Yamamoto Mei: "Three new members joined at once?"
Miyuki Uchiha: "Yup! And two of them are from the same world. AND—one of them is my waifu."
Miyuki Uchiha: "Shinobu Kocho! Shinobu-chan, look at me!! I love you so muchhh!! My butterfly waifuuuu!"
Erina Nakiri: "Here we go again… Is the power of waifus really that overwhelming between girls?"
Kasumigaoka Utaha: "I don't understand the appeal myself, but my light novel 'Miss Shinigami Won't Fall in Love with the Uchiha' sold over 3 million copies. At least half a million people enjoy girl-on-girl waifu pairings."
Kasumigaoka Utaha: "With piracy and the anime adaptation, we're talking several million viewers at minimum."
Yamamoto Mei: "…Why am I eternally bound to this insane Uchiha? Kami-sama… just smite me."
Shinobu Kocho: "…Um… what is this place?"
Esdeath: "Miyuki, you said two newcomers are from the same world?"
Miyuki Uchiha: "Mhmm! Muzan and Shinobu-chan are from Demon Slayer. And then we got Saitama from One Punch Man."
Miyuki Uchiha: "Jaeger-samaaa! Your challenger has arrived! Saitama—the One Punch Baldy!"
Esdeath: "Is he actually stronger than Jaeger?"
Luo Hao: "Finally… someone from a genuinely powerful world enters the arena. One Punch Man… intriguing."
Nerona Jaeger: "…We haven't fought, so I can't say yet. But I'm confident I won't lose."
Saitama's strength was always a mystery—
planetary?
galaxy-level?
or simply… infinite?
But Jaeger knew this:
raw physical strength alone wasn't enough to beat him, especially with the Belt of Hercules enhancing him 24/7.
Saitama: "Oh? Someone stronger than me? Sounds kinda fun."
Saitama: "Anyway… what IS this? Did some weirdo give me a mental group chat?"
Muzan: "Who dares speak inside my mind?! Leave at once, or I will turn you into a demon and torment you for eternity!"
Shinobu Kocho: "Muzan?! Is that truly Kibutsuji Muzan? Is this chat group the work of a god?"
Shinobu Kocho: "Muzan! We, the Demon Slayer Corps, will destroy you! For every victim of your darkness!"
Muzan: "Demon Slayer Corps…? So this bizarre chat is YOUR creation?"
Miyuki Uchiha: "...All your questions are explained in the group announcement."
Miyuki Uchiha: "Also, Muzan—just seeing your name already ruins my mood. So shut it."
Muzan: "Hmph. You lowly human dare insult me? I will devour your flesh and blood!"
Saitama: "...Man, this guy's got a terrible attitude. Is he strong? Whatever. I'll check the announcement first."
Esdeath: "Heh. Let's see if he's still this arrogant after figuring out what this chat group really is."
Luo Hao: "He's irritating. Group chat, can't we just delete him?"
Miyuki Uchiha: "Nope! Rulebook says members can't be killed inside the chat."
Nerona Jaeger: "I wouldn't be so confident."
Nerona Jaeger: "If the chat group dragged two natural enemies into the same space, it probably has a system to keep things… 'balanced.' Just a theory."
Yamamoto Mei: "Whoa… that actually makes a lot of sense, Jaeger-kun!"
Saitama, Shinobu, and Muzan all had completely different personalities.
But Muzan's arrogance was already irritating several members.
Even Luo Hao—the god-slayer—looked like she wanted to flick him out of existence.
Muzan narrowed his eyes, full of suspicion.
"What is this chat group? A new Demon Slayer Corps trick?!"
Curious despite himself, he clicked on a tab labeled:
Memory Copy.
—
Saitama: "So my world's an anime? A manga with an unfinished plot and invincible protagonist flow? No wonder I've never found a decent challenge."
Saitama: "And it looks like we've got a girl who freezes time, a god-slayer, and… some Celestial Dragon dude with ridiculous cheat items. Sounds interesting. I hope we can fight someday."
Esdeath: "Invincible?"
Miyuki Uchiha: "Yup. One-punch-to-solve-everything invincible. Planet-buster punches included."
Esdeath: "...Planet-busting? I can't even process that."
