User blog comment:Omega natsu2/Welcome Back, Frosch/@comment-4489126-20140307070023/@comment-24039250-20140307134358

Maybe END, the one who is the leader of Tartaros and the one likely commanding the other demons to activate FACE is planning to kill Zeref and knows the only way he will have a chance is with FACE being activated. Remember Zeref's word "Only one will meet me.......you (Natsu) or END"