User blog comment:IamJakuhoRaikoben/Chapter 482: Vigor, Review./@comment-4449950-20160419084318/@comment-5303512-20160419143208

Why would people either literally or jokingly still cling to a BS reason when there is little we know about Erza or her parents or anything, not that I am saying her powers come from her parents, but i have a different theory entirely.

But this back story is long over due in my opinion and with Erza defeated by Neinhart, this is now the best time more then any.