User blog comment:BlackWizardZeref/Fairy Tail Chapter 394: Juvia vs Keith Review/@comment-24039250-20140725085100/@comment-25244540-20140725085505

Remember how Zeref said only Natsu or END could meet Zeref but not both? Zeref's clearly saying only one of the two could meet him and if Natsu became END's vessel then they'd both be meeting him.

Plus how do we even know if END needs a vessel? If he's the strongest demon I'd say its highly unlikely he'd need one.

Atleast that's my opinion.