Best Long Demon Slayer Fanfics
Demon Slayer fanfics in the 50k–100k range — full novel length without the multi-week commitment. Curated from AO3 and ranked by kudos.
Top 23 Long Demon Slayer Fanfics
Ranked by AO3 kudos. Mid-length Demon Slayer fics — 50,000–100,000 words.
Demon of the Sun
by euphoricimage
Demon. Monster. Traitor. Those were all words used to describe Kamado Tanjirou. And that was perfectly understandable. After all, even though he was kind to everyone, a demon trained in the Breath of the Sun who hunted down the Twelve Demon Moons was sure to strike fear into the hearts of demons and
The Wandering Swordsman
by Dark_Ryu_69
(Pillar Zenitsu AU!) Zenitsu feared death; but if it was for his friend, he didn't mind dying heroically. Though, if he knew he was going to die this way, he wished he could've spent more time with the people he loved and lived his life a little bit differently. As warm tears rushed down his cheeks,
hundred thousand hearts
by sanguinesun
Giyuu's eyes widen, pretty in the way a seemingly calm river with vicious rapids lurking underneath is pretty, and Sanemi is screwed. He promises himself that nothing like this will ever happen again.He's lying.(Sanemi and Giyuu fall into a friends with benefits situation. Then everything falls apar
i am not hated
by mochinko
There’s something new about the Butterfly Estate... ---or it's Kanae who finds and rescues Giyuu after he runs away
bloodlines
by realfakedoors
There are, on occasion, words that aren’t like any you’ve spoken or heard before. Words that claw their way up from the belly, tearing through your throat and falling from your lips, whispered with all the desperation of a prayer with no hope of being heard—words like these are one of the most immut
kny tweets !!
by R4D1KAL
here's some kny tweets ive made, the tags have all you need to know basically. they'll be updated as i make more. i have these posted as actual images to a tiktok dedicated to just kny tweets, it's @kny__tweets..edits small edit, i no longer have access to that tiktok account & i don't post these to
Imposter syndrome
by Drowsy_asher (Sleepy_Asher)
The world of demons is an unfortunate one. Some people remain completely oblivious to their existence while others have their lives completely destroyed from the demons.The world is not gray.As many years has passed after the creation of the first demon, more of his kin cause many to grief and suffe
Write Me the Kanji for Sun
by AnOrdinaryButtercup
Broken and miraculously mended back together, Kyojuro returns home to his family, dead set on recovering and resuming his duties as Hashira. He doesn’t expect that the demon who nearly killed him would seek him out again—with flowers and another impossible proposal in tow. Not to turn him into a dem
Demon slayer (kny) smut shots
by Choco_cowmilk
Smut shots for demon slayer because I see them all the time and want to make my own!!! Chapters will come out slow, getting them out whenever I can please be patient! (Summary edited 4/27/26, latest chapter out is chapt. 23)
In The Direction of Here
by starlite_starbrite
Upper Moon One has been clearing Tomioka Giyuu's territory of demons for five months. He's killed sixty-seven of them. One was in Tottori Prefecture, which was three prefectures away and not in Giyuu's territory.When asked why, Upper Moon One said it was heading in the direction of here. Eventually.
「义炭」垂涎
by sgezim
网黄声控主播x大学生兼职助理完全小头控制大头产物，自行避雷一下-暗恋多年的主播今天终于成了我的老板，我要一辈子跟他待在一起，拍什么我都愿意。
The Dance of Sun and Moon
by Kramunkel
Protecting the weak had always been the one principle that Kyojuro had lived by, etched into his mind from the time he had been nothing but a boy. Never had he thought that it would drive him to getting himself turned into the very thing he had sworn to destroy. Just as he had never thought it possi
Kyojuro/Akaza
by Akashii_chan
Kyojuro tries to recover and return to his life after a brutal battle, but Akaza, refuses to let go of him. He's not seeking death but a fight, constant surveillance, and an unrelenting presence.As Akaza crosses increasingly dangerous boundaries, Shinobu attempts to help, while Douma watches from th
implicating you
by vsepr
"I've seen the kendo club. Bunch of losers if you ask me." He flashes a grin at him. "Join us. You wanna learn how to fight, you're not gonna do it from swinging around a wooden stick." If Kyoujurou is put off by the callousness of his tone, he doesn't show it. His smile is unfaltering. "Is that so?
