User blog comment:Miskos3/Fairy Tail 534: The Door to the Vow, Review/@comment-71.120.223.31-20170428174054/@comment-21119641-20170501161541

I mean, Zeref's magical essence is dark as fuck, the book's too. She is not taking the book's place, she is taking Zeref's.

There is nothing inside, just information, lmao, get over the END thing. It's just that the essence is dark, it's toxic.