User blog comment:Derax-Pagani/Chapter 507: Voice/@comment-4933386-20161025091536

Hmm my theory of this Erza = Irene is that it could be one of Irene's magic that she attempted to clone herself, and managed to work like 50% or something which is why Erza is more nicer than Irene, shared same traits, like hair, the ability which can scare the crap out of every Historias away. Or that she enhanced a child to look/be like her, and only managed to make like 50% of her.

I don't know the twins thing sounds like a very basic thing to put it through a story.

I'm just trying to tie her with her immense power stuff that's all.