User blog comment:TheCarrotSaysYumYum/Fairy Tail Chapter 416 (Tartarus Arc - Last Chapter) Review/@comment-24536822-20150119145311/@comment-123.2.147.192-20150120003815

not really sure. Maybe if its destroyed, since Natsu's END, maybe Natsu will die if that book is destroyed as well. Maybe the book seals Natsu's power or someething