1 - 20 of 78 Works in Agatsuma Zenitsu & Original Character(s)
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Nezuko & Co. by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
05 Oct 2025
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Summary
Kamado Nezuko went downtown to sell charcoal in her brother's stead, as he had a broken leg.
You can imagine her surprise when she returned home to find her entire family slaughtered, as well as her brother turned into a demon...Or
Nezuko and Tanjiro are swapped, Muzan is a hashira and I pulled an original character from my basement.
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Snowblind by Travelling_Writer
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
01 Oct 2025
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Summary
For centuries demons have hunted mankind. Under the cover of darkness, humans were prey meant to be slaughtered. For centuries, the Demon Slayer Corps has waged a losing war against the demons. This was the war Namiko and Yatsuo chose to join. To fight and give their lives for humanity.
But the tides are shifting. Two siblings, one a swordsman and the other a demon, have joined the Corps with the intention of ending this war for good. With their swords in hand, the Demon Slayers will join them."How is the moon tonight? I can't see it."
"It's looking quite lovely, I'd say."
Series
- Part 1 of The Snow and Bat Hashira
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This Space Between Life and Death by Error_CodeM0ss
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
30 Sep 2025
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Kaida’s world is shattered in a single night. She wakes up to a bloodbath, her family’s compound in ruins, death and destruction marking every surface. Alone and terrified, she confronts the monster responsible for the massacre, wielding her brother’s sword with no formal training or breathing style. In a mix of fear, adrenaline, and instinct, Kaida survives, but the cost is unimaginable. Her family is gone, and the echoes of violence linger in every corner of the house. With only her calico cat Maru for comfort, she struggles to process her grief and guilt, unsure how to move forward when everything she knew has been lost.
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The Moon Will Sing by DizzNizz9
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
30 Sep 2025
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Summary
It was hot. That’s the only thing hitting Mizuki right now, sweat stinging her eyes as her chest heaved. Zenitsu wasn’t far behind, panting even louder than she was.
A loud, stern voice ripped her from her thoughts. “Chin up! Pay attention, you two. Do you want to die? Demons will not care for your daydreams.” Gramps swung his cane sharply under their feet. Both of them yelped as they toppled forward, landing in a heap on the dirt.
- Language:
- English
- Words:
- 787
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 7
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New Beginning:Welcome to the Demon Slayer World by BREEZEYBREE
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
29 Sep 2025
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Summary
While traveling to Japan, Sabrina runs into a demon that shouldn't exist in her world. He takes her back with him, but she is able to get away and joins up with Tanjiro. Trying to hold on to what she knows about the events that are supposed to happen, her goal is to save everyone she can.
How will she save everyone, and how will she get back home? Or will she ever want to leave now that she is among those characters that she has always loved?I am new to writing so please be gentle with me!
***Work in Progess***
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Skibidi to meet you! Cap sis by Agnes_Lady
Fandoms: 나 혼자만 레벨업 | Solo Leveling (Webcomic), 나 혼자만 레벨업 - 추공 | Solo Leveling | Only I Level Up - Chu-Gong, 나 혼자만 레벨업 | Solo Leveling (Cartoon), ヒプノシスマイク | Hypnosis Mic (Albums), Blue Lock (Manga), Blue Lock (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), Clannad, ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Anime), ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Video Game)
28 Sep 2025
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Summary
Musume Rizzoshi (Rin's mogger twin) whose brother is Sae Rizzoshi. Left Ohio solo queue. So, she pretended to be a sister of the NPCs. She created a simp army. She had the top tier rizz lives
Disclaimer: this is for the giggles, a skibi joke, to avoid writing cringe like this.Don't take it to the Sigma level?😉
(Brainrot edition)Series
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Nice to meet you! Fake sister. by Agnes_Lady
Fandoms: 나 혼자만 레벨업 | Solo Leveling (Cartoon), 나 혼자만 레벨업 - 추공 | Solo Leveling | Only I Level Up - Chu-Gong, Blue Lock (Manga), Blue Lock (Anime), ヒプノシスマイク | Hypnosis Mic (Albums), 나 혼자만 레벨업 | Solo Leveling (Webcomic), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), Clannad, ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Anime), ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Video Game)
28 Sep 2025
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Summary
Musume Itoshi (Rin's look alike) whose brother is Sae Itoshi. Left Spain alone. So, she pretended to a sister of the characters. She made a harem. She had the best lives
Disclaimer: this is for satire,joke and to avoid writing like this.Would you mind not taking it seriously?😉
Series
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Broken Pieces of Glass by Jumpnoballs
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
25 Sep 2025
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Summary
"The path to paradise begins in hell" -Dante Alighieri, The Divine Comedy
What even is happiness?
But then again when happiness ends, the smell of blood always lingers and the ground is littered with broken pieces of glass.© Kimetsu no Yaiba belongs to Koyoharu Gotouge
oc(s) x kny -
Wrong timing u stupid birb (Demigod Zenitsu) by GhOsT_wItH_nO_sOuL
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
20 Aug 2025
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Summary
Denki Kaminari as a demigod - Ongoing
Zenitsu as a demigod - :)
What happens if in the middle of an important meeting, a crow flew in? A crow addressed to a certain Mr Zenitsu Agatsuma, courtesy of a place called 'Camp Half-Blood'?
Well, you're about to find out.
Series
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Rebound III by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
02 Jul 2025
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Summary
Betrayal.
To be honest, it was not a word I had experienced before.
I had always grown up in a tight-knit circle, intuitively knowing who to trust and who not to trust.
