Arthur ignored this interruption as he continued, "…all to kill Mordred Pendragon."
"What?" muttered the Knight in confusion before a sphere of pure energy slammed into her and dissolved a fraction of her armour.
Mordred quickly turned to see Rias with another black sphere forming as the rest of the observers got up from the ground, a blank expression on their faces as the Knight realized her predicament. The only one that seemed to be struggling against the power of Excalibur was Kiba, the Devil's face scrunched into an expression of concentration.
"You would bring others into our quarrel, Poser?" she snarled in fury.
Suddenly lightning shot out from Akeno's hand and rushed towards the Knight of Treachery whom disappeared in a burst of movement before slamming her fist into the Akeno's face, knocking the already weakened Devil out. Mordred then blocked a strike from Durandal with Clarent as Xenovia tried to take advantage of the opening, only for the exorcist to struggle to hold off the retaliatory strike by the Knight.
Mordred forced Xenovia away from her as she dived out of the way of another black sphere from Rias, realizing the damage the heiress could now do to her. The Knight rushed the Gremory heiress as she tried to get in close to disable the Devil, only for a line to wrap itself around her shoulder. Instantly Mordred felt her strength getting drained from this line as she turned to see Saji restraining her with his Sacred Gear.
Growling in frustration she grabbed the line and pulled, staggering Saji before the Devil was sent flying towards her, only to be clothes lined by the Knight. As Saji fell down unconscious Irina ran up to Mordred with the sword Kiba gave her turning into a Katana. Upon seeing this it seemed that the Knight of Treachery hesitated briefly before a low sigh escaped her as she slammed the flat end of Clarent into the exorcist's head, knocking another fighter out of the brawl.
"Sorry Iri," whispered the Knight softly.
Ignoring the rest of the fighters Mordred turned her attention back to the biggest threat, Rias Gremory, whom was charging yet another black sphere. This time activating Prana Burst Mordred easily closed the distance between them before any of the other fighters could react. The Gremory heiress received a chop to the back of her neck as she collapsed to the ground, only for Mordred to groan slightly as a blade of high pressure water created a narrow cut along her arm.
The Knight then sighed as Sona sent another attack at her, a blue magical circle glowing around the Sitri heiress' hand as her Queen Tsubaki rushed at Mordred with her naginata viciously stabbing at her gut. The Knight dodged with a half turn before slicing Tsubaki's naginata cleanly in two as Clarent bisected the weapon, causing the Devil to stumbled as she was grabbed by the throat and hurled into Sona.
The Queen and King of the Sitri peerage fell over in a tangle of limbs while Koneko grabbed Mordred and used her Rook enhanced strength to lift the Knight off the ground before attempting to pile drive her into the earth. Mordred only just brought her hands up to stop herself from hitting the ground head first, unfortunately leaving herself open to a powerful right hook to her unprotected face.
Mordred swayed briefly as she got to her feet and used Clarent to break apart debris that was being thrown at her by the Rook. Koneko continued trying to throw debris at the Knight but after seeing it failing she changed strategies. Mordred frowned as she saw cat ears and a tail appear on the rook before blue flames grew in her hands, the knight being forced to dodge the majority of the flames that came rushing towards her.
However, before long the Rook's blank expression began to change as she started using Senjutsu to absorb the surrounding energies flowing around them, including the corrupt Holy power of Excalibur. Koneko froze and immediately started screaming in horror as more and more of the corrupt power entered her body.
Using this as an opening Mordred smashed into the Rook and attempted to knocked her out, only for Koneko to glare up at her a familiar madness appearing in her eyes. Mordred took a step back as everyone saw the Devil's teeth become shape fangs, shadows beginning to obscure her face as more and more corrupt and malevolent energies flowed into the former Nekoshou.
"Koneko…no don't…" coughed out Kiba as the only Devil left with free will realized what was happening.
Koneko just let out a high pitch screech as she leapt towards Sona's Knight Tomoe, the Devil's apparent Senjutsu induced madness breaking whatever hold Ruler had over the former Nekoshou. The Rook crushed the bones in Tomoe's arm, the limb in question giving a loud crack before hanging limp at her side.
The next victim of the crazed Devil was Asia as the nun finally entered the combat zone, a disturbingly blank look on her face thanks to Ruler's influence, which didn't change as she was burnt by Koneko's blue flames and sent flying from one of her enhanced punches to the gut.
Mordred flinched slightly as she heard the bones in the nun's rib cage crack slightly from the blow before Asia fell to the ground, the only signs of life coming from the nun was her shallow breathing. Finally, the insane former Nekoshou turned to face Mordred again as a beastly snarl grew on her face and her body was surrounded by some kind of power as she got onto all fours like an animal. In fact, it seemed like the Devil had even grown a second tail. This one having the same sense of wrongness that Excalibur had as instead of white like the rest of her fur it was a rotted and decaying black colour.
Mordred grunted in exertion as she blocked a blow from the Devil, skidding back a few feet from the force of the attack. "So this is Senjutsu? I'll admit it's impressive," admitted the Knight of Treachery, getting another high pitched squeal in response.
Faster than most could see, Koneko feinted an uppercut before slamming a right hook into the knight's already battered looking armour, which left a dent in the magically reinforced armour. However, Koneko wasn't the only one that could be brutal as Mordred grabbed the Rook by the throat and began to squeeze.
The Knight of Treachery ignored the retaliating kicks that were sent her way, even as she felt pain erupting from each one that impacted despite the armour protecting her. But, not even the most powerful of monsters could survive without breathing and so eventually the destructive aura surrounding Koneko dispersed as the former Nekoshou was finally knocked out from a lack of oxygen. After confirm that it wasn't an act Mordred then set the body gently down on the floor, watching as the second tail vanished from Koneko's body.
With the major threats taken care of the rest of the Devils were quickly knocked out and as Mordred stood over the unconscious body of Ruruko, Xenovia suddenly appeared behind her with Durandal swinging at her chest. Mordred immediately spun around to block the blow was the earth beneath her cracked from the force of Durandal's blade meeting her own.
Suddenly Xenovia was pushed off Mordred as Kiba crashed tackled her to the ground, catching the exorcist off guard as he stabbed her with the electrified sword he'd used during his spar with Issei. Xenovia briefly cried out in pain before she was immobilized by the electricity, allowing Kiba to climb off the exorcist and turn to Mordred and Arthur. The Knight of Treachery gave the Devil a grateful nod as Kiba smiled and collapsed to the ground in pain and exhaustion, the mental strain of fighting off Ruler's influence clearly draining him beyond measure. Throughout it all Arthur had done nothing, choosing instead to watch and examine Mordred's power and ability against the Devil's and exorcists.
"You're getting sloppy Mordred, or are you just exhausted? You should have known better to enter this fight in your current state," growled Arthur as the only two fighters left still standing turned to face each other.
The masked knight panted as she grasped the sword in her hand tightly and swayed slightly on her feet, the first signs of exhaustion beginning to appear. Suddenly Excalibur changed shape as it snaked around Clarent before constricting around it, getting a surprised grunt from Mordred as the blade was wrenched from her grip by Arthur's sword. The knight could only watch as Clarent went sailing out of her hands and sent flying into the ground far away from the two fighters.
Mordred then activated Prana Burst as she rushed towards Clarent but Arthur merely matched her speed, causing the knight to stumble in surprise as she narrowly missed the sword coming into her head. "You're fast Mordred, but nothing is faster than Rapidly," growled Arthur as Excalibur in his hands briefly pulsed with a dark light.