User blog comment:TheCarrotSaysYumYum/Fairy Tail Chapter 416 (Tartarus Arc - Last Chapter) Review/@comment-24536822-20150119145311/@comment-4449950-20150120015826

Maybe END (as in his memories and stuff) are still in the book, but END's body (Natsu) is out. Hence why Igneel didn't want them to destroy the book (bye bye Natsu) or open it (hello END) :/ Not sure, but I'm sure we'll find out~ ;)