User blog comment:Bluefox87/Chapter 416 Natsu is E.N.D...WHAT?!?/@comment-72.80.142.77-20150120204201

In reply to GrandChariot's comment:

We haven't heard anything new about the top 4 Saint Wizards right? Wouldn't be surprised if the grand finale involves a four-way fight between them, Zeref, Acnologia and all the guilds.

Also: I wonder if E.N.D. was the very same thing that turned whoever was killing dragons 400 years ago into Acnologia and that same fate may confront Natsu. The guild itself (or just Lucy) maybe the one thing that doesn't turn Natsu into a dragon.