The Foundation Begins by Inventing SCPs

Around them stood a dozen or so youths wearing animal masks.

"Sabito, senior!"

The moment Giyu Tomioka's soul saw the youth at their head, he could not help crying out, "So you never left!"

"I..."

Giyu Tomioka's soul was just about to say something.

But his soul began to crack apart, inch by inch. In the blink of an eye, a web of fissures covered his entire body. Then he shattered and vanished into nothingness.

The same thing happened to Giyu Tomioka.

Tanjiro had only just seen the souls of his family. Before he could even greet them, he too vanished into nothingness!

The viewers in the livestream could only marvel at the power of a conceptual erasure skill.

It was terrifyingly strong!

With a single touch, SCP-049 had not only ended their lives but erased their souls as well.

Every trace of their existence had been wiped from the world.

Just when everyone thought it was over, SCP-049 the Plague Doctor's rasping voice sounded again. "You are carriers of the plague too!"

"You must be treated as well!"

As it spoke, it pointed toward the souls of Sabito, Makomo, the other masked youths, and Tanjiro's family. With one light touch from SCP-049 the Plague Doctor...

The souls stared in bewilderment.

Then they began to crumble. Within a few breaths, they had vanished into nothingness.

The sight sent a chill down the spines of everyone watching the livestream!

They could not help wondering: What the hell is this "plague"?

Why would SCP-049 the Plague Doctor judge even souls to be carriers of the "plague" and kill them?

Was SCP-049 the Plague Doctor just insane?

After all, no one in their right mind

would do something like this.

It was unbelievable!

[Sengoku: What exactly is this "plague"? I seriously suspect it's just an excuse SCP-049 uses to kill people!]

[Caesar: I think so too!]

[Orochimaru: No. I think the "plague" it speaks of really exists. But SCP-049 has clearly lost its mind. It can no longer tell what the plague actually is!]

[That would explain everything it's done!]

[Aizen: Its attacks are a little like a Quincy's, but far more powerful!]

[Monster King Orochi: What a shame! Meow-Meow was carrying a large supply of Monster Cells. If Giyu Tomioka had taken one, he might have grown into a peak Demon-level monster!]

[Of course, if anyone here wants Monster Cells, contact me!]

[I'll give them to you for free!]

[Tatsumaki: I'm close to locating your lair. Prepare to die!]

[Monster King Orochi: I look forward to feeding you Monster Cells myself!]

[Luffy: Is this going to be an all-out war? @Tatsumaki, you can do it!]

[Tatsumaki: Don't worry! I'll crush Monster King Orochi, that piece of trash!]

[...]

While the viewers debated what SCP-049 meant by the "plague," SCP-049 seemed to sink into a strange mood on-screen.

It looked at the bodies of Giyu Tomioka, Tanjiro, and Nezuko and began sighing heavily.

SCP-049's Revolting Surgery and the Cowardly Muzan Kibutsuji!

On-screen, SCP-049 the Plague Doctor did not leave after erasing Tanjiro and the others. It stood beside their bodies, muttering angrily to itself:

"The plague! It must be treated!"

"I must find a way to cure the plague perfectly!"

"That is my responsibility!"

"You were all infected, so you had to be treated. Otherwise, the plague would use you as carriers to infect more people!"

As it spoke, the anger in SCP-049 the Plague Doctor's voice gradually faded.

After three or four minutes, the anger in SCP-049 the Plague Doctor's voice had completely disappeared. In its place were deep frustration and regret.

It crouched beside the bodies of Giyu Tomioka, Tanjiro, and Nezuko and said slowly, "I'm sorry. I failed you."

"After all this time, I still haven't found a perfect cure for the plague!"

"I had no choice but to erase you to stop it from spreading!"

"Surely you can understand why I did it!"

As SCP-049 the Plague Doctor spoke, it began pulling surgical tools from the medical bag it carried, continuing in a remorseful voice:

"But that's all right. One day, I'll find the perfect cure!"

"As a doctor, I can preserve your bodies!"

"Trust me!"

"Once I find the perfect cure for the plague, I'll bring you back to life!"

By the time SCP-049 the Plague Doctor finished speaking, surgical tools covered the ground. Among them was even an Operating Table two meters long and one and a half meters wide.

The viewers stared in disbelief.

What on earth was in that bag? Did it contain a separate space? How else could it hold so many surgical tools?

