User blog comment:Miskos3/Fairy Tail 534: The Door to the Vow, Review/@comment-30338537-20170428172117/@comment-7418318-20170428175158

The cheap way out would be that Zeref and Acnologia crash into each other while in the ravines of time and that causes the tunnel to collapse and trap the two in there, wiping them both out in one stroke.

I hope that won't happen.