User blog comment:Stone Roger/Natsu and Zeref have somekind of relation?/@comment-117.205.169.36-20150311170036


 * 1: Zeref isn't controlled by Acnologia. In fact it's quite the opposite. Acnologia was given the Dragon form by Zeref himself.


 * 2: Natsu Dragneel is the son of Igneel, the King of Dragons. Zeref knows who Igneel is, and hence also knows who Natsu is. Before Igneel lost the battle, Natsu was quite young. Zeref had seen the Dragon Slayer then, and as he was the son of the King, Zeref knew only Natsu could possess the power to kill him.


 * 3: In Tenrou Island Arc, Natsu meets Zeref for the first time and Zeref tells Natsu he's grown. He then realises Natsu isn't strong enough to kill him yet, and thus, he sheds tears.

And you guys already know everything about the Grand Magic Games Arc. It explains quite a lot about him. Including E.N.D.