NegativeZero over 14 years ago The fact she has a tail and cat ears. I'm pretty sure it's supposed to be Nanako / Seven, the guardian of Ciel's Seventh Scripture.
albert over 14 years ago I doubt it. Nanako is always depicted with hooves. See for yourself: http://miezaru.donmai.us/post/list/tags/nanako+-mahorabaNekomimi Ciel + Arcueid isn't unusual at all.