User blog comment:IamJakuhoRaikoben/Chapter 294: Battle of the Dragon Slayers, Review./@comment-3555799-20120804002715/@comment-5366489-20120804055407

I really hope that Natsu isn't that old...I mean, it would be kinda creepy if he was the same age, or even older, than Master o.o I think that maybe because it's ANCIENT dragon slayer magic, that that's why they weren't able to go through Freed's runes. I hope so, at least. I don't want him to be like 100 years old or something like that...especially since I ship Natsu and Lucy and it would be weird if Lucy was 17 and he's around 100 years old or something like that.

Also, this is just a theory, but maybe Zeref knows about Natsu because he's somehow connected to Igneel...? Maybe Natsu is like the "chosen one," or something like that...I know it's cliche, but like I said, it's just a THEORY. So about him being the "chosen one," maybe Zeref wants him to get rid of the evil stuff? I dunno. It's just a guess :P