Demon Slayer, Dark Fiction 鬼灭，黑暗文

1. 51 鬼 Demon Slayer: I’m an Upper Rank Demon and the Demon King’s Secretary 鬼灭：人在上弦，是鬼王秘书 A Black Bird一只玄鸟Anime Fanfiction685k WordsCompleted (The rating has just come out. It'll slowly rise from here.) [Female protagonist + no System + demon + on Muzan's side + Demon Slayer Corps annihilation] Many years later, as Tsugikuni Mitsuha faces the Demon Slayer Corps in the final battle at the Infinity Castle, she will remember that morning when she took Yoriichi to watch Michikatsu practice swordsmanship. Perhaps it was from that day onward that the fates of the three Tsugikuni siblings were sealed... My name is Tsugikuni Mitsuha. I am the 9.4kReads8.5Score1.3kShelves
2. 52 鬼 Demon Slayer: Every Day Is a Legendary Scene After I Become Muzan 鬼灭：穿成无惨后每天都是名场面 Lucky Star吉人天相星Two Male Leads204k WordsCompleted [Two male leads + System + secret identities] With a System in tow, he transmigrates into Muzan Kibutsuji's body just as the reborn Yoriichi Tsugikuni appears. Fortunately, with the System's help, he manages to cling to life for now. System: Mission One: Find a person of utmost yang. System: Mission Two: Stay in contact with that person for one minute. Muzan: ??? There are plenty of ways to get me killed. Why not just make me go sunbathing?! System: Final Mission: Raise Yoriichi Tsugikuni's affe 1.8kReads9.2Score337Shelves
3. 53 圣 The Demon Sorcerer: From the Start, I Met Michikatsu Tsugikuni and Got a Brutal Training 圣主：开局遇继国缘一，惨遭调教 Lightspeed Kick光速踢Anime Fanfiction346k WordsOngoing [The Demon Lord] + [scheming] + [Demon Slayer] + [growth] + [invincible later on] My name is the Demon Lord. That's right, the fire demon. I thought I could keep throwing my weight around after switching worlds, but as soon as I landed, a guy named Yoriichi Tsugikuni cracked my skull. One slash, and my demon body was as fragile as the tofu pudding sold on the street. I nearly died on the spot. At first, I couldn't accept it. Then I realized I'd lost my talisman powers. There was nothing I could 11Reads—Score—Shelves

   Reader note

   Chasing after his wife (Yoriichi Tsugikuni) + a coming-of-age story. He doesn't have any magical powers in the early stages, but becomes stronger by eating demons.

4. 54 鬼 Demon Slayer: A Neutral Demon’s Hundred Years of Solitude 鬼灭：中立鬼的百年孤独 The True Story of Xiangzi祥子正传Anime Fanfiction189k WordsOngoing [Not Overpowered] [Chaotic Neutral] [Female Protagonist] Four hundred and eighty years. She went from a hero of the Demon Slayer Corps to Muzan's most treasured collectible, then to a wandering soul caught between humans and demons. The Demon Slayer Corps' history books say she “died in battle,” while Muzan is still searching everywhere for his lost collectible. And she herself doesn't know who she really is: Amagi Yukiko, Himiko, or a ghost who can never return to either side. “Big sister, sta 84Reads—Score—Shelves

   Reader note

   It's a little dark, isn't it? [Thinking]

5. 55 转 Reborn as Muzan, I Become the Mastermind 转生无惨，然后成为幕后黑手 Soft Little Doves软鸽鸽Anime Fanfiction1.3M WordsCompleted [Multiverse crossover: Demon Slayer, Cyberpunk 2077, Sekiro, Jujutsu Kaisen, Touhou Project, The Kitaro of the Graveyard, Hell's Paradise, Harry Potter, The Witch from Mercury, Shiki, and more as they come up] Travel across the land, and mysteries awaken. Wait, what do you mean Arasaka's CEO is named Muzan Kibutsuji? So vampires count as demons too?! Muzan Kibutsuji: As the progenitor of demons, it makes perfect sense for me to turn Saburo Arasaka into a demon and make him the president of Ara 4.4kReads8.4Score502Shelves

   Reader note

   It's not a bashing; feel free to check it out if you're interested.

