User blog comment:IamJakuhoRaikoben/Chapter 508: Pleasure and Agony, Review./@comment-25324252-20161031162715

"We still haven't figured out what the hell Irene meant when she said that she and Erza were the same,"

Hoe, I already told you. You see that giant ass scar on Irene's stomach? Erza is Irene's kidney.