User blog comment:FairyRaven/Fairy Tail Chapter 357: The Nine Demon Gates, Review and Commentary/@comment-112.198.64.42-20131027143318/@comment-4829046-20131027153359

I do love discussing concepts with a fellow author but not here.

And shall I give a few examples of anime that had a VERY similar concept as I had?

Dog Days

Attack On Titan

The World God Only Knows

To-love-ru Darkness

Hayate no Gotoku

to name some that come to mind right now.