User blog comment:IamJakuhoRaikoben/Chapter 450: Alone in all the World, Review./@comment-24546844-20150831195347/@comment-1776824-20150901063017

Basically the message is that the strength of magic originates from love. The more one loves, the more powerful they are (look at Zeref, he literally loved the most), which is an underlying theme in Fairy Tail. Natsu even said it himself. They trashed everyone who ever crossed their paths because they had to. They won by believing in themselves and each other. It's not a bad concept, but it's an annoying one because of the way it's executed (you know, build up a guy to be really powerful, then have them dominate the good guy for a bit, only to lose in one powerful hit to the good guy after a little while). There are very few true back and forth fights in Fairy Tail, but at least the message Hiro is trying to convey through his series is nice.