User blog comment:Omega natsu2/Chapter 357: The Nine Demon Gates, Predictions./@comment-124.6.181.210-20131018140339

Nope, I think Zeref is not the Master of Tartarus. Better yet, I think E.N.D. is some pre-boss thing before Acnologia (If it isn't the E.N.D. itself) OR/AND THEN Zeref. Since the manga is now using pretty big plot points, I think Fairy Tail has the possibility of ending very soon, considering that Mashima may create a new series... But meh, Tenrou Island Arc. But still, I hope Mashima makes my OTPs canon before Fairy Tail ends and HAVE a pretty good ending, or ill go crazy shit.