User blog comment:Miskos3/Fairy Tail 537: The Power of Life, Review/@comment-26184007-20170526151859/@comment-7418318-20170526154404

Considering that all the Spriggan 12 who were strong enough to win against Fairy Tail members and Zeref are now dead, I don't see how 9 full chapters could be filled without Acnologia coming back.

Whether Anna and Ichiya survived in there with Acno though is a different matter. I would expect Acno to be quite... unamused about being locked into a time/space pocket or whatever the Valley of Time is and with no one else there to vent his frustration... yeah...