User blog comment:CNBA3/FINAL END/NATSU/ZEREF THEORY!!!/@comment-25256600-20141223131348

Or The Book E.N.D is sort of Seal release on Natsu that helps him regain his memories and etherios powers and Igneel defeats Acnologia,Natsu now ETHERIOS NATSU DRAGNEEL goes berserk and gray defeats him with demon slayer magic, Natsu comes to his senses gains way more power and trains with igneel more, sniffs out Zeref and KICKS his frickin ass!