Somewhere in themountains, hidden between jagged cliffs andsheer insanity,Raja’s ultimate fortress stood tall and mighty. It wasn’t just a fortress—it was amonument to pettiness, designed for thesole purpose of trolling Muzan Kibutsujibefore his inevitable demise.

Amassive stone mazestretched out for miles, lined withmagic traps,illusory dead ends, andsigns that only got more ridiculous the deeper one ventured in.

At theentrance, alarge wooden signread:

🚫"No Demons Allowed – By Order of the Little Lord."🚫

In smaller text below:

"Violators will be severely disappointed and publicly humiliated."

TheKing of Demons, Muzan Kibutsuji,stood at the edge of the fortress, staring at theabsolute nonsense in front of him. Hisplum-red eyes twitchedas he scanned theunholy combination of medieval castle, ancient labyrinth, and kindergarten humor.

"What... in the accursed name of Yoriichi is this?"

Muzan, inall his glorious villainy, expected adramatic entrance. Afateful clash. Maybe somedramatic chanting in the background.

Instead?

He got aglorified theme park designed to annoy him.

The Shadow Ninja guards, positioned atevery corner, simplystared at him with smug satisfaction,not moving—as if they hadalready won.

Muzan took adeep breath.

No, Kibutsuji Muzan does NOT get angry at walls.

Heentered the fortress, gliding through thelabyrinth like a final boss—only tostop every five minutestoread the taunting signs left behind.

🪧"Did you seriously think it’d be that easy?😂"

🪧"Turn back now, Muzan. Your mom says dinner is ready."

🪧"If you’re still reading this, I’m billing you for the entertainment. – Raja"

Aftertwenty minutes of suffering, Muzanfinallyreached thecenter of the fortress—a grandopen-air chamber, lined withHashira, all staring at him with thekind of bloodlust that makes demons nervous.

At the center of thearena, sittingcasually on a throne, wasRaja.

Aglass tube containing a Blue Spider Lilytwirled in his fingers as he leaned back, lookingas smug as humanly possible.

Behind him?

Anentire garden of Blue Spider Lilies,gently swayingin the night breeze.

Muzanstared in utter disbelief.

"You... You dare..."

Raja raised an eyebrow, taking adramatic sip from an empty gobletjust toannoy him further.

"Oh? What’s wrong, Michael Jackson? Lost for words?"

TheHashira chuckled, and Muzan’splum-red eyes flickered with rage.

Just as Muzan was about todeliver his villainous monologue,Tamayo-san stepped out from behind Raja, gracefullygrabbing the tube from his hand.

Muzan’sface contorted in sheer betrayal.

"Tamayo... YOU!"

Before he couldprocessthisunforgivable insult, Muzan suddenly felt aburning sensationat theback of his head.

BANG!

Genya, thestealthiest, most unhinged ghost boy,materialized from the shadows, holding hismodified Desert Eaglewitha smug grin.

"Surprise, motherfu—"

Muzanstaggered forward, clutching his head as thevirus-infused bullet burrowed into his cells.

Hisbody convulsed, hisflesh writhingunnaturally.

Theentire fortress watched in complete silenceasMuzan Kibutsuji, the most feared demon in existence, fell to his knees.

For thefirst time in centuries, Muzan felt...pain.

And hedid not like it.

"W-What is this?!"Muzanhissed, his voice laced withpure, unfiltered hatred.

Rajagrinned.

"Oh, nothing much. Just a little something from Tamayo—her own personal ’anti-Muzan’ virus."

TheHashira smirked, watchingMuzan clutch his head in agony.

Gyomeiwiped a single tear."Truly, divine justice."

Sanemilaughed."Damn, I wish I had recorded that!"

Muzanstood up, his body stillreeling from the virus, but hisaura intensified—deadlier than before.

"You will all pay for this."

Raja yawned.

"Yeah, yeah, sure. Anyway... ATTACK!"

Themoment the Hashira lunged—

A massive door suddenly appeared under them.

And just like that—

The Infinity Castle swallowed them whole.

Muzanvanished into the darkness, andthe entire Demon Slayer armywasscattered across the castle, each facing theirgreatest enemy.

With a singlesnap of his fingers, Rajaactivated his divine sense,locking onto every demonin the castle.

Then, with anothersnap—

Everyone was instantly teleported to their destined fights.

⚔️ The Match-Ups Are Set!

Upper Moon 1–Kokushibo vs. Gyomei & Muichiro

Upper Moon 2–Doma vs. Rengoku & Inosuke

Upper Moon 3–Akaza vs. Giyu & Sanemi

Upper Moon 4–Nakime vs. Kanae & Mitsuri

Upper Moon 5–Hantengu vs. Obanai & Tanjiro

Upper Moon 6–Gyokko vs. Tengen

Upper Moon 7–Kaigaku vs. Zenitsu

1000-Monster Horde–Shinobu, Genya, Kanao & Shadow Ninjas

Each fighterstood face-to-face with their opponent, their weaponsgleaming under the eerie glow of the Infinity Castle.

And in the center of it all—

Raja and Muzan stood alone.

Muzan’seyes burned with hatred.

"You have meddled for the last time, human."

Raja simplycracked his knuckles.

"Nah, I’m just getting started, Mikey."

And with that—

The battle for the fate of the world was about to begin.

🔥To Be Continued...

Source: Webnovel.com, updated by lotustale.com