brings death…