Sting Eucliffe & Rogue Cheney vs. Unnamed Dark Guild

Dragon Slayer Duo vs. Unnamed Dark Guild is a battle fought between Sabertooth Guild's Dragon Slayer Duo, Sting Eucliffe and Rogue Cheney, and members of an unnamed Dark Guild.

Prologue
At some ruins of Earth Land, Sting Eucliffe is sitting on a rock and Rogue Cheney is standing next to him. Sting mentions that the core members of Fairy Tail that had disappeared 7 years ago had returned but Rogue tells him that he is not interested. Sting tells him not to lie to him as he used to look up to Natsu Dragneel but he replies that that was a long time ago.

Battle

 *  The details of the first part of the battle are unknown 

The Dragon Slayer Duo keep talking about 7 years ago and Sting says that it makes him nostalgic. He also mentions that Rogue used to be Gajeel Redfox's apprentice, but Rogue tells him not to cling onto the past. Then, an archer appears screaming that he had found them and shoots an arrow at Rogue.

Rogue notices the arrow but doesn't act as Sting stops it by grabbing it with his hand in the air. The archer is surprised to see this and even more surprised when Sting starts eating the arrow. The archer denies it by saying that it can't be, but he is stopped midway through his sentence when Sting seemingly spits something out.

Sting releases a Dragon's Roar in the form of a tornado which destroys everything in it's path. The spell passed above the archer's shoulder without touching him, but it shocked him anyhow. The surprised archer then says that it was them, the Double Dragons of Sabertooth, and introduced them as Sting, "The White Dragon", and Rogue, "The Shadow Dragon", the Dragon Slayer Duo.

The archer starts running away trying to escape, and the Dragon Slayer Duo ask him if he is just going to abandon his comrades just like, they call him a scum and say that that's what you would expect from a Dark Guild. Behind the hill that the Duo is on, the many bodies of the other members of the Dark Guild are seen.

Aftermath
Lector and Frosh appear and say that the Sting and Rogue had overdone it. Lector calls Sting the most powerful Dragon Slayer. As the four of them walk away, Sting says that currently he would be able to defeat Natsu and invites Rogue to go with him to have a duel with Natsu, but Rogue responds that he isn't interested.