Erina Nakiri: "I thought breaking a building with one hit was already insane!"
Kasumigaoka Utaha: "I have the Pink Dragon form, the Twelve Trials, and Susanoo's enhancement. I might be able to wipe out a small island if you give me a few minutes…"
Miyuki Uchiha: "Senpai is catching up to me! This is the terrifying power of European gacha luck! I'm supposed to be the main character with a system, damn it!"
Yamamoto Mei: "Main character? You're not even C-list. You're like… Uchiha Background-Class NPC."
Miyuki Uchiha: "Says the violent sidekick! You're no better!"
Saitama: "...These women are tiring."
Esdeath: "Heh. For once, I agree."
Shinobu Kocho: "Everyone… I've finished reading the memory copy of my world, and I checked the group announcement as well. May I ask… am I allowed to post a task?"
In the Demon Slayer world,
Shinobu stared at the glowing chat group interface with trembling hands.
For the first time in years—
she felt something like hope.
A reincarnated Celestial Dragon who controlled divine lightning and Noble Phantasms.
A woman who fought—and killed—gods.
A novelist-turned-miracle-warrior blessed by impossible luck.
A bald man who punched planets apart like styrofoam.
If people like this truly existed…
Then maybe—
just maybe—
her world could be saved.
She had seen every memory the chat group showed her.
Her friends dying.
Her sister dying.
Demons running rampant.
Villages wiped out.
Innocent families broken beyond repair.
All that helplessness.
All that despair.
But now—
she had a chance.
She had to act first.
She had to.
Because Muzan was here too.
He had also watched the memory copy.
He now knew the future.
He now knew every tactic, every trap, every weakness the Demon Slayers ever used.
Shinobu's heart pounded.
She wasn't just fighting for herself anymore.
She wasn't just fighting for the Demon Slayer Corps.
She was fighting to stop Muzan—
before he could adapt.
If she faltered for even a moment…
He would strike first.
She wouldn't let that happen.
She couldn't.
Shinobu clenched her fists, eyes sharp and determined.
She had to move before the Demon King did.
Her world depended on it.
Miyuki Uchiha: "Sorry, Shinobu-onee-san. Even though I adore you, missions can only appear when the chat group itself allows it. We can't create them manually."
Sakura Tosaka: "Right. Even someone as strong as Jaeger-nii can't force missions to appear. It's completely random."
Luo Hao: "Oh? Sakura can't go three sentences without bringing up Jaeger"
Sakura Tosaka: "W-What?! Jaeger-nii is just… reliable! He saved me!"
Shinobu Kocho: "If we're talking about missions… I believe the chat group has already authorized me to post one. [Image]"
[Mission: Kill Muzan]
Objective: Eliminate Kibutsuji Muzan.
Additional Requirements: None.
Time Limit: 1 day
Participants: 3
Reward: Demon Slayer World Special Lottery (1 draw)
Miyuki Uchiha: "Ehh?! Shinobu-chan just joined and already got mission privileges?! That's insane luck!"
Yamamoto Mei: "Also… the target is another group member?"
Kasumigaoka Utaha: "Looks like you were correct, Jaeger-kun. The chat group doesn't pull enemies together by coincidence."
Esdeath: "Fufufu~ Excellent. Muzan, was it? Humans aren't weak — they only act weak when they cower."
Erina Nakiri: "…That's the most Esdeath-like line I've ever heard."
Demon Slayer World —
Kibutsuji Muzan, the so-called Demon King, who always wore his arrogance like a crown...
—was trembling.
His pale face had drained of all color.
His elegant composure shattered.
His pride, his cruelty, his disdain… all crushed beneath the weight of a new terror.
The chat group.
Before panicking, Muzan had used the free lottery spin all newcomers received.
He'd drawn a Zanpakutō — an illusion-type blade of terrifying power.
At the time, he had been pleased.
Excited even.
He believed it would make him unstoppable.
But now?
It was nothing.
Absolutely meaningless.
"Heroic Spirits… Godslayers… beings who freeze time, divine dragons, weapons that destroy stars… and that bald demon king?!" Muzan's mind spiraled in shock.
They weren't myths.
