KNY AUs
Series Metadata
Listing Series
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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)
07 Apr 2026
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Summary
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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My brother dear by Sm0lb3tch
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
16 Feb 2026
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Summary
This time, it's not a demon slayer who finds Yoriichi cradling his wife's corpse.
It's his older brother, who by coincidence traveled up that mountain.
Series
- Part 3 of KNY fanfics
- Part 2 of KNY AUs
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The Kamado Twins by Sm0lb3tch
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
25 Mar 2026
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Summary
After the Final Battle against demons, Tanjirou returned to his childhood home on Mount Kumotori. His life returned to being ordinary, and Tanjirou wouldn't have had it any other way.
Sometime after that, Tanjirou and Kanao got married, and eventually had two children, twin boys who they named Michirou and Yorio. "Sternness" and "destiny".
And maybe—for once—an older brother won't feel like a failiure, and two brothers will have a second chance.
Series
- Part 4 of KNY fanfics
- Part 3 of KNY AUs
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The Demon's Apprentice by Sm0lb3tch
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
23 Mar 2026
Tags
Summary
Kokushibo envied his brother. He envied Yoriichi until the day the man died of old age. He envied and loathed Yoriichi Tsugikuni. After Yoriichi's death, Kokushibo's life was... better. He grew stronger, like he wanted to. He buried the memories of his brother in the depts of his mind.
However, those memories are brought back up when he encounters a young Demon Slayer, who resembles Yoriichi too much.
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Tanjirou Kamado never expected to encounter Upper Moon 1 on his mission. And he also never expected for this to be his fate.Life is an unpredictable game, and he is only one of the players.
Series
- Part 5 of KNY fanfics
- Part 4 of KNY AUs
- Part 2 of Kokudad & Tanjison