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blood is thicker than water by lesbianpilled
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
25 Jul 2026
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Summary
Kokushibo nudges his head with his own fingers, and Muichirou’s eyes close as he falls unconscious.
He hears a gasp from behind him.
The brat is still alive, and he seems shocked. He looks downright furious, likely because Muichirou was his friend or something equally trivial as that.
He doesn’t have time for this. He really doesn’t.
So he leaves the faux-demon alive and gently picks his descendant up.
The next second, the Mist Pillar and Upper Moon One are gone.
Or, Kokushibo and Muichirou meet before the Infinity Castle Arc. Kokushibo is very interested in his descendant becoming a demon. Muichirou is not.
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Currently editing/expanding Chapter 2
Next update: 8/8/2026
Most recent update: 7/25/2026 - Chapter 5
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The Demon King Crafted from Sunbeams by Passing_Ghost_Friend
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
22 Jul 2026
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Summary
When Kamado Tanjiro goes out to sell coal for his family, he does not return. And a harsh winter storm blocks the family from going out to check on him.
Tomioka Giyuu arrives late to the mountain with his sword ready to destroy any demons. Yet what he finds is neither human or anything like the demons he has encountered before.
This presence feels heavier yet he can’t detect any murderous intent or smell of blood on him.
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AKA The AU where Muzan messes up and makes Tanjiro a demon king and his worst nightmare.
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Light of the Moon by BlackRose1806
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
26 Jul 2026
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Summary
“The worst was what wasn’t there. Every accomplishment, every good thing Yoriichi had ever done, that Kokushibo could ever remember him doing. None of it had made it into this book.
His little brother’s self-loathing was etched into every page.
Why? Why had Yoriichi thought so little of himself? How could he not see all the good he’d done?”
Or:
On the day of Kokushibo and Yoriichi’s fight, Kokushibo finds a journal tucked away beside the flute he’d made for Yoriichi.
It changes everything.
Series
- Part 1 of Light of the Moon
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Iron and Ice by SkilledWarriorKiwi
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
06 Apr 2026
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Summary
The girl wasn't afraid but she had not been given permission to speak so she said nothing. The man tilted his head to the side, smile fading to a confused pout.
"Aren't you going to scream?" he asked.
The girl said and did nothing.
His hand tightened around her throat, strong enough it cut off her breath. She did nothing, even when her vision began to blacken as her lungs struggled and twisted from the lack of air. After a moment his hand relaxed and she took a breath, but made no attempt to push away from him or fight his grip.
"That's strange," the man said, "Are you really not afraid?"
She blinked but did not respond. His hand loosened around her throat until he was pressing his bloody index finger against her neck, sensing her pulse. It was as steady and calm as it had ever been since that day she became empty and hollow.
"Well, aren't you interesting. I think I'll keep you," the man decided.
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The cruelest king in the history of kings by Turtle_T
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
14 Jun 2023
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Summary
Kamado Tanjirou was the light in Tomioka Giyuu’s worthless existence.
He was like a brother Giyuu never had.
So, instead of responding to this hunger that came with becoming a demon, Tomioka Giyuu grabbed his little brother and run as far away as he possibly can, without succumbing to the hunger, with him.
Even Giyuu was surprised when he did that.
(Tanjiro is a demon here)
|Chapter one edited. Added more plot points and details.|
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Kimetsu no Kansatsu by A_Non_ymousWriter, Kevin_IBW
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
31 Mar 2026
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Summary
Nearly a year after the death of the demon king and the demon slayer's disbandment, before a planned reunion Kamado Tanjiro and Tomioka Giyuu are suddenly, accidentally, pulled from their world into a world where both their lives and the lives of everyone they knew is different.
All the demons were human (the demon king included), all the slayers alive, and the world in a completely different era from theirs with everyone living 'normal modern lives'.
