User blog comment:FairyRaven/Fairy Tail Chapter 421: Wendy and Chelia, Review and Commentary/@comment-4449950-20150224044643/@comment-5894890-20150224231715

I had a theory about Erza joining the magic council too :P... she has a strong sense of just so it would make sense, but on the other hand, I think she's probably off training somewhere/ going to cake shops, or searching for the people from the tower of heaven arc :P.