6. 56 综 Anime Crossover: I Stopped Being Human, Starting with Demon Slayer 综漫从鬼灭开始不做人 Just Go with the Flow and Take It Easy随缘就好看淡了Anime Fanfiction667k WordsOngoing Wang Yu was sent to Demon Slayer by an unknown being looking for a laugh. Wang Yu: What? The Boss turned me into a demon from the start. If I can't be human, then I'll go completely off the rails. The Demon Slayer and JoJo crossover world is complete. The Tokyo Ghoul crossover is ongoing. The male lead only wants to enjoy life. He's not a good guy. [No saintly savior] + [Ruthless and decisive] + [Anime Crossover] 4Reads—Score—Shelves
7. 57 我 I Became Awesome Through Technology 我靠科技开始牛掰 Binghuo Zi Wende丙火字文德Eastern Fantasy1.1M WordsCompleted [No System] [Villain in the Later Chapters] [Immortal-Sucking Technique] [Soul Devouring] [Fast Leveling] A scientist transmigrates to the cultivation world and gradually transforms from a good person into a demonic cultivator. 293Reads—Score—Shelves
8. 58 我 I Cultivate Through Bloodsucking 我靠吸血修仙 Binghuo Zi Wende丙火字文德Eastern Fantasy357k WordsCompleted The new novel, I Get Awesome Through Technology, is currently being serialized and has already reached one million words. The ghost story collection, Tales of Demons and Ghosts at Night, is complete. If you like ghost stories, go check it out. 59Reads—Score—Shelves
9. 59 妖 Tales of Demons and Ghosts at Night 妖鬼夜话 Binghuo Zi Wende丙火字文德Mystery209k WordsCompleted My new book, I Get Awesome with Technology, is now being serialized. My short ghost stories The Water Ghost, The Seventh Night, The Departure That Year, and The Soul-Calling Lantern are available on Tomato Short Stories. 421Reads6.6Score—Shelves
10. 60 幕 Chronicles of the Bakumatsu Calamity 幕末荒神录 Four Beatings a Day一天四顿打Anime Fanfiction513k WordsOngoing [Demon Slayer × Rurouni Kenshin] In the chaotic final years of the shogunate, blades stain the land, and humans and demons run rampant. Kiyosato Akiyoshi was destined to be a disposable character in the world of Rurouni Kenshin, slain by the Battosai. He dies beneath the blade of the young Kenshin, only to be unexpectedly possessed by Xu Yuan, a modern history teacher who has transmigrated into his body and awakened the primal power of Otakemaru, the Great Tengu from Nioh 2. With death, all his —Reads—Score—Shelves

    Reader note

    It's not so much about darkness, but rather a third-party force, a story of vying for supremacy.

11. 61 仙 The Immortal Venerable in Demon Slayer 仙尊在鬼灭 Shunlong Who Likes Earthy Tea喜欢土茶的舜龙Anime Fanfiction321k WordsOngoing [Great Love Immortal Venerable] + [Gu] + [Demon Slayer] + [play the pig to eat the tiger] + [Masterminded Schemes] After losing the battle of fate, Fang Yuan unleashes his final killer move, Spring Autumn Must Succeed. Spring Autumn Cicada carries Fang Yuan's will and his incomplete body slowly upstream, but then a hand reaches out from the void and grabs Fang Yuan, pulling him inside. And so Fang Yuan arrives in a new world: Demon Slayer. After learning the basics of this world, Fang Yuan disc 8Reads5.3Score—Shelves

    Reader note

    Needless to say, everyone has witnessed the methods of the Immortal Venerable. If this is not considered dark, then there is no dark literature in this world.

