User blog comment:IamJakuhoRaikoben/Chapter 362: Natsu vs. Jackal, Review./@comment-1776824-20131129180756/@comment-5268982-20131129190143

I think that if this is the case, we'll directly see it when the 9DG members are confronted by Fairy Tail. It will probably be supposed to "shock" Erza and the viewers when the Demon she is fighting reveals herself to be Minerva.