They weren't exaggerations.
The memory copies proved they were real.
He had never felt fear like this.
Not even when Yoriichi nearly killed him.
Back then, he feared death.
But now?
He feared something far worse:
Insignificance.
Compared to these monsters, Yoriichi looked like a child swinging a toy sword.
Then Muzan saw it—
A mission.
A mission posted by Shinobu Kocho.
A mission with one, simple objective:
Kill Muzan.
For a moment, the Demon King forgot how to breathe.
His body reacted before his mind could —
Splitting into dozens of pieces in primal panic.
He had never been so terrified in his entire existence.
But then… hope.
A flicker of salvation sparked in Muzan's mind.
Missions… right!
If Shinobu could post one—then so could he.
Hands trembling but eyes burning with defiance, Muzan copied her example and created his own.
Muzan: [Screenshot]
[Mission: Destroy the Demon Slayer Corps]
Objective: Eliminate the Demon Slayer Corps. No restrictions. Complete freely.
Time Limit: 7 days
Participants: 3
Reward: Demon Slayer World – Special Lottery Ticket
Muzan: "See? I can post missions too!"
Muzan: "My power far surpasses the Demon Slayer Corps! Join me, and we'll annihilate them easily!"
Muzan: "I am the immortal Demon King! I can grant you eternal life—surely none of you would refuse such a gift?"
The chat group instantly lit up with responses.
Esdeath: "Fufufu… how interesting. So both sides can issue missions?"
Jibril: "Ahahaha! This is delightful! A true holy war between predator and prey!"
Luo Hao: "Personally, I favor that little girl—Shinobu Kocho. She has elegance, humility, and grace. Unlike you."
Miyuki Uchiha: "Agreed! I'd rather help Shinobu-chan than some creepy vampire uncle."
Yamamoto Mei: "Same. Ghosts and bloodsuckers are gross. Demon Slayers are way cooler."
Sakura Tosaka: "Sakura thinks Miss Shinobu is much more likable…"
Nerona Jaeger: "Beautiful women > ugly monsters. Simple math."
Shinobu Kocho: "Muzan, you vile creature! I won't let you destroy the Demon Slayer Corps!"
Shinobu Kocho: "Everyone… I won't force anyone to help me. But I'll share my world's memories with you. Watch them. See the truth for yourselves—then decide who deserves your aid."
Ding!
[Notification: Group member Shinobu Kocho has uploaded a Memory Copy of the world "Demon Slayer." All members may view it freely.]
For a moment, the chat group fell utterly silent.
Then—
Luo Hao: "The chat group has a function like that?"
Yamamoto Mei: "I've never seen anyone use it before."
Miyuki Uchiha: "Makes sense. Who would willingly expose their entire life? But thanks to Shinobu-chan, we all just witnessed Muzan's true nature."
Saitama: "Wait… so Muzan's actually the bad guy?"
Miyuki Uchiha: "Absolutely. A cowardly, manipulative, tantrum-throwing demon baby. Just watch the memories—you'll see."
Shinobu Kocho: "Thank you, Miyuki-san…"
Miyuki Uchiha: "No need to thank me, Shinobu-chan. Any decent person would feel disgusted by Muzan."
Muzan: "Lies! Nonsense! Her memories are fabricated! Twisted illusions meant to slander me!"
Back in the Demon Slayer world, Muzan clenched his fists until his knuckles cracked.
His sins—every atrocity he'd committed over centuries—were now exposed.
Laid bare in front of beings far beyond his comprehension.
His carefully crafted image of elegance and terrifying nobility?
Shattered.
The reincarnator girl—Miyuki Uchiha—dug through his past like a detective peeling back a rotten mask.
And the more she revealed, the more fragile his pride became.
Desperate, furious, he tried to scheme:
If I gather the Twelve Kizuki…
If I manipulate the narrative…
If I create a false drama and frame the Demon Slayers as villains—perhaps…
But it was too late.
His story wasn't his to control anymore.
The truth was out.
And now he was no longer the hunter—
but the cornered animal.
A criminal awaiting judgment.
And he wasn't surrounded by demon slayers…
He was surrounded by monsters far worse:
The monsters of the multiverse.
•••
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