User blog comment:IamJakuhoRaikoben/Chapter 497: The Winter Mage, Review./@comment-5303512-20160809031824/@comment-27337151-20160809063010

I don't think this is the best time for Natsu to awaken as END. I don't think it's gonna happen either. END is the most hyped thing in FT yet. It'll not happen in some fight in the middle of an arc. It'll happen in a final fight, probably with Zeref or Acnologia. Besides, for END to awaken, END's book has to be opened I assume cause Igneel told Natsu to not open it. At this point the book is with Zeref and he doesn't give a damn about Natsu., so he won't be opening it in just some fight with just some spriggan. And because Zeref's death is pretty much confirmed If END awakens, he'll only open the book as a last resort.