My Imperfect Twin (BEING RE-WRITTEN)

Slight AU- One day, Miylz finds herself in a rather unusual place, with rather unusual people; delving into the case of the rather familiar people, she learns of a past that was hidden from her a long time ago, a past she may or may not have chosen to forget. (Rating may change, OC is generally first narrator, characters from Kuroshitsuji Manga&Anime).(Not sure on pairing yet)