User blog comment:FairyRaven/Fairy Tail Chapter 401: Igneel vs. Acnologia, Review and Commentary/@comment-7418318-20140923095340

I just had a scary thought...

Maybe Acnologia is afraid of E.N.D., because that Demon would take over the Dragon's body as a host. Imagine that... a Demon infused Acnologia *shudders*