"How are you feeling, Nezuko?"
Tanjiro looked at his sister with worry.
Although Uncle Nine, as a seasoned Demon Exorcist Master, should not make mistakes, these were, after all, two different worlds, and there might be subtle differences.
"Pfft…"
The mini-sized Nezuko suddenly lay on her back, arms and legs spread out on the ground.
A puff of black smoke shot out from her mouth.
It was as if she had eaten a lit firecracker.
Tanjiro's eyes nearly popped out in fright, and he frantically shook Nezuko.
"Wait, Tanjiro…"
Sakonji Urokodaki noticed something amiss and quickly pulled back the panicking Tanjiro.
Just then,
The mini-sized Nezuko's body gradually returned to normal, transforming into her human form, with the same black smoke continuously seeping from her skin pores.
It was foul-smelling and evil.
"This is… demon blood?"
Tanjiro's nose twitched, and upon smelling the stench, he immediately recalled the scene of his family being slaughtered by the Demon King.
At that time, Nezuko still had a faint trace of this smell on her.
It was Muzan Kibutsuji's blood!
Under the effect of the [Five Yang Red Pill] refined by Uncle Nine, it was continuously purged from her body by a medicinal power that was like the sun, yet exceptionally gentle.
"It's working!"
Tanjiro trembled with excitement, covering his mouth, afraid of disturbing Nezuko's transformation.
As the demon blood seeped out,
Nezuko's fangs in her mouth gradually shortened, and her demon pupils slowly changed back to those of a normal human.
After an unknown amount of time,
Nezuko, from whom no more black smoke seeped, got up blankly and stumbled to the edge of the house.
"Nezuko!"
Tanjiro cried out in belated surprise,
Only to see Nezuko already bathed in the sunlight.
"Bro… Brother… I…"
Nezuko felt lightheaded and, seeing the familiar man in front of her, tried to speak but found it difficult.
Tanjiro rushed over and pulled his sister into his arms, tears streaming from his eyes.
"Nezuko… Nezuko… Nezuko… This is wonderful!"
Tanjiro seemed to have broken some heavy shackles in his heart, crying loudly without restraint.
Ever since his father's early death, Tanjiro had taken on the responsibility of the family, looking after his younger siblings and making a living by selling charcoal.
No matter how hard or tiring it was, he never complained.
Until the Demon King killed his entire family, and even his sister became a man-eating demon,
He still gritted his teeth and persevered, wielding the Nichirin Blade that could slay demons, protecting his sister, and attempting to become a member of the Demon Slayer Corps.
Until now,
Tanjiro only then acted like an un-aged child, overjoyed by his sister's rebirth.
"Because she was a demon for too long, her memories are a bit blurry, but they should slowly recover."
Sakonji Urokodaki did not disturb Tanjiro.
A moment later, he began to observe Nezuko's physical condition, discovering something so astonishing that he couldn't help but exclaim, "How is this possible?!"
Hearing the sound,
Tanjiro's heart tightened again, and he asked, "Is something wrong, teacher?"
Sakonji Urokodaki's expression was serious, and he stared closely at Nezuko, confirming that he had not made a mistake before saying, "Nezuko has returned to being human, but her physical functions are terrifyingly strong, still comparable to when she was a demon."
Nezuko, having returned to being human, still maintained the strength of a demon in her physical abilities.
And she was no longer afraid of sunlight.
Tanjiro also found it incredible, exclaiming in surprise, "There's such a thing as that?"
He then recalled Uncle Nine's deduction about the Demon King, which he had told him.
The Demon King's birth was due to the general trend of the world and an Yin-attribute potion, causing a certain degree of evolution and mutation in life.
If this mutation was correct, it would be a product similar to an Yin God,
In Uncle Nine's world, these would be Yin-qi deities like Night Roaming Gods or Underworld Ghost Generals.
But if the mutation was wrong or failed, it would result in monsters like zombies and vengeful spirits.