And weren't those tools a little too filthy?

Not only were they rusted, some still had dried blood and scraps of organs clinging to them.

As the viewers complained, SCP-049 the Plague Doctor began its "surgery."

Then...

The viewers saw something they never wanted to remember for the rest of their lives. They all stood at the pinnacle of their respective worlds and were long accustomed to bloodshed.

Some of the stronger ones could even enjoy a feast amid mountains of corpses without so much as furrowing a brow.

But after watching SCP-049 the Plague Doctor perform surgery, they had to admit they had been naive.

They should never have been so confident in their nerves!

It was revolting!

The revulsion was more than a reaction to what they saw. It was a strange sensation that rose from deep within their souls. Once they had seen the surgery, even when SCP-049 merely moved an arm without thinking...

They still felt sick to their stomachs!

It was practically a causality-based weapon.

[Monster King Orochi: That was disgusting! Since I took on the will of the world and became a monster, this is the first time I've thrown up!]

[Tatsumaki: Ugh! I can't take it. I'm logging off!]

[Orochimaru: That surgery was far too crude. And it calls itself a doctor? I'm going out for some air!]

[Shizune: Lady Tsunade! What's wrong? Don't scare me! Please wake up!]

[Jiraiya: @Shizune, tell me where you are. I'll come find you! My book's been published, too. Even after paying off Tsunade's debts, I've got plenty left! I'll bring you the money. It should be enough to keep Tsunade gambling for a while!]

[Atomic Samurai: So Jiraiya's a lapdog, huh?]

[Inugami: @Atomic Samurai, you got a problem with dogs?]

[Shizuka: @Jiraiya, check your private messages!]

[Kakudo: You can send me your address too!]

[...]

Inside Yanhuang Academy!

The Super Soldiers had vomited until their faces turned white.

Even a battle-hardened soldier like Rose had been violently sick at the revolting sight!

Ordinary people like Ge Xiaolun, Zhao Xin, and Rui Mengmeng had it even worse.

They were so sick they could barely think straight.

Only Qilin managed to hold on. It was not because she had nerves of steel, but because her night with Jiang Chen had given her a natural resistance to anomalies.

Their nerves were not the problem. What they had seen was simply too disgusting. It had pushed everyone past their limit!

And it was not just the super soldiers at Yanhuang Academy. Pan Zhen on Liyang Star, Holy Kesha in the Angel Nebula, and Morgana in Demon Castle had all seen that unbearable sight!

Every one of them was throwing up.

Even their fourth-generation divine bodies could not withstand it.

At the same time, they were all thinking the same thing.

SCP-049 the Plague Doctor, you call yourself a doctor?

Your work is so crude!

Any butcher would have more skill than you.

How is this any different from slaughtering livestock?

As everyone retched and complained, SCP-049 the Plague Doctor finally finished its "surgery." A faintly delighted voice came from beneath its beaked mask:

"The procedure was still somewhat crude, but the surgery was quite successful."

"My treatment really does work!"

"It isn't perfect yet, but I've completely purged the plague from their bodies!"

"And I've preserved their corpses!"

"I'm a genius!"

After hearing SCP-049 the Plague Doctor, the viewers did not know what to say!

You call that "somewhat crude"?

It was beyond belief!

Complaints aside, what interested them most was whether the "treated" Giyu Tomioka, Tanjiro, and Nezuko would come back as the records described.

Would they "revive" as SCP-049-2?

As the viewers watched, Tanjiro, Giyu Tomioka, and Nezuko—who had been erased on a conceptual level by SCP-049 the Plague Doctor—

staggered to their feet.

Their bodies were surprisingly agile, nothing like the shambling corpses in zombie films. If not for their hideous scars and vacant eyes,

no one would have guessed that SCP-049 the Plague Doctor had turned the three of them into SCP-049-2.

SCP-049 the Plague Doctor was pleased with its work.

After admiring them for a while, it said slowly, "Good. The plague here has been cured!"

"But I sense more patients at the foot of the mountain who need our treatment!"

"I can already smell the plague. Such a dreadful odor."

SCP-049 the Plague Doctor paused, then continued, "Come with me and help treat the plague!"

"Let's go!"

With that, SCP-049 the Plague Doctor led Giyu Tomioka, Tanjiro, and Nezuko, now transformed into SCP-049-2,

down toward the foot of the mountain!