1 - 20 of 110 Works in Kokushibou | Tsugikuni Michikatsu-centric
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the promise he kept by Soulxz
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
29 Jan 2026
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Summary
douma shabana was once a cheerful high schooler, bit his life fell apart when his ex best friend, hakuji began bullying hima after his father as passed, betrayed and isolated douma's pain twisted into hatred, the only person who noticed douma suffering was michikatsu / kokushibo, also hakuji best friend kokushibo fell inlove with douma and became his emotional support
driven by revenge, douma murders koyuki to make hakuji suffer and promised kokushibo once it was done they would leave together, though kokushibo didn't understand douma he stayed with douma, but douma has changed,, after keeping his promise, douma abandoned kokushibo and ran to start a new life where killing became in enjoyment instead of revenge
where would the story end? hakuji with his pay back? or somewhere along the line kokushibo helps douma?
- Language:
- English
- Words:
- 4,755
- Chapters:
- 1/3
- Hits:
- 7
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暗夜独行｜Alone in the night by aflowerinthefuture for TeaPartyCannon
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
26 Jan 2026
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Summary
黑死牟知道，将眼前的男孩直接变成鬼会来得更加轻松。他已经失去了他的家人、记忆乃至自我；就算化身为鬼，也不会有什么可失去的了。但黑死牟始终秉持着一个理念：唯有修习过呼吸法的人类，才能蜕变为掌握呼吸法的鬼。然而目前，不管是从能力还是心智上讲，他都只是一个孩子。在时机成熟以前，他必须以人类的身份活下去。
但是，距离黑死牟上一次照顾人类孩童，已经过去了将近四百年。上一次体验为人父也已是遥远的往事。而以他此刻的生疏程度，简直显而易见……
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在一个宿命之夜，濒死的重伤少年无一郎，没有被天音和鬼杀队寻获，反而是落入了上弦之一·黑死牟的手中。从这一刻起，一切都改变了。 -
Alone in the Night by TeaPartyCannon
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
24 Jan 2026
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Summary
Kokushibo knew it would be easier to just turn the boy into a demon now. He had already lost his family, his memory, and even his own identity; there was nothing more that becoming a demon could take from him. But Kokushibo’s theory was that only a human who was trained in the art of Breathing could become a demon capable of Breathing, and the boy was still so far from his peak of strength and maturity. Until the time was right, he would have to remain human.
But it had been almost four hundred years since Kokushibo had last cared for a human child. Since he’d been anything close to a father. And it was very, very apparent just how out of practice he was…
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One fateful night, an injured Muichiro on the brink of death is found not by Amane and the Demon Slayer Corps, but by the Upper Moon One, Kokushibo. This changes everything.
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What's real or not? by Sm0lb3tch
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
24 Jan 2026
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One day when returning from a battle, a small group of samurai led by the current lord of the Tsugikuni clan encounter a wounded teenager holding a katana with a black blade.
The boy's appearance creates questions, and his answers raises more than answers any—leaving the family with a confused child whose origins are but a mystery.
-OR-
Tanjirou gets sent to the Sengoku Era due to a Blood Demon Art. This causes things to change, for things to end differently—and for one man's heart filled with jealousy to become warmer.
Series
- Part 1 of KNY fanfics
- Part 1 of Kokudad & Tanjison
- Part 1 of KNY AUs
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It's Hard Work Being an Evil Politician's Secretary! by Tenshies
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
22 Jan 2026
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Summary
A continuation of Kimetsu Academy, with Kokushibo as the protagonist. Kokuzan-centric but not limited to that. It's esentially other side stories or interactions I would've liked to see in the Gakuen manga.
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An Unlikely Friendship by gromash_enjoyer
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
18 Jan 2026
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Summary
Upper Moon One is sent on a mission to infiltrate the Demon Slayer Corps, and is tasked by Muzan to befriend the Love Hashira, who in their eyes is the most gullible and naive target. After spending more time with her and the other Hashira than he's willing to admit, he realizes that he sees them as actual friends, and not just tools to find the Ubuyashiki estate.
When the arrival of a certain boy wearing Hanafuda earrings changes everything, will he attempt to stand up to the one he's been following for centuries, or will he stay loyal to his master and carry out his mission to the end? -
Remember by Ruiniel
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
18 Jan 2026
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Summary
"...and I can't remember my wife's or children's faces..."
—KokushibōTaishō era, 1915. A lonely young woman's life changes after a strange encounter where the surface of a hidden world is revealed. A story of contrasts.
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Desecrated Snow by Juzz266
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
16 Jan 2026
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Summary
Returning to Douma had always been easy; he was never far away. Beneath the moonlight, surrounded by death or by people kneeling at his feet, Douma would stretch his arms forward and beckon Kokushibo to come closer. Hidden within the dark.
He still seemed far too human, an inhuman boy.
The Upper Moon Six.
“Did you come to visit me?” Douma asked, his hands crawling up along his loose sleeve, and higher still. “Because I came to see you.”
And so Kokushibo would find him again each time—always in the same place, desecrated under the same moon and buried in the snow.
Or, Kokushibo and Douma, through the years.
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Die for Me by Lady_Sparti
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
11 Jan 2026
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Summary
Michikatsu’s eyes darkened as something seemed to glint in the sunlight ahead.
He approached warily and blinked.
