User blog comment:IamJakuhoRaikoben/Chapter 357: The Nine Demon Gates, Review./@comment-5288632-20131025154455/@comment-4829046-20131025164646

Actually to say they have nothing to do with each other is wrong since Zeref helped Acnologia become like that and also stating that that is speculation as well. Whether they are connected to the current plot or not is speculation by us fans.