Not only that, but they're forced to observe and experience Tanjiro's perspective as a demon slayer; reframed as an 'anime' (whatever that was). Trapped in a school during a blizzard, they can't do anything else but Observe.
Meanwhile, Kimetsu Academy and a few others experience the wildest, most chaotic and possibly most stressful blizzard ever; being forced to watch a world where demons were real and the politician stuck in the school was a demented demon king. More and more taisho-world versions of themselves appear throughout the summons and things just go off from there.
Aka; Modern Kimetsu Academy world watches Kimetsu no Yaiba with Post-KNY characters AND actual KNY characters.
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What You Wish For by KuriKuri
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
08 Feb 2026
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Summary
A face that Giyū hasn’t seen in eight years looks down at him and twists itself into an expression that Giyū’s never seen before.
“I won’t ask twice,” Sabito says. “What kind of demon are you?”
“Sabito?” Giyū asks. His voice is barely louder than a whisper.
(Or: Giyū gets sent to a timeline where he's dead and Sabito's alive. It's not what he expected.)
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and the sun sets by dangerouswoman
Fandoms: 鬼滅の刃 | Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
13 Jun 2020
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Summary
“Nezuko,” he began, getting her attention. Pink eyes with slit pupils met his own, filled with tears. Unlike their past meeting, there were no growls tearing her throat as he approached her, nor bared fangs. Hitching breaths shook her small frame; drool slipping past her muzzle. Prominent veins strained in her forehead as she stared at the body before her, but she looked disgusted with the blood that stained her hands. Body stiff, she turned towards him. “We need to leave before the sun rises.”
Or, Nezuko didn't wake up in time to save Tanjiro from Rui's web that day on Natagumo mountain. Giyuu can't bring himself to leave her all alone, so he tries to take Tanjiro's place in the Kamado siblings' search for the cure.
Series
- Part 1 of and the sun sets
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Summary
When he fought, it was as if fate hummed in agreement, nodding along as he spilled Death Eaters’ blood—as if it were a sacrifice. His magic buzzed and thrummed with power, as though fate itself were lending him strength he had never possessed. But the cost was his own life. His tragic death became the ultimate sacrifice that pleased fate.
But just as death freed him from vengeance and fear, fate dragged him back to fulfill the vow he had carelessly sworn on the battlefield.
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Fire To Water: A Father's Wish by RarepairKai22
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
26 Dec 2025
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Summary
Midoriya Hisashi, to most people, has a fire-breathing quirk and is working overseas to support his family.
Not as a mere pencil-pusher in some corporate office, though. Rather, an established pro-hero who was sent abroad as part of a mission to take down a cult hell-bent on overthrowing the American government.
However, when the operation goes wrong, Hisashi is mortally wounded. In his final moments, he makes a wish, for his beloved, hero-loving son, who has yet to manifest his quirk, to be able to achieve his own dreams someday.
Across the globe, young Izuku is defending a peer from being bullied by Kacchan and his lackeys. When he becomes the target, a wish made by the father he never knew is fulfilled.
Fire becomes water, a father’s love transcends time, space, and life itself, and Izuku rises like a dragon soaring to the heavens, wielding the power of storms and wind, opening the pathway to his own form of heroism.
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metanoia by wistfulpetrichor
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
27 Apr 2026
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Summary
In one universe, Giyuu doesn’t make it in time and Nezuko becomes a demon.
In another universe, Giyuu makes it three days early and becomes a demon instead of Nezuko.
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(Basically a canon rewrite where Giyuu is a demon and Tanjiro is trying to find a cure for him.)
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Water Woes by Little_Green_Her0n
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
21 Apr 2026
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Summary
"He was alive.
The realization struck just as a sharp breath dragged through his lungs, then the coughing began. Violent. Wet. He doubled over, spitting blood into the snow.
What… happened?
Hair plastered against his cheeks, Giyuu brought a shaking hand to move it away, before scrubbing at the blood sticking to the skin of his eyelids.
