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The world of Demon Slayer had finally found peace.
Not a single hero had fallen. Everyone survived.
It was, without question, the most perfect and complete ending one could ask for.
Watching good people finally receive a well-deserved happy ending—there was no greater satisfaction.
...
In the world of One Piece…
The Straw Hat crew gathered on deck.
"Hehehe! That's awesome! Tanjiro and the others all made it out alive!" Luffy laughed, sitting proudly atop the Sunny's lion figurehead.
"Miss Shinobu, Mitsuri-chan, everyone's safe! What a relief!" Sanji sobbed dramatically, a handkerchief at the ready.
"Think we'll ever run into them at sea someday?" Usopp asked dreamily, eyes sparkling with imagination.
"The Demon Slayer Marks and those red blades… I'd love to spar with them," Zoro said, his grin sharp as his swords.
...
At Marine Headquarters…
"Once this war with Whitebeard ends, we'll start a worldwide recruitment drive," declared Fleet Admiral Sengoku, his tone firm and commanding. "Whether it's the Demon Slayer Corps or that Escanor fellow, they must be brought in! They're the future of the Marines!"
"Now, now, calm yourself, Sengoku. There's something I've been meaning to tell you," Vice Admiral Tsuru said, ever serene.
"What is it?"
Sengoku blinked in confusion.
"It's about the worlds beyond ours. The Demon Slayers, Escanor… they aren't from this world. They're from other worlds entirely."
Her words carried an eerie calm.
"Nani?!"
Gasps filled the room. The top brass of the Navy were in shock.
"Well, that's just my personal theory," Tsuru added. "But let's see what the next ranking reveals."
"Right. Let's continue—the next heroes are about to appear!"
...
In the world of Naruto…
"Man, it's great that Tanjiro and everyone survived. Really makes me happy!" Naruto grinned brightly.
"With all the demons gone, maybe those fools up top will finally give up their obsession with immortality," Tsunade murmured, sipping her sake.
In the past two days, the daimyō of the Land of Fire and his officials had issued over a hundred bounty missions to capture "demons."
Their real aim was obvious—they wanted Muzan Kibutsuji's power, the secret to eternal life.
Not just Konoha; the other shinobi villages had received similar orders.
Now that Muzan was dead and the demons wiped out, there was no longer a reason to carry out such insane tasks.
"Besides," Tsunade said, "no one even knows where the Demon Slayer Corps came from—or if they even belong to this world at all."
"Raikage-sama! A new hero ranking's just started!"
...
Back in the Demon Slayer world…
Amid the ruins left by the great battle—
"Uuuuh… Nebula-san and Mr. Escanor just left like that! We didn't even get to thank them properly!" Mitsuri Kanroji wailed, tears streaming down her cheeks.
"They finished their mission," Shinobu said softly, patting Mitsuri's back. "Naturally, they had to go."
"I wonder if we'll ever see them again," Tanjiro murmured.
"We will," said Kagaya Ubuyashiki with quiet certainty. "I believe we will."
"There's still much work to be done," he added gently, "but for now… let's relax and watch the next world's heroes."
"Whoa, whoa, whoa! A new ranking! Think we'll make it this time?"
In the Fairy Tail world, Natsu was practically bouncing with excitement.
"No doubt about it. Sensei Saitama's definitely going to be on the list," Genos said confidently in the One Punch Man world.
"There's no way the Avengers aren't ranking this time!" Tony Stark declared, arms crossed, smug as ever.
Across the multiverse, countless beings watched in anticipation.
And finally—
...
The No.9: Behind-the-Scenes Heroes Ranking began.
"Just as people decay, so too do nations eventually rot and fall."
"The empire that flourished for a thousand years has become nothing more than a corrupt hell on earth."
"Monsters wearing human skin now rule unchecked, drunk on their own arrogance."
Line after chilling line appeared across the screen.
Then came the images—scenes so dark and grotesque they rivaled demons devouring humans.
But this time, it wasn't monsters eating people.It was people eating each other.
The once-proud empire had decayed beyond saving.
The emperor was now a puppet, dancing to the strings of manipulative ministers.
A witch-general waged endless wars for her own amusement.
Officials lined their pockets with bribes while the innocent starved.
Corruption spread like disease—officials framed the loyal, nobles exploited the weak, and wicked courtiers committed unspeakable atrocities just to please their masters.
Scene after horrifying scene flashed by, leaving the viewers of countless worlds furious—and chilled to the bone.
Compared to demons, the true terror lay in the hearts of men.
In a way, this "human cannibalism" was far worse than any demon attack.
"Damn it! Those scumbags deserve to die a hundred times over!" voices roared across the worlds.
"This country is pure hell!" cried King Cobra of Alabasta, tears streaking down his face.
"The ones who control the court, the dogs that serve them—they should all be executed to the ninth generation!" thundered Zhu Yuanzhang, his fury palpable.
"Zhao Gao," said Emperor Qin Shi Huang coldly, "you'd better not have any such ambitions."
Across the multiverse, kings and rulers alike were enraged—hearts burning with righteous anger, wishing they could march their armies straight into that empire and liberate it.
Finally, the scenes of despair faded.
"If heaven itself cannot punish evil…"
"…then we shall strike it down in the shadows."
New text appeared, bold and defiant.
Then—figures emerged.
Young women, sharp-eyed and deadly beautiful, stepping into the moonlight.
Men across the multiverse leaned forward, their gazes caught by the fierce grace of these assassins.
Clang.
Slash.
Thud.
Blood sprayed across the screen, crimson under the moon.
No one turned away.
Instead, cheers erupted.
Because the girls weren't killing innocents—they were delivering justice, cutting down the wicked who had long escaped punishment.
The screen froze.
Under a blood-red moon, they stood together.
Night Raid.
"We are the professional assassins of the revolution!"
"..."
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