Thanks for the invitation. I'm in Type-Moon, inheriting the legacy of Zi-O.

Giant artificial life forms, numerous automatons, and all sorts of... Chaos mechanical soldiers that Nian Zhuo and the others thought had disappeared.

They crowded together, making the small area so dense that it was almost impenetrable. The red light flashing in their eyes and the chaotic magic emanating from their bodies made Nian Zhuo feel that the opponent would not be an easy opponent to defeat.

Even... Nian Zhuo's gaze was focused on them, shrouded in a light mist.

"I guess... those guys were also strengthened by the activated magic mist released by Tesla..." Nian Zhuo looked away after just one glance, surveying the graying sky.

"Phew, it's good that we made it in time." Mary's communication was turned on, and you could clearly hear the other person's relief. Mary crossed her arms and looked at the red dot slowly moving forward on the screen. "Although you may not believe it, that guy... Tesla is moving on foot, so he hasn't gone very far yet. If he had used the full speed of a Servant, the magic fog would have expanded long ago, and the world would be finished."

“Hmm…maybe, from this perspective, he is still helping us?” Mary said, shaking her head after making a statement that even she found somewhat amusing.

“…Alright, you guys head towards Jekyll’s apartment first! His reaction is over there!” Without saying anything more, Mary told Nianzhuo and the others Tesla’s location, and the group ran quickly in the direction Tesla had left.

With their speed fully utilized, Mashu and the others quickly caught up with the slowly advancing Tesla.

"...The moving object is right ahead!" Mary zoomed in on the screen, and the familiar man's back quickly appeared. "Ah, it really is not far ahead! I can see him! But... this speed, could it be interpreted as him being mentally aligned with us even though his movements are restricted...? No, I don't know. But a battle between you two is inevitable! He will definitely retaliate against those who prevent him from completing his mission!"

“Understood.” Mashu nodded, stepped forward with her shield in hand. “—Mr. Nianzhuo, Master, the figure in front of us has been confirmed as Nikola Tesla!”

"...Hmph." Hearing the chaotic footsteps behind him, the man in the woolen vest turned around with a smile, his gaze sweeping over each of their faces. "So you've finally arrived, brave warriors of hope for the future!"

During this walking time, Tesla also finished reviewing the information about this world.

Unbelievable that he had been summoned by someone who wanted to destroy the world—Tesla had slowed down as much as possible after realizing this fact, to buy time for Ritsuka and the others to arrive.

However, looking at everyone who had fully recovered, Tesla could not suppress his fighting spirit, and his eyes gleamed with desire.

"It's regrettable, but I have no choice but to fight you!" He spread his hands, crackling lightning gathering on his fingers, reflecting on his face. "After all, my existence was summoned for this purpose. And—"

He looked towards the city center, where skyscrapers stood not far away.

"—It's rare to gain power in the present world." Playing with the electricity in his palm, he spoke with interest, but with a hint of madness in his words. "Let me put my previous plans into action."

With a wave of his hand, a dense sphere of magical mist appeared in front of Tesla, and with just a flick of his finger, Tesla sent it all hurtling towards Ritsuka and the others.

"Tch..." He quickly dodged to the side, but just as the ball of magic mist passed by his body, Mordred suddenly seemed to sense something and instantly swung his sword down behind him.

A flash of purple lightning streaked across the sky and vanished beneath Mordred's blade.

"What happened...?!" Staring at his sword blade in disbelief, then at the dissipating demonic mist that had flown into the distance, he exclaimed, "This demonic mist... it even carries lightning?!"

“This…this is really bad…” Mary gritted her teeth as she looked at the soaring magic power on the screen. “The magic mist has been imbued with lightning powerful enough to kill someone.”

"Is this what they call the activation of the magical mist?!" Tesla nodded with satisfaction, extending his palm towards Nian Zhuo and the others. A thin mist, carrying strands of lightning, drifted among them. "It can even absorb the magical power of Servants infinitely!"

Immediately afterwards, a massive amount of magical mist appeared around Tesla, enveloping his body as if he were wearing armor made of mist.

"Ugh...!" Mash, Mordred, and even Nenju all felt their magic power constantly draining away. "In that case... you too...!" They looked at Tesla, who was shrouded in thick fog.

"Hahaha! Too bad! Of course, I'm an exception!" Tesla laughed gleefully, enjoying the feeling of the magical mist carrying Nian Zhuo and the others' magic power into his body and transforming into strength. "If you get close, the activated magical mist will absorb your magic power! Even your spirit cores might be absorbed! Even so, do you still intend to approach me?"