Giyuu curled a hand to his chest and pushed off the ground.
Pain exploded within it.
Ribs cracked beneath his weight and he crumbled. Collapsing into himself, he held back a scream."
Or) Giyuu is hurt and someone follows the bloody trail.
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triple sunrise by MinuteSpecific_lostacc
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
20 Apr 2026
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Two people don't sleep the night Muzan comes.
That changes everything. -
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Summary
A story about a dead princess and a banished prince, a pirate and a traitor, the sun and the moon; unable to return home, charting the stars in their journey to find a new one. Yue and Zuko.
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Tezcatlipoca seemed to have been reincarnated into this vile man. But it couldn’t be, for even he was not as cruel, not as evil so as to try and murder an innocent child.
Agni would not stand for this.
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Before the time of the Avatar the spirits danced. As the humans grew, they learned from the dances and eventually made it their own. They gained the gifts of elements from the spirits who fell in love with their dance. In order to keep balance between those with different gifts, the Avatar was not the only spirit that moved through humans. The spirits of the major elements also bonded themselves to a human vessel, much like the Avatar spirit. That souldbonded human was to serve as the link between the great spirit and the human world. They were also meant to be the teachers of the Avatar to assist in keeping balance in a world full of wonder and power.
That was true, until everything changed when the Fire Nation attacked.
Series
- Part 1 of Spirits Blessed
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Summary
Whatever your soulmate writes, you can read on your own skin. A bond always connects four people. The “perfect” bond, they say, links one person from each of the four nations.
But the Air Nomads are gone. No wonder Zuko’s bond doesn’t include one.
It’s a shame there isn’t anyone from the Fire Nation, either.
Or: Zuko, Sokka, Suki, and Yue are soulmates. Zuko ignores the bond. Then, Yue learns who their missing soulmate is, and Zuko decides Sokka and Suki must never know.
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Teruki hanazawa’s guid to getting adopted by the greatest psychic of the 21st century by Batmanizcool4ever
Fandoms: モブサイコ100 | Mob Psycho 100
06 Jul 2026
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Summary
Teruki hanazawa had it all good looks perfect grades, and anything else he could want. Everything is great until claw attacks burning everything he holds dear to the ground.
Basically Teru gets adopted by Reigen and him and mob eventually get together. I’m bad at summaries
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On the Level by nolongersun
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
26 Jan 2026
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Summary
Giyuu is really nothing more than a seat warmer for a more competent water pillar to come along someday.
When he saw Tanjirou wield his family’s axe and defend his sister, he saw potential. In the short amount of time he spent observing Tanjirou, he saw many things in him. Kindness so genuine it took him aback; concern for others that made the world a little sunnier; and a sense of justice so strong it reminded him of a boy with peach hair. Tanjirou was strong, and he would only become stronger as he grew. He would make a great pillar one day, with some years of training and experience under his belt.
But if all his years spent as not only a hashira, but also as someone who was raised in a world where demons attack the innocent, it had taught him one thing and one thing only— the world was dangerous for kind people.
The idea of giving Tanjirou his spot as a pillar of the demon slayers organization makes him slightly nauseous.
Tomioka Giyuu, if he played a more active part in helping the Kamado siblings after he spared their life.
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One Night too Early by II_Black_Sparrow_II
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
13 Jul 2026
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Summary
Kanzaburo was famous, or rather infamous, for being slower than most crows due to his age, yet he was very eager. One day he was particularly fast to send Tomioka Giyuu, the Water Hashira onto a mission.
The mission was located at Mount Kumotori at a small village; allegedly lots of people have been going missing near that area. Perhaps it'd be a Lower Moon. No big deal for a Hashira like Tomioka, even if he was the worst one of all of them.
Now something that was a challenge, even for the best of Hashira, was facing the demon king himself all alone.
// DISCONTINUED \\
[THIS WORK IS RATED EXPLICIT FOR GORE AND VIOLENCE]