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The Therapy Bunny Experience by CottonCandyColor1 (The_Candy_Crazed_Child942)
Fandoms: 鬼滅の刃 | Kimetsu no Yaiba (Manga)
20 Sep 2021
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Summary
"What's that?" Muzan said.
Wordlessly, Kokushibou set the cage down on the coffee table. He opened the top and delicately grabbed the rabbit to take it out. Now he stood with the rabbit held up in his hands, looking down on his partner.
"... What the fuck is that." Muzan repeated, with slightly more edge of irritation in his tone.
"A rabbit." Kokushibou bluntly replied.
"..."
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Experiments by bettybooploop
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
20 Oct 2025
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Summary
Obsessed with the idolizing idea of creating the perfect being of a demon, Muzan Kibutsuji was willing to do anything.
The scientific methods he forced onto his demons were cruel. They were nothing but test subjects and the results always ended in fail. Experiment after experiment the twisted fate was always the same.
Relentless and impatient—Muzan Kibutsuji turned to an idea of having his two strongest creations breed together in hopes of producing the ideal product he’s been searching tirelessly for.
(Kokudou female Koku & male Douma)
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Even Demons Need A Little Warmth! by CursiveDew
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
16 Dec 2025
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Summary
Ah?"
Muzan, who is sitting on a couch, reading a random book (probably books about the blue spider lily), looks up, his attention drifted from the text in the book to the trembling demon in the doorway. Muzan notices the shiver of coldness across the other demon's body just by looking at him. "Are you cold?" Muzan asked even if he knows it's so obvious his poor demon is cold and Muzan here is just getting all comfy and stuff, how unfair. "Yes..." Kokushibo replied softly, his voice shaky as the coldness seeped into his bones.
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Moiety by Kilekim789
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
28 Mar 2026
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Summary
‘Fear’ knows no face but the face of Kibutsuji Muzan.
Muzan, who reigned over the darkness, who fed from the terror that soaked human hearts, who drank the blood that chilled from knowing a force that was more frightening than death itself.
Muzan-who was afraid…of his own demons.
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Of Moons, Mist, and Long-Lost Family by scalenesofwisdom
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
30 Mar 2026
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Summary
On the mountain where he grew up, Kokoshibo--the ferocious Upper One--finds a shack with two injured boys. Boys who just so happen to perfectly resemble him and his long-dead twin, Yoriichi.
He doesn't miss him. He doesn't.
But he takes in the twins, saving their lives and keeping them safe.
Because they are his, and he will not let them go.
Bookmarked by Rotten_Ones
17 Jun 2026
Bookmarker's Notes
RAGGGHHHHH KOKUSHIBO AND HIS BABIES AHHHHHH