"..." Without even making eye contact, Nian Zhuo and the others took a step toward Tesla.

Seeing that everyone else had made the same choice as them, whether it was Nian Zhuo, Mordred, Mash, or even Ritsuka, they all wore proud smiles.

"Very good." A faint smile appeared on Tesla's face as he pointed to the demonic mist surrounding his body. "If you want to defeat me, you'll have to completely eliminate this activated demonic mist first—"

Raising his hand, purple lightning surged toward Nianzhuo and the others, then struck Mashu's shield.

A heavy thud followed, and purple lightning instantly knocked Mash back.

"Unable to get close—?" Both the lightning unleashed by the opponent and the dense fog surrounding Tesla's body were extremely troublesome for Nian Zhuo and his group at the moment.

"Director Mary, we have no way to fight like this!" Mash asked Mary of Chaldea while using her shield to block the lightning bolts that were being unleashed one after another.

"All we need to do is blow away the nothingness, right?" Mordred glanced at Mash and held the blade up in front of her. "That's simple."

“Since this fog absorbs magic…” She closed her eyes, and when she opened them again, the warrior’s rage burned within them. Crimson lightning appeared and blew up the girl’s golden hair. Mordred stared at Tesla’s body, and the two armor plates covering the blade popped down like a switch.

"Then as long as I use my full strength, it will surely work! I'll give it a try!" She held the sword to her side, and black lightning flickered faintly within the crimson blade.

"To my magnificent—" Mordred closed his eyes, and the ground around him even sank due to the ever-increasing magical power emanating from him. Black lightning mixed with crimson lightning, gradually staining the bright silver blade with an ominous black.

"—Father's Rebellion! [Clarent Blood Arthur]!!"

Red lightning intertwined with black lightning formed a massive torrent that swept across and overturned the surrounding ground.

"Mr. Nianzhuo! And senior!" Mash immediately retreated and stood in front of Nianzhuo and Ritsuka, holding her shield to block the continuous impact of Mordred's full-force attacks.

The black lightning twisted and formed a vortex within the red torrent, looking so abhorrent and full of calamity.

"...[Rebellion against my magnificent father] Ah." Nian Zhuo scratched his cheek, his face, hidden beneath Si Zai's mask, also showing surprise. "It's the so-called 'troll sword' from before... but this power..."

Gravel, soil, or even the lightning bolts unleashed by Tesla could not stop the red and black light stream for a moment. Upon contact, they all turned into magical particles and dissipated into the air.

[Rebellion against my magnificent father]: A++

The fully unleashed state of "Clarent, the King of Radiant Sword".

Because Mordred once stole the Clarent, the proof of kingship, from King Arthur and used it to inflict a fatal wound on him, it transforms into an evil sword of abomination when Mordred picks it up.

Originally a magnificent sword radiating silver light, it became stained with crimson and black blood upon activation, its shape twisting grotesquely. The Calamity Demon Sword, imbued with surging hatred that coiled around its blade and radiated forth.

When the true name is released, a straight line of red lightning will be released from the sword's edge.

Then, the red and black torrent crashed into the thick fog in front of Tesla.

"Ugh...!" In an instant, Tesla was forced back several steps by the astonishing amount of magical power emanating from the magical mist. Clutching his chest, he looked at Mordred, who was using all her strength, with some surprise. "What... what kind of powerful force is this...?"

"In that case... use your magic to block your attack!" Then, he also stretched out his hands, and purple lightning, carrying the magic from Mordred, transformed into layers of mist to reinforce the wall of fog.

"Aaaaaaahh ...

"Hahh ...

"My rebellion... my jealousy... how could... be stopped by something like this?!" He roared, the blade of his sword gushing out even more red light.

Gradually, the magical mist that could devour magic power... began to shorten.

"...How is this possible?!" Tesla noticed this change and tried to further enhance the magic of the magic mist, even using his own magic power, but he could only watch helplessly as the crimson lightning gradually tore through the magic mist.

"...How could this be the result?!" A roar filled with disbelief and resentment erupted as crimson and black lightning and demonic mist enveloped, swirled, tore, and exploded.

"Ugh!" The gust of wind sweeping in all directions made Mashu and Ritsuka squint slightly. "We can't see... what's happening on the battlefield...!"

"..." Nian Zhuo remained silent and motionless, staring at the direction from which the impact was coming.

"...Hoo." Mordred exhaled a breath of stale air, turned the blade over and stuck it into the ground, placing his hands on the hilt.

