User blog comment:FairyRaven/Fairy Tail Chapter 363: The Stories That Demons Read, Review and Commentary/@comment-112.133.212.13-20131206131123/@comment-202.92.130.2-20131206132634

More like it is related to Acnologia. Or maybe E.N.D. is Acnologia itself. Haha. Seeing that E.N.D. was something Igneel failed to kill, IT must be something at the level of Acnologia.