User blog comment:Omega natsu2/Chapter 353: Exorcism, Predictions./@comment-49.144.74.153-20130927110206/@comment-4829046-20130927111101

I don't think there will be any more. We kinda did theorize of Demon Slaying magic many many times and we finally got it. Strange enough Mega's "Absolute Zero" was spot on with it O_o