The impact ruffled her blonde hair, but did not affect her somewhat thin body.

Like an invincible general, or a Valkyrie who vanquishes the enemy.

...He still seemed like a somewhat helpless child.

No, I can't worry about that right now.

As the smoke and impact gradually dissipated, Tesla's still-standing figure was revealed.

"……!" A look of "I knew it!" appeared on his face, but Nian Zhuo still sighed with regret.

However, compared to its initial glorious and imposing presence, Tesla now looks somewhat disheveled.

Even his clothes were covered in dust, and he clutched his chest, staring incredulously at Mordred standing there.

"Fantastic!" Mary couldn't help but exclaim, looking at the rapidly dropping magic power on the screen. "It's actually the true name release of a Noble Phantasm! That's amazing! Although most of it was absorbed in the clash with the magic mist, the mist was completely separated and shattered!"

"Huff... Huff... Don't even think about it!" Tesla's face turned gloomy, and in the blink of an eye, a faint mist began to rise around him again.

"Quick! The fog hasn't completely dissipated! It might return to normal soon! But you can fight him during this limited time!"

“This power, this sword.” Tesla couldn’t help but exclaim as he looked at Mordred’s standing figure. “—Undoubtedly Clarent. Hahaha… Hahaha!” He looked at Mordred and finally recognized her identity.

"So that's how it is. Then this girl is Mordred, an ancient heroic spirit belonging to the earth!" Tesla clasped his hands together, and a strong fighting spirit began to emerge in his eyes.

"Perfect timing! A rare opportunity! Let me wipe out both the Earthly Heroes and the Heavenly Heroes in one fell swoop!" A hand crackling with lightning slammed into the ground, and coarse lightning bolts darted toward Mordred like writhing snakes.

"The myths of the old era have no reason to exist! The only heroic spirits that should exist after the electrical civilization are humans and stars!"

"Come on! You scum of fantasy! Your illusory and increasingly vanished old myths!"

[Human Mythology: The Descent of Lightning!]

The once quiet and empty streets were now torn apart by flashing lightning and violent explosions.

In an instant, the road surface of an entire street was torn open, and flashing purple lightning enveloped Tesla's body, propelling him from the other end of the street.

Before him were Nian Zhuo and Mordred, relentlessly pursuing him.

"Ah—!" A sound came from above. Looking up, he saw a purple-haired girl raising her shield high and smashing it down on him.

"—!" Just as Tesla raised his palm, intending to unleash the lightning in his hand at the girl in mid-air who had no way to dodge, he was interrupted by the red figure that suddenly appeared in front of him.

It was Nian Zhuo, who had unfurled crimson dragon wings on his back, who, after transforming into Decade form, used the power of the wizard to transform into a fire dragon form and began a magical clash with Tesla head-on.

In contrast to Tesla's outstretched palm, Nian Zhuo's hand was also burning with crimson flames.

"Get out of my way!" Tesla roared unwillingly, his left hand forming a bow shape while his right hand pulled back.

As he moved, purple electricity gathered in his hand, forming a lightning bow.

"...Don't even think about it, you won't succeed!" Immediately afterward, flames burned on Nian Zhuo's hands, forming a long blade.

Purple lightning bolts condensed on Tesla's taut bowstring and then shot towards Nianzhuo with a loud crackling sound.

Nian Zhuo, meanwhile, used flames to continuously reinforce the flaming sword in his hand. Facing the incoming lightning arrows, he glared angrily and slashed the crimson flaming sword at the arrows.

Lightning flashed and flames roared.

The Fiery Sword in Nian Zhuo's hand shattered simultaneously with the lightning arrows that Tesla had launched, and sparks and black smoke surged outwards.

"It's not over yet!" Mordred's voice came from behind the black smoke. Although her magic power was slightly insufficient, she still swung her sword at Tesla.

"...!" Tesla's smile came into view, and a faint, unreadable light flickered in the other's pale green eyes.

In the blink of an eye, electricity gathered again in the opponent's hands, and he threw it with perfect accuracy at Mordred's forehead.

"What!" Mordred was in no time to think about why the other party was unaffected by the fluctuating airflow, even though they were both in the same position falling from a great height. The two sharp bolts of lightning shot straight toward his forehead.

"Tch!" Mordred spat in frustration, raised his sword to block the two incoming lightning bolts, and his falling speed suddenly slowed down.

Gifted wisdom: A-EX.

Skills that showcase unparalleled innate wisdom.

It allows for the use of most skills at a proficiency level of A to B, excluding physical burdens (such as divinity) and skills unique to the hero.