User blog comment:LastationLover5000/Fairy Tail 301 - In Which Hiro Has Been Reading My Things (The Dragon King)/@comment-3061966-20120928205851/@comment-3061966-20120928212236

Lovely. >_> That actually makes sense, didn't think of that. It's important to remember his transformation into a dragon was not natural but likely the work of Zeref as Arcadios (Ussop) said. So, I guess a downside could be insaitable bloodshed. Oh, Mashima throwing historical curveballs.

Who knows, could be. For now, I could run with the notion that God Slayer magic may just be Demon Slayer magic, and well I think you get the point. I'll be disappoint if Zeref turns out to be a good guy though.

Hope for the former and get the latter, don't hope too much. Like I said, all bets are off with that stuff.

Also, this chapter tells us that Dragon slayers of that time were of a whole different level. I'd say because they had extensive standby training in adulthood as opposed to Natsu, Gajeel, and Wendy only being trained when they were kids for a few years.