User blog comment:FairyRaven/Fairy Tail Chapter 324: The One Who Closes The Door, Review and Commentary/@comment-112.205.41.120-20130323032321/@comment-84.113.52.218-20130323074600

I thought that the demons would be brought along by Zeref. He is after all atributed to creating hundreds of demons, including Deliora and Lullaby, 400 years ago. If he's returned to his old self, he surely can create new ones, or call the surviving old ones to him.