【义实/宇炼/炭伊】你好，这里是东京都警视厅•Hi, This Is the Tokyo Metropolitan Police Department
by alaana322
*现代AU，主打办公室恋情 *主要是写身为警察的鬼灭角色们的故事，日常+主线，案件是辅助 * 5/11/2026:补充了一段不死川审讯的过程，这样观感更好一点5/23/2026:我重新估算了我要写的剧情内容，所以更改了章节数量（但只是大概，可能也会比58章少一点） PS：本文的警视厅部门设置有一定架空成分，并不完全对应现实编制。完全按照现实来写的话让这群人凑在一起就比较难，还请大家多多包涵了🙏
[日黑]逆梦
by ziran555
你我何时相逢，在梦中 总之是转世弟跟咒灵哥再续前缘的狗血故事十岁时，继国缘一偷跑到忌库里唤醒了一个沉睡百年的咒灵，不知道为什么第一次见面就想称呼对方兄长，像是刻进灵魂的本能。 咒回paooc属于我灵感和标题皆来源于咒回剧场版片尾曲《逆梦》出场角色皆为鬼灭原作角色和原创路人NPC，不涉及咒回角色既然已经打过无惨了接下来该打老橘子了！ 目前正文已完结番外更新中，会带去8.8.杭o仅限场贩，感兴趣的老师可以去点点心愿单
I Hope This Email Finds You In Love
by lettersfromnowhere
Kanroji Mitsuri is falling behind: in her stalled career, in her nonexistent love life, in her never-ending quest to finish her latest doujins in time for the next convention. Rengoku Kyojuro's given up on the stage, contenting himself with a quiet life narrating audiobooks and caring for his ailing
Mother of the Forest
by meganb1898
Tamayo had been fascinated by Muzan’s power and physiology; he was something that wasn’t human. He could alter his body at will by controlling and replicating each individual cell. Because of this ability, he could heal from any wound, bore immense physical power, and turn other humans into the same
Destinado Equivocado
by xAlerangz
Cuando Kyojuro Rengoku es arrastrado al pasado encuentra a Hakuji, un Omega humano, de ojos limpios, que no lo conoce y lo trata de loco al escuchar sus relatos. Atrapado en una época que no le pertenece, Kyojuro se niega a aceptar la realidad e intenta desesperadamente obligar a Hakuji a recordar e
【义实/微宇炼短篇集】相恋五十次•Fifty times in Love.（目前全部已完结）
by alaana322
*这是我写过的万字小短篇，故事为主，偏清水，全都打算放在这里了*因为短篇是我试水的地方，所以题材和故事背景会变化得比较多*大部分是义实，有时候也会有宇炼出场，有宇炼或者是其他cp的我会标记出来—————————————————————【第一篇：环游世界系列——冰岛之旅】（鬼灭学院AU，已经交往的富冈和不死川一同前往冰岛旅行）【第二篇：名著书名系列之傲慢与偏见】（大正时代剧，翻译腔调调——富冈子爵阁下与不死川先生，一个被误认为是傲慢，一个则对其有了偏见，欢喜冤家）【第三篇：守望电话亭】（现代AU，一个能连接现在与未来的电话亭，将不死川与一位老人通过看不见的电话线连在了一起）【第四篇：春风得意马蹄
【义实/宇炼/炭伊】紫藤花影下•Under the Wisteria Shadows
by alaana322
*现代东京背景，宇髓/富冈/伊之助是同母异父三兄弟设定，参考日本漫画《蔷薇之恋》 *义实/宇炼/炭伊义实——破镜重圆宇炼——暧昧朋友炭伊——青春初恋 *但友情亲情也有，并且应该不少
【all 炭】灶门炭枝战记
by FujioItsuki
炭治郎性转+次女前提的故事。
Interlinked Destinies - Giyushino
by Watabug
Tomioka Giyuu once believed his fate was merely to survive and carry the pain of those who had fallen. However, standing before the divine, he was granted a chance to return to the past to save his loved ones and rewrite their cruel destinies.The condition was to accept the thread of fate of a stran
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About This List
This list of 23long Demon Slayer fanfics spans 1,647,558 total words. Kudos range from 22 on the newest entries to 5,676 on the most established. Most entries are ongoing works, so subscribe on AO3 for update notifications. The most common rating is Teen And Up Audiences (9 of 23 fics).
Recurring tags across this list: Alternate Universe - Modern Setting · Slow Burn · Demon Kamado Tanjirou · Alternate Universe - Canon Divergence · Rengoku Kyoujurou Lives.
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