Aizetsu (Kimetsu no Yaiba) FanFiction

Monstober 2025

Monstober 2025

F/F
F/M
Multi
Other
G
Updated
11.04.2025
Fandom
鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Shinazugawa Sanemi/Reader, Tomioka Giyuu, Kanroji Mitsuri, Kibutsuji Muzan, Kokushibou | Tsugikuni Michikatsu, Douma (Kimetsu no Yaiba), Daki | Ume (Kimetsu no Yaiba), Tsugikuni Yoriichi/Reader, Shinazugawa Genya/Reader, Kanroji Mitsuri/Reader, Kaigaku (Kimetsu no Yaiba)/Reader, Aizetsu (Kimetsu no Yaiba)/Reader,
Decided to do another monster filled month because why not? Also it's just regular monsters this time. I'm gonna try to do different monsters from what I did last year. So enjoy!
Yantober

Yantober

F/F
F/M
Multi
Other
G
Updated
11.04.2025
Fandom
鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Shinazugawa Sanemi/Reader, Kanroji Mitsuri, Tsugikuni Yoriichi/Reader, Shinazugawa Genya/Reader, Kanroji Mitsuri/Reader, Kaigaku (Kimetsu no Yaiba)/Reader, Aizetsu (Kimetsu no Yaiba)/Reader, Iguro Obanai/Reader, Tsugikuni Yoriichi, Aizetsu (Kimetsu no Yaiba), Shinazugawa Genya, Shinazugawa Sanemi,
A lot of these will be Yandere regardless and will be both platonic and romantic. Each week will also have a different theme attached below.
Mermay Madness

Mermay Madness

F/F
F/M
Multi
Other
G
Updated
11.04.2025
Fandom
鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Shinazugawa Sanemi/Reader, Tomioka Giyuu, Kanroji Mitsuri, Kochou Shinobu, Kibutsuji Muzan, Kokushibou | Tsugikuni Michikatsu, Douma (Kimetsu no Yaiba), Nakime (Kimetsu no Yaiba), Tsugikuni Yoriichi/Reader, Kanroji Mitsuri/Reader, Kaigaku (Kimetsu no Yaiba)/Reader, Aizetsu (Kimetsu no Yaiba)/Reader,
Kny mermay. That's literally it. The name of the type of mer they are is stated by the type of fish that's listed. For example Douma is a Fairy Wrasse mer.
Unnamed Memories...

Unnamed Memories...

F/F
Gen
M/M
Multi
G
Updated
11.04.2025
Fandom
鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Tomioka Giyuu, Demon Slayer Corps Hashira | Pillars, Kibutsuji Muzan, Douma (Kimetsu no Yaiba), Daki | Ume (Kimetsu no Yaiba), Nakime (Kimetsu no Yaiba), Aizetsu (Kimetsu no Yaiba), Kaigaku (Kimetsu no Yaiba), Gyutaro (Kimetsu no Yaiba), Enmu (Kimetsu no Yaiba), Ubuyashiki Kagaya, Kanroji Mitsuri/Kochou Shinobu,
Tags
Help I'm Bad At Tagging How Do I Tag KNY swap au Douma is a Little Shit (Kimetsu no Yaiba) they're all little shits
When Nezuko traveled with her demonic brother, her actions left behind ripples. Ripples that will stir up chaos.In the original world, the Corps found out a sinister truth that will shake them down to their Mizunotos.In the swapped world, the Corps s...
A Freak of Nature

A Freak of Nature

F/F
F/M
M/M
Multi
Other
G
Updated
11.04.2025
Fandom
鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Original Characters, Tomioka Giyuu, Kochou Shinobu, Kibutsuji Muzan, Kokushibou | Tsugikuni Michikatsu, Douma (Kimetsu no Yaiba), Daki | Ume (Kimetsu no Yaiba), Kamado Nezuko, Aizetsu (Kimetsu no Yaiba), Shinazugawa Genya, Shinazugawa Sanemi, Uzui Tengen,
Tags
Fluff Angst Alternate Universe - Canon Divergence Magic Heavy Angst Original Character(s) Canon-Typical Violence Other Additional Tags to Be Added Blood and Gore Gore Eventual Romance Angst and Hurt/Comfort
The Demon Slayer Corps has kept one clear goal over the many centuries since its founding,Aniallate Muzan Kibutsuji and his demons to protect the innocent humans that these monsters pray upon. But it seems that the demon king has once again done what...