User blog comment:Miskos3/Fairy Tail 512: Sting, the White Shadow Dragon, Review/@comment-130.105.140.154-20161130081519/@comment-29874610-20161201140730

Well of course. When I said that that E.N.D might have created the curses, I meant the "demon side"(if he has one that is), and not Natsu himself. And yes, not too much time would have passed, however Zeref was raising Natsu for a bit, so stuff may have happened. It's also interesting to see why Zeref's curse hasn't killed the reborn Natsu, since Zeref clearly should have loved Natsu, which means the curse of contradicton would have kicked in.