My dad? I could trust him.
My friends Muichiro and Yuichiro? I could trust them.
My best friend Kanao? I could trust her.
Kamado Tanjiro senpai, the guy Mui and Yui had introduced to me? I could trust him.
I always had these hunches and feelings about everyone, and they had never, ever failed me.
At least not until that moment.
Or
A sequel to Lost and Found pt. 3!
Series
- Part 3 of Rebound
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Rebound II by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
09 Jun 2025
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Summary
Tanjiro met Kanao while working at his family's bakery. It was like love at first sight for him: she was graceful, calm and beautiful. She happened to be a frequent client of the bakery, leading him to crush on her even harder.
There were just two problems.
- One: She went to the elite private school Seiran Academy, while he was some public school nobody.
- Two: Her stupid snob of a boyfriend!!
Or
A Sequel of Lost and Found pt. 2
Series
- Part 2 of Rebound
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Meeting Zenitsu and Inosuke: An Alternative Take on Lost and Found by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
22 Mar 2025
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Summary
“Well, you guys! This is Kaizen!” Tanjiro excitedly introduced him.
Kaizen just lifted his hand, waving it slowly.
“WAH! Not nearly as cute as Nezuko-chan!”
Series
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Step on up, up to the plate by Togo_Togawara
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), Persona 4
05 Mar 2025
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Summary
"I do apologize for appearing so suddenly, Zenitsu-sama." Callum chipperly spoke, his tone hushed to ensure no one at the Butterfly Estate would hear him "But we have an issue." the blond blinked.
"We have an issue?" he repeated, his confusion growing.
OR:
The return of the victim rescuing that Zenitsu and Mitsuri took part of in Inaba, but now, it's in the Taisho Era. And their first victim is the Wind Hashira.
Series
- Part 7 of Pursuing our True Selves (P4 x KnY AU)
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Found: Compromise by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
15 Feb 2025
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Summary
“Kaizen has banned me from sleeping with him indefinitely…” his voice came out absolutely weak and strengthless. “He barely even lets me hug him, and I’m not even allowed to kiss him.”
“I mean…” the blond slayer started. “You did make him cry for a whole day over nothing but sheer stupidity, are we even surprised here?”
“I know, I deserve it, but… Ugh…” his forehead slowly landed on the low table with a soft thud. “You have no idea what this is doing to me… It’s driving me insane.”
“Jeez, you look like a starved dog… I almost feel bad for you…” Zenitsu sighed, softly patting Tanjiro's head.
“He won’t even touch me, this is torture!”
“Aaand I did not need to know that.”
Series
- Part 54 of Lost and Found (One Shots)
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Found: The Poem by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
13 Feb 2025
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Summary
“Have you considered confessing?” the quiet girl finally spoke, earning a shocked glare from Tanjiro that he couldn’t control.
Aoi chuckled, shaking her head in denial. “No way, he would reject me right away… he doesn’t feel like the type to get into relationships, he’s a free spirit,” she added.
“Oh, really? I took him for the romantic type considering he showed me a love poem from one of his notebooks…” Kanao spoke softly, causing both Aoi and Tanjiro to gasp in surprise.
“Kaizen has written a WHAT now?!”
Series
- Part 53 of Lost and Found (One Shots)
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Found: The Beginning of the End by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
11 Feb 2025
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Summary
“…were you guys just kissing?” Inosuke inquired, scratching the back of his neck underneath the mask.
“I’m pretty sure you imagined that,” Kaizen was quick to answer, his voice not betraying a single drop of nervousness.
“No, I’m pretty sure I just saw you two kiss.”Series
- Part 51 of Lost and Found (One Shots)
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𝐀𝐧𝐠𝐞𝐥 𝐂𝐨𝐧 𝐆𝐚𝐫𝐫𝐚𝐬|𝐊𝐢𝐦𝐞𝐭𝐬𝐮 𝐍𝐨 𝐘𝐚𝐢𝐛𝐚 𝐱 𝐎𝐜 by La_mayonesa_suprema
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
06 Feb 2025
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Summary
Kotori guarda un gran secreto en su sangre, uno que ni ella misma conoce, cuando huye de casa ella termina despertando un gran poder, uno que podría ser tanto su salvación como su maldición.
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Found: A Promise for Future Reunion by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
26 Jan 2025
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Summary
“I wonder… what should I grow for my 16th birthday?” Kaizen wondered aloud.
Urokodaki hummed, thinking of a proper answer. “Perhaps you should grow an extra brain. Maybe then you’ll mature and stop being so reckless.”
Series
- Part 35 of Lost and Found (One Shots)
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Lost: Kaigaku by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
25 Jan 2025
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Summary
“Kaigaku? No way, are you Zenitsu’s training partner?” the demon boy probed, his eyes holding a glint of mischief that Tanjiro was starting to get unsettled by.
What is Kaizen even thinking? Who even is this Kaigaku guy? Is it something Zenitsu hasn’t shared with me yet?Series
- Part 34 of Lost and Found (One Shots)
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Lost: Patience by booigi00
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
22 Jan 2025
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Summary
“So, if the Hinokami Kagura is Sun Breathing and it’s being passed along with those hanafuda earrings, it means that…” Kaizen tried to gauge whether Tanjiro was really understanding him or not.
“It means that… I might be related to the first Sun Breather, the one who gives your father nightmares!” Tanjiro concluded, his eyes bright with excitement as he spoke those words.
Series
- Part 31 of Lost and Found (One Shots)