User blog comment:FairyRaven/Fairy Tail Chapter 424: Avatar, Review and Commentary/@comment-25111584-20150316141716

Hmmm, I don't really mind this going down the Sasuke route as long as it's done well. Actually, if the possession part is true (it most probably is), then this isn't even the Sasuke route.

On the other hand:
 * If he's infiltrating Avatar to find info and whatnot ... already done with Silver.
 * If he's possessed and gone evil ... already done with Jellal.

So I hope Mashima can actually make this look original, it definitely has the potential to be good.

Also, just saying, but many people keep calling this situation a rip-off of other mangas ... cool, maybe just read mythology then 'cause you'll find that most fantasy stories have most parts in common with a mythology here, another there and a third one from that one over there. ^^