12. 62 鬼 Demon Slayer: Is Nezuko Forced to Join the Enemy in Episode One? 鬼灭：祢豆子第一集就被迫投敌？ Pure Puppy Play清纯狗塑Anime Fanfiction155k WordsOngoing Warning: Nezuko joins the demon side, gradually loses her humanity, and becomes one of Muzan’s subordinates. What would happen if Muzan discovered Nezuko’s unusual constitution in the very first episode, turned her into a demon, and took her to the Infinity Castle? The story still unfolds mainly from Tanjiro’s point of view. It’s an if-story that combines elements of the original, with some major changes to the plot. I’ll do my best to give everyone a happy ending and keep the characters in char 6Reads—Score—Shelves

    Reader note

    Nezuko becoming Muzan's subordinate is quite dark.

13. 63 炭 Demon Slayer: Tanjiro's Life as the Demon King 【鬼灭之刃】炭治郎的鬼王生涯 The Orange Is a Little Kitty橘子是只小猫咪Anime Fanfiction469k WordsOngoing [The rating just came out, so it'll probably go up later, I guess. Villain story, villain story, villain story: important things bear repeating. Contains heroes falling to evil, brainwashing and control, and other villainous elements. Don't read if that's not your thing.] Good news: after devastating sacrifices, the Demon Slayer Corps successfully killed the Demon King, Muzan. Bad news: Muzan was reborn. Fortunately, Muzan's intelligence is on par with that of a ripe banana. So he created a new 1.1kReads8.9Score100Shelves

    Reader note

    It looks great! [Laughs][laughs]

14. 64 我 Can I, Kokushibo, Only Become a Dark Web Streamer? 我黑死牟只能去当暗网主播？ Chuunibyou Zuozhu中二的左住Anime Fanfiction43k WordsOngoing (Horror) + (Hilarious!) + (Livestream) I’m a transmigrator. I originally transmigrated into the body of Michikatsu Tsugikuni in Demon Slayer, and I thought I was invincible. But damn it, I transmigrated back again! Michikatsu Tsugikuni: Have you ever seen the sun over Suzhou at five in the morning? I saw it while scavenging for trash. Michikatsu Tsugikuni: Moon Breathing, First Form! Mosquitoes, consider yourselves annihilated. Michikatsu Tsugikuni: Here, take this. This is the last red bean bun 1Reads—Score—Shelves
15. 65 鬼 Demon Slayer: The Most Wicked Flower of the Tsugikuni Family 鬼灭：继国家的极恶之花 Green Lamp and Ancient Buddha青灯与古佛Anime Fanfiction722k WordsOngoing [Female Lead + Evil Demon + Joins Muzan + No System + Slow Burn] At seventeen, Keiko Tsugikuni was as sweet and lovely as a flower bud about to bloom. Without realizing it, Yoriichi Tsugikuni found himself looking forward to seeing that bud blossom in spring. He had never imagined that she would bloom into something so ugly. My name is Keiko Tsugikuni. I am an utterly evil demon who has survived since the Warring States period, the eldest daughter of the Tsugikuni family, the younger sister of t 747Reads8.0Score—Shelves

    Reader note

    The female protagonist is the younger sister of Yoriichi and Kokushimaru, but she suffers from the same illness as Akeno. To survive, she chooses to become a demon, enduring misunderstandings and betrayals. However, someone deeply loves Keiko (the female protagonist). There are heart-wrenching moments, but also sweet ones. The female protagonist has strong moral principles and a bit of a temper, which is unavoidable. **Warning:** Obanai Iguro dies, and the Butterfly Sisters side with the protagonist (only the protagonist). Please, please, the author writes this really well, and the characters are very well-developed. Please read it! If you disagree or miss any warnings, please scold me, not the book. I didn't include any warnings because I didn't want to spoil anything. Please, please read it! Keiko is truly wonderful.

Other lists with Demon Slayer: I’m an Upper Rank Demon and the Demon King’s Secretary