Crossover Anime: Starting by fusing with an old sword and summoning Morgan

Weiyuanchuan, above the river surface.

Despair is spreading.

The "Great Sea Demon" summoned by Caster Gilles through a life sacrifice had now swelled to a suffocating size.

The hundred-meter-tall mass of flesh writhed wildly, its countless tentacles lashing the water's surface. Each regeneration was larger and more grotesque than the last.

"Ora ora ora!!"

Iskandar, the Conqueror King, rode the [Divine Wheel], transforming into a bolt of lightning as he traversed the tentacled jungle.

But even the hoof-like thunder of the divine bull was merely a tickle to this monster with its infinite regenerative abilities.

"Damn it! We can't kill them all!"

The Conqueror wiped the seawater from his face and shouted towards the shore:

"Hey! Sabers! If we don't act soon, this thing is going to climb ashore and eat Fuyuki City like it's a buffet!"

On the shore, on top of the container.

Gilgamesh, the King of Heroes, sat on Vimana, swirling a glass of red wine in his hand, his face full of disdain:

"That filth is so disgusting that even touching it with my treasured artifacts would make me feel nauseous. If it is not cleaned up, I will wipe you all out."

……

"It seems the stage is ready."

Luo Chen stood atop the steel frame of the bridge, the wind whipping his clothes.

He glanced at Artoria beside him.

The young female knight king was gripping the invisible sword tightly. Her emerald eyes held a resolute determination, but also a hint of fear of this enormous monster.

"Saber," Luo Chen's voice was calm yet powerful, piercing through the wind, "Do you remember what we talked about at afternoon tea?"

"Yes!" Artoria nodded. "As long as we completely vaporize it in one blow, leaving not even a single cell behind!"

"That's right. But the ordinary radiance of the holy sword might not be enough."

Luo Chen slowly raised his right hand.

Golden particles began to gather wildly in what was once an empty palm.

A longsword with a sheath, more intricate and ancient in design than Artoria's holy sword, and even carrying a hint of divine aura, slowly emerged.

Excalibur Proto

Unlike Artoria's holy sword, which symbolizes "perfection," the one in Luo Chen's hand is a decisive weapon designed to defeat the "behemoths" that threaten the world.

"Morgan!" Luo Chen suddenly shouted to the sky.

"Tsk, they really know how to order people around."

Morgan, suspended high in the air, looked displeased, but the magic gun in his hand was already poised to fire.

"Look closely, this is a gift from the Queen—don't let this filthy thing soil my skirt!"

【Fairy Magic: Water Cage】!

Morgan pointed his magic gun downwards.

The once surging waters of the Weiyuan River suddenly defied the laws of physics and surged back, forming a huge blue cube that trapped the Great Sea Demon within!

"Only ten seconds! Blast it to smithereens!" Morgan roared.

"That's enough!"

Luo Chen looked at Artoria, and their eyes met in mid-air.

That was a resonance that transcended the world.

Artoria raised the Holy Sword high with both hands, the Wind King's Barrier was released, and golden light illuminated her face.

Luo Chen also raised his sword.

But instead of gathering magic directly, he closed his eyes and began chanting the ancient and sacred unsealing incantation.

This sword is normally sealed.

To demonstrate true power, one must pass the "decision" of the Knights of the Round Table.

"—Seal Thirteen: Decision Start!"

The mechanical system voice overlapped with Luo Chen's solemn voice, echoing through the night sky:

"—This is a battle to save the world. (Acknowledged by: Arthur)"

"—This is a battle for survival. (Acknowledged by: Kay)"

Although I didn't gather all thirteen restraints, two would be enough for this great sea demon before me!

Click!Click!

The holy sword in Luo Chen's hand erupted with crimson lightning, and the sealed armor on the sword peeled away layer by layer, revealing its dazzling true form inside.

Artoria sensed the terrifying magical power around her that caused the space to tremble.

That is the same source, but a far more violent power!

Without further hesitation, she poured all her magic into the sword.

"Gathering the Breath of the Stars—"

"The radiant flow of life—"

The two stepped forward simultaneously, their movements perfectly synchronized.

The light on the left is sacred and pure, while the light on the right is domineering and crimson.

"Ex——calibur!!!"

"Ex——calibur!!!"

Boom! ...

Two beams of light.

One was like a golden torrent, the other like a crimson laser.

They converged and spiraled in the air, eventually transforming into a destructive storm powerful enough to pierce the earth's crust, which slammed heavily onto the enormous water cage.

Faced with that absolute high temperature and sacred attributes, the sea demon didn't even have a chance to regenerate and was instantly vaporized!

Along with Gilles de Rais inside it.

In the last moment before consciousness faded.

Giles opened his eyes in the dazzling light.

He saw the two "kings" standing side by side, their light pure and without a trace of impurity.

"Ah...this is...a true miracle...?"

"Joan of Arc...I was wrong..."

A relieved smile appeared on Giles's face before he turned completely to ashes.

……

The light dissipated.

The original sea monster disappeared, and a section of the Weiyuan River was completely evaporated, revealing the scorched riverbed.

A light drizzle began to fall from the sky, an echo of the magic's exhaustion.

shore.

Artoria was breathing heavily, her sword hanging limply at her side.

That attack just now almost drained her magic power.

Her body went limp, and she staggered, almost falling over.

Snapped.

A strong hand supported her shoulder.

Although Luo Chen also suffered some losses, his mana regeneration speed was astonishingly fast thanks to the [Crimson Dragon] Heart.

"Are you alright, Saber?"

Luo Chen helped Artoria sit up straight and casually tucked her rain-soaked bangs behind her ears.

Artoria looked up at Luo Chen, who was standing right in front of her.

Rainwater slid down his handsome face, and his emerald green eyes were full of concern.

Their magic had deeply merged during their combined attack, and at this moment, she could even clearly feel Luo Chen's heartbeat.

"I...I'm fine."

Artoria's cheeks flushed slightly in the rain, and her heart raced.

This feeling of fighting side by side and being supported by the other at the last moment...

"If it were him... perhaps it really could..."

A dangerous thought began to sprout in the heart of the Knight King.

[Ding! Congratulations, host, on completing the mission: The End of Wei Yuanchuan.]

[Achievement Completed: Dual Holy Swords]

[Reward: Template integration accuracy increased to 35%.]

"snort."

Morgan slowly descended from the sky.

She put away the magic gun and looked at the somewhat ambiguous scene, but she didn't fly into a rage like before.

Because she saw the "dependence" and "adoration" in Artoria's eyes.

That was the look a subject gave the king.

"Although I hate to admit it, that last move... was indeed quite spectacular."

Morgan walked to Luo Chen's other side, forcefully taking his arm to assert her dominance, while giving Artoria a cold glance at her:

"Don't think this is over, Saber. Now that the battle is over, don't linger in my husband's arms."

Artoria straightened up as if she'd been electrocuted: "I-I'm sorry! I'm just exhausted!"

Luo Chen, with a woman on each arm, looked at Fuyuki City after the rain and a smile played on his lips.

This battle not only elevated Caster's reputation but also completely opened up the Saber route.

This is a sure thing.

However, at that moment...

The top of a tall building in the distance.

Kirei Kotomine watched this scene, a gleeful yet twisted smile curling at the corners of his mouth.

"Two King Arthurs...and that witch."

"Is this the variable that's causing trouble even in the King of Heroes?"

"It seems this play is getting more and more interesting."