You and your toys are beginning to become an annoyance, Poser," panted Mordred tiredly, even as a low growl escaped her throat and she ducked under the black blade that was swung over her head.
The two fighters became a blur that even Kiba struggled to track as they disappeared in a burst of movement, Mordred only just barely avoiding Excalibur's blade with each strike. Finally, it seemed that what was left of Arthur's fragile self-control evaporated as he roared in frustration and swung his sword in a vicious downwards strike.
Mordred desperately rolled to the side as she attempted to avoid the strike but cried out in pain as the blade slammed into her armoured shoulder, denting the knight's armour from the force of the attack and sending her flying.
The Knight of Treachery's body came to a sudden stop as it hit a large metal object sticking out of the earth and Kiba's eyes widened as he saw the helmet covering the knight's face fold into her armour to reveal the tired and bloodied face of the girl beneath it. 'That's Mordred?' questioned knight in confusion.
However, the Devil's thoughts were interrupted as he saw Arthur walk over to the downed form of the knight, his sword raised for the killing blow. Seeing this Mordred quickly grabbed the metal object she had slammed into before pulling it out of the ground, already knowing that normal metal wouldn't even cause the blade to slow and yet refusing to just lay down and die.
"I have to protect them; I won't let you start another war! I WON'T LET YOU INSULT 'HIS' NAME!" shouted the Knight of Treachery, before a massive surge of power filled Mordred.
And so Excalibur fell upon the knight…only for the two fighters to be engulfed in a bright white light as a loud clang echoed around the battlefield.
It was at this moment that the others began to regain consciousness again as the brilliant white light passed over them, causing the Devils to both flinch in pain and breathe a sigh of relief as they felt the familiar massive Holy Energy wash over them, pushing back the corrupt wrongness they got from Excalibur. As the white light died down everyone, including Mordred and Arthur, had a shocked expression on their faces as they saw Caliburn radiating a massive power as it blocked Excalibur.
"What?" muttered Mordred with a soft whisper as she gazed at the sword gleaming in her hands, humming with Holy power.
Arthur just gained a furious look on his face before he snarled, "you dare to touch the Sword of Appointment! You dare use it against me!"
Mordred snapped out of her daze at his yells before she brought Caliburn up to block the blow, the twisted and pure Holy Energies clashing against each other as the Holy power being emitted from Caliburn skyrocketed. And so the two fighters were each surrounded by their respective glows, a pure white on Mordred's side and a deep darkness on Arthur's.
It was then that everyone realized why Caliburn was known as the strongest Holy Sword in existence, as the Ultimate Holy Sword matched the power being given off by Excalibur, its white glow growing even stronger by the second. For the first time a look of strain appeared on Arthur's face as he was slowly pushed back by Mordred, whom brought the blade down in a vicious two-handed overhead strike.
For the observers it had seemed that the world had turned a shade of monochrome as the twin lights spread out to encompass the entire battlefield and bathing everything in either a black or white colour. The Devils struggled to breathe from the amount of Holy power surrounding them from the two massively powerful Holy Swords.
Suddenly Mordred blinked in shock as Arthur and his blade became invisible, Caliburn passing through nothing but air as the knight brought her blade back up to a ready position. Mordred then started searching for the descendant only for her Instincts skill to scream at her at where to place her blade. Another loud clang rang out as Mordred's blade blocked a strike to her head, briefly revealing Arthur before he disappeared again.
Kiba watched as the Knight of Treachery just barely held off every assault, one of her eyes forced shut as blood ran down from the shallow cut above it. 'She's going to lose at this rate, she can't fight him if she can't see him,' he realized, struggling to resist the crushing power of the two power Holy swords as he got to his feet.
'So let's take that advantage away from him,' grinned Kiba, as a plan began forming in his mind. Taking a deep breath, the Devil reached into the last reserves of strength he had left as he activated his Sacred Gear, a demonic sword beginning to form in his mind.
Feeling the comforting weight in his hands the Devil smirked as he struggled to an empty space unnoticed by either combatant as they were too focused on the other to worry about the weakened Devil. That was until he erupted into a quick burst of speed as he made to stab the empty space only for Arthur to reveal himself standing there with a Kiba's sword held inches from his face.
"Transparency is a powerful blade, but even if it can hide you from my sight. It can't hide your heartbeat, Sword Birth really is useful isn't it?" smirked Kiba, making both Mordred and Arthur blink in surprise at the Devil.
Arthur growled as he pushed the weakened Devil away from him and raised Excalibur in order to finish off the pesky Devil, immediately Mordred forced him to stop as she closed the distance with Prana Burst and knocked the descendant away from Kiba. Again Arthur disappeared as he avoided Mordred's strike, causing the Knight of Treachery to growl in frustration.
"Swing your blade to the left now!" ordered Kiba, getting a confused frown from Mordred as she did so which turned to a feral grin as Caliburn smashed into Excalibur and sent the descendant flying.
Together Kiba and Mordred made Arthur's invisibility useless as they continued retailing against him and eventually the descendant roared in frustration as he turned to Kiba now standing with the rest of the observers at a relatively safe distance.
Excalibur in his hands then began glowing it's sickening black colour as a massive torrent of flames rushed towards Kiba and the rest of the helpless observers. Sona tried to create a shield for them but it was shattered in an instant as the black flames continued on their murderous course.
Kiba closed his eyes with a sigh as he felt the heat of the flames growing hotter and waited for the inevitable…that never came. Realizing he should be dead by now Kiba opened his eyes to see Mordred standing in front of them with Caliburn's glow brighter than ever as a massive portal formed between them and the approaching fire.
"Hey, Poser? Want to see a trick a certain troll taught me?" smirked Mordred.
Kiba's eyes widened as he saw the flames flow into the portal before it shut, the Knight of Treachery smiling as she then swung Caliburn back down and the black flames spewed forth from the portal she'd just created and rushed towards Arthur. The descendant blinked before he dived to the side to avoid his own attack that was heading towards him, only for his blade to turn into a shield as he blocked Caliburn's blow and used Rapidly to escape.
As the descendant retreated to a safe distance he frowned and stabbed his sword into the ground, a deep darkness spreading across the battlefield. Everyone but Mordred, Arthur and Le Fay gasped as the surroundings changed to that of a burning blood stained field, the smell of charred bodies filling their noses.
"What…what is this horrible place?" gasped Rias, making Le Fay frown.
"This is Camlann or what was left of it after the battle, I knew Nightmare could make illusions but nothing of this scale or detail," replied the witch.
There was silence at this declaration as everyone turned back to look at the clashing Pendragon descendants with no small amount of awe, as they realized they were watching history repeating itself. Neither Arthur or Mordred broke the silence either as the descendant kept his gaze locked on Mordred and the knight soon did the same after looking around the battlefield with weary eyes.