User blog comment:Wrath022/Chapter 516: The Truth About Enchantment, Review/@comment-5303512-20161227040743/@comment-5303512-20161227054743

@B214, unless that power came from the book itself, which is the likely case, all this never happened until Zeref pierced the book, which is same location as that tumor, which then turned out to be Demon Power, which changed his personality and form to that of the Etherious.