Mio River, above the water’s surface.
Despair was spreading.
The “Great Sea Demon” summoned by Caster Gilles through a blood sacrifice had now expanded to a suffocating scale.
The hundred-meter-tall mass of flesh writhed frantically, countless tentacles lashing at the water’s surface, each regeneration making it larger and more disgusting than before.
“Ora ora ora!!” The Conqueror King Iskandar drove his [Gordius Wheel], turning into a bolt of lightning as he wove through the jungle of tentacles.
But even the thunderous hooves of the divine bulls were merely tickling the monster, which possessed infinite regeneration capabilities.
“Damn it!
It’s impossible to kill!” The Conqueror King wiped the seawater from his face and shouted toward the shore: “Hey!
Sabers!
If you don’t make a move, this thing is going to crawl ashore and eat Fuyuki City like a buffet!” On the shore, atop the containers.
The King of Heroes Gilgamesh sat on the Vimana, swirling a glass of red wine, his face full of disdain: “That filthy thing…
I would feel disgusted even touching it with a Noble Phantasm.
If you don’t clean it up, I will purge you all together.” “It seems the stage has been set.” Arthur stood atop the steel frame of the bridge, the gale blowing his coat.
He glanced at Artoria beside him.
The young Knight King was gripping her Invisible Air tightly at this moment; although there was determination in her emerald eyes, there was also a trace of wariness toward this massive monster.
“Saber.” Arthur’s voice was calm and powerful, piercing through the wind.
“Do you remember what we talked about during afternoon tea?” “Yes!” Artoria nodded.
“As long as we evaporate it in one blow, leaving not even a single cell behind!” “Exactly.
But the radiance of a normal holy sword might not be enough.” Arthur slowly raised his right hand.
In his previously empty palm, golden particles began to gather frantically.
A sheathed longsword, with a design more intricate and ancient than Artoria’s holy sword, and even carrying a hint of the Age of Gods, slowly materialized.
[Excalibur · Proto] Unlike Artoria’s holy sword, which symbolized “perfection,” the one in Arthur’s hand was a decisive weapon designed to crush “beasts” that threatened the world.
“Morgan!” Arthur suddenly shouted toward the sky.
“Tsk, you really know how to order people around.” Although Morgan, hovering high in the air, looked displeased, the magic spear in her hand was already primed and ready.
“Watch closely, this is a gift from your Queen—don’t let this filthy thing soil my skirt!” [Fae Thaumaturgy · Water Cage]!
Morgan pointed the magic spear in her hand downward.
The surging water of the Mio River suddenly defied the laws of physics, coiling upward to form a massive blue cube, trapping the Great Sea Demon firmly inside!
“Only ten seconds!
Blast it to smithereens for me!” Morgan commanded.
“That’s enough!” Arthur looked at Artoria, their gazes meeting in the air.
It was a resonance that transcended worlds.
Artoria raised her holy sword high with both hands, Invisible Air was released, and the golden radiance illuminated her face.
Arthur likewise raised his sword.
But instead of gathering mana directly, he closed his eyes and began to chant that ancient and sacred unsealing incantation.
This sword was normally in a sealed state.
To unleash its true power, it had to pass the “decision” of the Knights of the Round Table.
“——Seal Thirteen · Decision Start!” The mechanical system sound overlapped with Arthur’s solemn voice, resounding through the night sky: “——This is a battle to save the world.
(Approver: Arthur)” “——This is a battle for survival.
(Approver: Kay)” Although the thirteen seals were not all gathered, for the Great Sea Demon before them, two were enough!
Crack!
Crack!
The Excalibur in Arthur’s hand erupted with crimson lightning, the sealed armor on the sword peeling away layer by layer to reveal its dazzling true form within.
Artoria felt the terrifying mana beside her that made the space tremble.
It was a power of the same origin, yet far more violent!
She no longer hesitated and poured her own mana into the sword without reservation.
“Gathering the breath of the stars—” “The flowing torrent of shining life—” The two stepped forward simultaneously, their movements perfectly synchronized.
The radiance on the left was holy and pure, while the radiance on the right was overbearing and crimson.
“Ex——calibur!!!” “Ex——calibur!!!” Boom————!!!
Two beams of light.
One like a golden torrent, the other like a crimson laser.
They intersected in the air, spiraling together, and finally transformed into a destructive storm capable of piercing the crust, slamming heavily into that massive water cage.
In the face of that absolute heat and holy attribute, the Great Sea Demon didn’t even have a chance to regenerate and was instantly vaporized!
Along with Gilles de Rais inside it.
At the final moment as his consciousness dissipated, Gilles opened his eyes amidst the dazzling radiance.
He saw those two “Kings” standing side by side, that pure light containing not a single impurity.
“Ah…
is this…
the true miracle…” “Jeanne…
I was wrong…” A trace of relief appeared on Gilles’s face, and then he turned completely into ashes.
The light dissipated.
The original Great Sea Demon was gone, along with a section of the Mio River which had been completely evaporated, revealing a scorched riverbed.
A light drizzle began to fall from the sky; it was the echo of depleted mana.
On the shore.
Artoria was panting heavily, her sword hanging at her side.
That blow just now had almost drained all her mana.
Her body went limp, and she stumbled, nearly falling.
Pat.
A strong hand caught her shoulder.
Although Arthur was also somewhat exhausted, possessing the heart of the [Red Dragon], his mana recovery speed was astonishingly fast.
“Are you okay, Saber?” Arthur steadied Artoria and reached out to brush her wet bangs behind her ear.
Artoria looked up, gazing at Arthur who was so close.
Rainwater slid down his handsome face, and those emerald eyes were full of concern.
Their mana had deeply merged during the combined attack just now, and at this moment, she could even clearly feel Arthur’s heartbeat.
“I…
I’m fine.” Artoria’s cheeks flushed slightly in the rain, her heart beating faster.
This feeling of fighting side by side, and being supported by him at the final moment…
“If it’s him…
perhaps it’s really possible…” A dangerous thought sprouted in the Knight King’s heart.
[Ding!
Congratulations to the host for completing the mission: The End of Mio River.] [Achievement unlocked: Dual Excalibur.] [Reward: Template fusion rate increased to 35%.] “Hmph.” Morgan descended slowly from the sky.
She put away her magic spear, watching this somewhat ambiguous scene, but she did not fly into a rage as before.
Because she saw the “reliance” and “admiration” in Artoria’s eyes.
That was the look of a subject toward their King.
“Although I don’t want to admit it, that move just now…
was actually quite magnificent.” Morgan walked to the other side of Arthur, forcefully linking her arm with his to declare her sovereignty, while coldly glancing at Artoria: “Don’t think this is over, Saber.
Since the battle is over, stop clinging to my husband.” Artoria straightened up as if electrocuted: “S-sorry!
I was just exhausted!” Arthur, with one on each arm, looked at Fuyuki City after the rain, the corners of his mouth curling up.
This battle not only took out Caster but also fully opened up the Saber route.
This wave was secure.
However, at this moment.
At the top of a distant high-rise building.
Kotomine Kirei watched this scene, a pleasurable and twisted smile curling on his lips.
“Two King Arthurs…
and that witch.” “Is this the variable that even the King of Heroes finds troublesome?” “It seems this play…
is getting more and more interesting.”