User blog comment:Miskos3/Episode 275: Fairy Tail Zerø: An Eternal Adventure, Review/@comment-4933386-20160312122606/@comment-97.104.196.55-20160312123402

I don't think Zera is an illusion but was Zera's ghost and at the end of the episode Zera is sitting on a tree watching Mavis, Yuri, Precht, and Warrod.