It was a spider lily, shining with droplets of morning dew. The only thing was that it was a moonless black colour, not at all like the instantly recognisable red blooms that grew near cemeteries and burial grounds. He raised his brow at the flower; something told him to walk away, yet he could not bring himself to tear his gaze away.
Without meaning to, his hands reached out and plucked the black spider lily out of the ground before continuing his walk home, analysing the strange yet fascinating flower. He knew that normal spider lilies had a citrusy smell that was minimal at best, yet this blossom held an alluring sweet smell that lingered in his nose much longer than any usual flower.
“How strange...” the resentful Moon Hashira commented, placing the bloom into his inner kimono pocket and carrying on to his home.
Series
- Part 10 of Twisted Desires (MichiYori Smut Drabbles)
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"But I for one couldn't have stopped it if I tried," -Kokushibo by Nendos_LeftEyelash for cloveliest
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
06 Jan 2026
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Summary
Kokushibo gets period cramps and remembers nakime telling him that if he orgasms he will be relieved of cramps for a bit so he asks giyuu to get in pls <3
for the sake of the fic, demons get periods no matter what they do to their cells, as long as they had ova while they were turned.
Also I wanted to write them paralleling the scene with katniss and peeta with the "stay with me" "always" line
- Language:
- English
- Words:
- 1,688
- Chapters:
- 1/1
- Kudos:
- 7
- Hits:
- 230
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You Look Quite Divine Tonight, Here Among These Vibrant Lights by CressidaMoonveil_AOA
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
05 Jan 2026
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Summary
The drawing of Kokushibo and Giyuu together was normal at first glance, before he noticed they seemed to be… a little too close. Both of them also seemed to be fairly disheveled, not to mention the…
…Oh.
OH!
_
Or, Kokushibo takes Giyuu back home after getting injured during their outing. Once he was done making sure Giyuu was comfortable, he goes to put a few things away, only to stumble across something a bit more than shocking. Perhaps even a little arousing.
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To Gaze Upon the Sun Again by nanashi2911
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
04 Jan 2026
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Summary
Hurled back through centuries at the moment of his death, the mighty Upper Moon One awoke not as a demon, but as a weak, human boy. He was staring at the origin of his ruin, and his reaction to his perfect brother wasn't rage—it was nausea.
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Nighttime cuddles by Braixen434
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
03 Jan 2026
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Summary
In that small corner of the world, there was no war, no painful past. Only two beings, finding in each other’s embrace the only peace fate allowed them.
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❄️𝓐𝓼 𝓽𝓱𝓮 𝓼𝓷𝓸𝔀 𝓯𝓪𝓵𝓵𝓼❄️ by Braixen434
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
27 Dec 2025
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Summary
Outside, the snow kept falling. Inside, there was only warmth, peace, and a love worth preserving.
- Language:
- English
- Words:
- 735
- Chapters:
- 1/1
- Kudos:
- 6
- Hits:
- 73
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I was born waiting by AnachronisticAuthor
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
22 Dec 2025
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Summary
Michikatsu manages to resist Muzan's control after the death of his brother. Now he simply wants to travel across Japan and expand his knowledge. Unfortunately, Yoriichi's reincarnations don't seem to get the memo.
(But to be fair, neither does a lot of people.)
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Stupid love by Theonewhoknocked
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
19 Dec 2025
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Summary
Modern au where Kokushibou and Doma are slowly getting together?? Possibly. Maybe Kokushibou likes someone else but who knows, doesn't mean it's over.
It's a little one sided at Doma’s part
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Sombras del pasado. by Annye_Mz
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
10 Dec 2025
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Summary
Sukuna había aparecido de la nada. No le agradaba. No le agradaba como parecía tener un lugar asignado cuando en esos quinientos años que llevaba sirviendo a Muzan ni siquiera había visto la sombra del Rey de las maldiciones.
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Hankō kōi by tamamohitomi
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
10 Dec 2025
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Summary
Taking away Kokushibo's favorite toy has unexpected consequences for everyone.
______________
Sequel to Suki Kirai
Series
- Part 2 of DoumaxKokushibo
- Part 3 of Upper Moon Dark Fics
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Can't run away by Braixen434
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
06 Dec 2025
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Summary
Muichiro ran, not daring to stop. The forest was too quiet; no crickets, no owls, only the beating of his own heart and the echo of his footsteps. He knows he's close. He knows it because the air grows thick, that scent again.
He runs faster.
A tree trunk falls to his left with a crash that shakes him to his core. It's not a coincidence. It's a warning.
"I am here".
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Muzan's dead, let's start living by Dotfeather_144
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
04 Dec 2025
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Summary
Kokushibou, Douma, Akaza, Nakime, Nezuko.
In the canon timeline, these demons never had any chance of changing, developing, experiencing the world.
But when the infinity castle resisted Nakime’s control, the hashira didn’t fall and instead Muzan died without the Upper Moons being defeated. In his hatred of the demon slayer corps, Muzan frees all demons from his control so that they defeat the demon slayer corps.
However, freed from Muzan’s control, the five demons walk different paths, changing their worldview, finding new friends and deciding who they want to be.
But are they even allowed to live happily after all they've done? And how are they going to leave their old beliefs behind?
Watch each and every one of them find their own answers to those questions.
Cross-posted on wattpad under the same username!