As Jalter shouted the true name of her noble phantasm, the black-flamed evil dragon battle flag, burning fiercely, was swung with full force.
It did not erupt from the swing of the flag, but rather exploded from beneath the river!
In an instant, the pitch-black demonic flames of vengeance erupted from the riverbed upwards, instantly evaporating the lower half of the Weiyuan River!
The Weiyuan River, from beyond the Fuyuki Bridge, transformed into a river of soaring black flames!
An immeasurable amount of river water was instantly vaporized, and the inextinguishable demonic flames extended all the way to the sea!
Mucus was evaporated, flesh was ignited, and with crackling sounds of burning, the colossal Sea Monster, originating from the Cthulhu mythos, instantly became the most spectacular black bonfire.
Puff! Puff! Puff!
From the black river of flames, a dozen hundred-meter-long black iron spears suddenly pierced through the colossal body of the Sea Monster, as if truly roasting it over black flames, propping it up.
"Hahahaha... Ah hahahaha...!"
Caster, enduring the infernal torment alongside the Sea Monster, did not appear as wretched as the Sea Monster, which trembled and convulsed from the scorching flames.
His prolonged laughter, echoing across the entire Weiyuan River, was filled with liberation and relief, as if he had let go of all his obsessions and burdens.
"So that's it... So that's it! It turns out that from the very beginning, only I was the one who fell into hell! In that case, even if I fall into the Crimson Lotus Hell, I, Gilles de Rais, have no regrets!
Girl born from my obsession, I entrust this will to avenge God to you."
"Ah, leave it to me..."
Jalter looked at the Sea Monster, which was as if it was being roasted alive on a spit, stating calmly.
She held the flag in her right hand and drew the sword of saint catherine from her waist with her left.
The slender, light rapier suddenly pointed towards the executed prey, activating the final stage of her noble phantasm.
Boom—!!!
The ten-mile-long pitch-black river of flames erupted again, surging towards the sky!
It was as if a pitch-black wall had been erected between Shinto (New City) and Miyama Town.
On this constantly rising wall of fire, countless wailing and distorted faces flickered into view, their mournful cries mixed with the fierce roar of the black flames.
This wall of fire depicted the scene of hell itself.
Utterly evil, utterly wicked, it was the ultimate evil flame from the deepest layer of the seven hells, burning the entire world with all impurity and defilement as its fuel!
The raging demonic flames ravaged the river for only a moment before dissipating.
As the flames vanished, they revealed the riverbed melted into lava.
The moment the water flowing from upstream and the seawater that had flowed back in came into contact with the freshly scorched and blackened surface, the residual heat instantly vaporized a large amount of the new water flow, shrouding the entire Weiyuan River in a thick, impenetrable mist.
When the mist cleared, the Weiyuan River returned to its usual appearance.
At the end of this night, it seemed only the river could flow quietly and unchangingly, as it always had.
Everyone on the riverbank was utterly stunned by Jalter's earth-shattering attack, even Lancelot.
The situation was clearly intentionally controlled by the user, narrowing the noble phantasm's area of effect into a linear strike confined to the river.
If it had been allowed to spread uncontrolled, the fire could have engulfed the entire Fuyuki City!
Most surprised were Saber and Irisviel, who had fought Jalter before.
If such a noble phantasm, capable of creating a living hell, had been used in their initial battle, they would have certainly been eliminated unless Irisviel had returned avalon to Saber to activate 'avalon, The Everdistant Utopia'.
"...Rider, do you have the confidence to defeat that Servant?"
"Hmph—It seems this Holy Grail War is unusually deep.
However, that black-clad girl who just appeared shouldn't be called a Servant anymore.
She didn't descend as a projection of a Heroic Spirit, like us, but as a complete Heroic Spirit.
Alright, kid, tonight's battle is over.
Time to call it a day, let's go!"
"Hey, hey, hey! Just leaving like that?!"
"Ah hahahaha! When you have to face something, you have to face it.
Instead of worrying nervously here, it's best to return to camp and carefully think about strategy."
"But... but aren't you worried at all?"
"Worried? What is that? Who do you think I am? I am Iskandar, the King of Conquerors! Ahahaha...!"
Amidst the thunderous roar, the mighty divine bull, treading on lightning, carried the King of Conquerors and his young Master towards the sky with a hearty laugh, departing without any hesitation.
Jalter had already left after seeing Caster off. Lancelot also entered his spirit form after the King of Conquerors departed, rushing back to the Twin Mansion. Only Saber and Irisviel remained by the shore...
"Jalter, you're really something. Why be so serious? You used up all the magical energy you had stored and generated, and now you're even drawing from mine."
"To send off an old friend, one must give their all, at least once..."
"Forget it, come back quickly. Tonight ends here. This Holy Grail War is already nearing its conclusion."
At Jalter's speed, even without high-speed movement in spirit form, it only took a moment to return to the Twin Mansion. As usual, she leaped directly over the wall. When Jalter pushed open the door and entered the house, she couldn't help but freeze—
"Who are you?!"
In the main hall of the mansion, there was a girl Jalter had never seen before, with long green hair reaching her heels, styled into twin-tails. She was wearing a standard maid outfit and cleaning the room. When she heard Jalter's question, she turned her head with a bewildered look, her delicate face full of innocence and curiosity as she tilted her little head.
"Mi..."
The unclear word, called out by this innocent murmur, made Jalter's temple twitch involuntarily. Jalter didn't know how to respond to her. People who hate gods and retaliate against society often have no way of dealing with such overly innocent individuals. For a moment, Jalter and the unexpectedly appearing girl stared at each other motionlessly.
The innocent girl looked at Jalter with curiosity, while Jalter was awkwardly at a loss for what to do. It was clearly impossible for her to be an enemy appearing in the mansion, especially since she had just mentally communicated with her Master and everything was normal. Moreover, Lancelot was still standing by the wall, but unfortunately, Jalter couldn't communicate with him verbally.
Fortunately, Jalter's awkwardness didn't last long. Rin, noticing her return, came out from the inner room. The innocent green-haired girl immediately skipped and hopped over to Rin, happily like a pet puppy wanting to please its owner, hugging Rin's arm and rubbing her face against it.
Rin smiled and reached out to stroke the girl's onion-green hair. Jalter asked Rin, puzzled:
"Master, who is she?"
Rin smiled, rubbing the girl's head, and replied:
"This is a familiar I just created using the magecraft reriqument: blood fort andromeda I acquired tonight. Her name is MIKU. You've seen her original form before, haven't you? It's the thing I used to kill Kayneth."
"Ah? She's that big ball of mercury?"
Rin smiled and looked at the familiar girl named MIKU. Little MIKU understood Rin's meaning and instantly transformed back into the mercury ball state of the magecraft reriqument: blood fort andromeda, dropping to the ground.
"Uh, magic is truly amazing..."
"Of course, you were made this way too."
"I wasn't!"
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