User blog comment:Ncduru/The Erza-Irene Connection/@comment-24784846-20160427172729/@comment-26884672-20160427184233

My thoughts on this whole thing is if people recall Erza grew up in RoseMary Village with Simon and Kagura before they Tower of Heaven men came and killed the adults and captured children for labor and slavery, Maybe Irene and Erza are twin sister, or just sisters, but maybe the parents had a separation or divorce and one parent moved and took Irene with him/her. And the other had custody over Erza and stayed or moved to the village and since Erza was very young she might not even recall having a sister. Just a thought