User blog comment:Stone Roger/Natsu and Zeref have somekind of relation?/@comment-104.35.115.52-20141229053511

Zeref is 400+ years old and Igneel is 400+ I think once upon a time they faught and either Igneel won or tied with Zeref That is why Zeref is cinvinced Natsu is the only wizard who can kill him. He must know that Natsu was raised by Igneel so he thinks Natsu will one day possess the same power as Igneel the only power ever to rival his own. This also explains Natsu's scarf turning black when Zeref attacked him since Igneel gave natsu the scarf. Igneel, loving Natsu gave him the scarf to protect him from Zeref until Natsu can one day beat Zeref. Also Zeref was the one who turned a dragon slayer into acnologia so Zeref is obviously stronger meaning acnologia cannot control zeref