Erza Scarlet vs. Cobra

Erza Scarlet vs. Cobra is a battle fought between Fairy Tail's S-class Mage, Erza Scarlet and Reborn Oración Seis member, Cobra.

Prologue
After thinking of a way on how to stop the Infinity Clock and save Lucy at the same time, Fairy Tail, together with Coco, runs into the Infinity Clock to defeat all the members of the Reborn Oración Seis. However, Cobra appears in their sight. Natsu Dragneel states that he will fight Cobra, but Cobra says that he has someone else he want to finish first.

Battle
Cobra then attacks Erza with his Magic, which she easily dodges. Erza prepares to fight Cobra, while the rest proceed into where Lucy is, but before Erza and Cobra could continue their fight, Sugarboy arrives to interrupt them. Annoyed by Sugarboy, Cobra attacks him with Sound Magic, making Sugarboy lose control of his own Magic. With Sugarboy gone, Cobra tells Erza to continue their fight.

Erza and Cobra continue their fight. Erza uses various weapons to attack Cobra, but none seems to work because of Cobra's Sound Wall. Cobra states that he could hear Erza's impatience at trying to defeat him, and then attacks her, sending her to the ground. Erza tells him that she could hear the voices of her friends, saying they're not gonna lose. Erza stands up and requips her Flame Empress Armor, then attacks Cobra. The battle is taken outside after their attacks destroy the wall. Erza requips into her Lightning Empress Armor and asks Cobra why he wants to make innocent people suffer the same way he did back in the Tower of Heaven. Cobra says that he doesn't care about the Real Nightmare, but states how he doesn't like losing a friend while Erza is surrounded by many. Erza tells Cobra to look at things and then attacks him, which he dodges.

Erza once again asks Cobra if spreading chaos and revenge that important to him, with Cobra replying that it is, and that he cannot face Cubellios if he can't accomplish their plans. Cobra attacks Erza and tells her that there's nothing more she can do. Cobra activates his Dragon Force then uses Poison Dragon's Roar on Erza, but Erza requips an ancient weapon said to keep evil away, nullifying the effects of Cobra's attack and surprising him. Erza then uses the weapon to attack Cobra and destroy the chains as an order at the same time.

After destroying a number of chains, Erza talks about the source of true strength, which enrages Cobra. Cobra attacks Erza, and just when he is about to kill her, he senses Cubellios somewhere and wonders. Erza then grabs her weapon and launches an attack to Cobra, defeating him.

Aftermath
Following Cobra's defeat, the seal he engraved on the Infinity Clock vanishes. While on the ground, Cobra senses someone coming and asks who it is. Kinana appears and asks him if he is the one who called her. After hearing this, Cobra recognizes Cubellios on her. Just when they started to talk to each other, Doranbolt and Lahar arrive to arrest Cobra. Kinana refuses and begins to transform, but Cobra notices this and senses Doranbolt and Lahar say that anyone who would aid with the members of the Reborn Oración Seis would be arrested too, so he decides to surrender himself peacefully. Doranbolt, Lahar and Cobra start walking away, but Cobra stops for a bit and tells Kinana that friends are good thing to have.