User blog comment:IamJakuhoRaikoben/Chapter 388: Erza vs. Minerva, Review./@comment-68.1.178.233-20140613064913

So this is where Mashima's winning streak ends, huh?

I had a feeling it would involve Erza and Minerva somehow. Oh well, at least we can move on from that and hopefully see some craziness next week.

Also, I think that mystery person at the end is Jellal. That's my guess.