User blog comment:FairyRaven/Fairy Tail Chapter 357: The Nine Demon Gates, Review and Commentary/@comment-112.198.64.42-20131027154249/@comment-5303512-20131027163109

And have you guys ever thought Celestial Magic and Zeref's demon summon some what similar.

And totally off topic, I think the demons from Tartaros are kinda like the Arrancar's who have like a humanoid form and then their final form?