User blog comment:FairyRaven/Fairy Tail Chapter 356: Tartarus arc - Prologue, Review and Commentary/@comment-7505640-20131020033003

Cobra: "I'll tell you 'one thing': -None of them (tartaros) are human -They're demons from Zeref's book -Their master's name is E.N.D. -E.N.D. is the strongest demon"

"One thing"??? XD