The Sixth S-Class Mage

Everyone in Fiore knows of Fairy Tail's S-Class Mages.
*
Erza Scarlet. Otherwise known by her alias, Titania.

Gildarts Clive. The famous Crash Mage.

Mirajane Strauss. The beautiful poster girl of Fairy Tail who used to be known as the Demon.

Laxus Dreyar. Makarov Dreyar's insanely powerful grandson.

Mystogan. The mysterious and silent Mage whose face no one has ever seen.

What they didn't know was a sixth S-Class Mage, who's name was known only to a few. Joe Rozhkov. Similar to Mystogan, not a single person knows anything about him or his origins, nor seen his face before. What will happen when Master Makarov asks him to participate in the X791 Grand Magic Games?