User blog comment:IamJakuhoRaikoben/Chapter 464: Natsu vs Zeref, Review./@comment-4829046-20151130171101

I ain't gonna lie, this chapter is uber epic even though it is essentially just a setup chapter with heavy parallel with Gray's Devil Slaying.

Also, I believe he thanked Layla because it it links to the age-old theory of her death being linked to the Dragons being sealed. It is thanks to the seals that they avoided Acnologia and Igneel was able to provide Natsu with the flame power. I still doubt Igneel's flames are anywhere near Natsu's inner demon flames, but it seems Zeref thought so at that point. Damn curious about Anna though, I mean holy crap.