User blog comment:FairyRaven/Fairy Tail Chapter 399: Wings of Despair, Review and Commentary/@comment-4489126-20140908144026/@comment-4489126-20140908151338

It's because we already know the ending to every Erza battle~ And lol, it's most likely that Erza/Kyouka leaves the fight due to a man killing Dragon coming to the area, me think.