Muzan Kibutsuji was clearly the latter,
So the humans he turned into demons were also failed evolved beings, just like him.
And the medicinal power of the [Five Yang Red Pill] compensated for the failure of the mutation to some extent, causing a positive change.
It was similar to a faint part of the effect of the [blue spider lily], which Muzan Kibutsuji dreamed of completing.
Therefore,
The current Nezuko was not a demon, but a new type of human in a completely new state, having improved upon Muzan Kibutsuji's failed mutation.
Even Uncle Nine had not anticipated this change.
"The Demon Slayer consciousness is quite good at leveraging opportunities."
Inside the Reincarnation Game, Fang Yi saw Nezuko, who had overcome the sunlight, and the corners of his mouth curved slightly as he said, "Under normal circumstances, it would be extremely difficult for a failed product of Muzan Kibutsuji's mutation to compensate for its defects."
Benign mutation,
To put it simply, it's like buying a lottery ticket; the codes of the soul and genes have countless possibilities, and perhaps tens of thousands or millions of demons eating the [Five Yang Red Pill] might only result in one benign mutation.
However,
The Demon Slayer consciousness, in order to eliminate Muzan Kibutsuji, this failed product, did not hesitate to expend a large amount of its origin to directly use Nezuko, who had eaten the [Five Yang Red Pill], as a template for benign mutation.
In other words, the elixir Tanjiro brought back from the mission world, from now on, due to the intervention of the Demon Slayer consciousness, possessed effects similar to the blue spider lily.
It could purify the failed blood of Muzan Kibutsuji.
"That's good. The Demon Slayer World wants to eradicate Muzan Kibutsuji and is even willing to use the Reincarnation Game to create new humans."
Fang Yi smiled and muttered to himself, "For me, these new humans are excellent players, a win-win cooperation."
The news of a demon turning back into a human,
Blew like a hurricane towards the headquarters of the Demon Slayer Corps, and was then distributed across the entire Demon Slayer Continent as a seed of hope.
With the guarantee letter from the former Water Pillar, Sakonji Urokodaki,
And the diagnosis after the Master personally summoned Tanjiro confirmed that this news was accurate.
The Demon Slayer Corps and Muzan Kibutsuji had fought for nearly a thousand years, with countless humans dying and loved ones turning into evil spirits, and now they had finally found a way to turn demons back into humans.
"Is that so?"
Yashiki Kagaya's face was filled with excitement; he was no longer as weak as before.
As a fellow player, his strength had surpassed all the Pillars; even against the Upper Ranks, who were rumored to be able to instantly kill Pillar-level swordsmen, he could easily win.
Wielding a [Demon Hunter Weapon], he was completely the bane of demons.
"It's alright, I can give you all the reward points, as long as we can save the humans who have been turned into demons, any sacrifice is valuable."
Yashiki Kagaya did not hesitate at all.
Upon hearing that the elixir in Tanjiro's hand, which could turn demons into humans, came from the mission world's [Uncle Nine's Righteous Estate],
He was willing to pay out all his remaining assets to acquire those elixirs.
"In the past, demons attacked humans, treating the children of the Demon Slayer Corps as blood food, but now…"
Yashiki Kagaya was full of vigor, waving his hand and saying, "Kill those demons with heinous crimes, save those demons who have not yet fallen, and the shadow of Muzan Kibutsuji will be ended in our era!"
Tanjiro was exceptionally promoted to a Demon Slayer Corps swordsman, without needing to undergo the Wisteria Prison trial.
His first mission,
Was to go to the Mugen Train with the Flame Pillar to deal with the [Ripper] incident, which was suspected to be caused by evil demons.
Just as the conflict between the Demon Slayer Corps and the Demon King was intensifying on the Demon Slayer Continent,
The [Myriad World Invitation Letter] sent out earlier received a response,
Three figures appeared in the Reincarnation Game's [Thousand Year Snow Mountain].
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