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1. The Butterfly and the Fish by soysauce456

   Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • F/M
   • Complete Work

   24 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Kochou Shinobu/Tomioka Giyuu
   • Kochou Shinobu
   • Tomioka Giyuu
   • Uzui Tengen
   • Kamado Tanjirou
   • Tsuyuri Kanao
   • Douma (Kimetsu no Yaiba)
   • Smut
   • Angst
   • Hurt/Comfort
   • Fluff and Angst
   • Explicit Sexual Content
   • Crimes & Criminals
   • Blood and Injury
   • Alternate Universe - Canon Divergence
   • Alternate Universe - Modern Setting

   Summary

   Original Author's Summary:

   The renowned detective Tomioka Giyuu receives a case commissioned by the police.

   A series of murders has occurred in Chiyoda and all of the victims belong to powerful financial conglomerate families. The crime scenes contain no physical traces of the culprit whatsoever—no fingerprints, no hair, not even footprints.

   Yet, as if deliberately taunting the investigators, the murderer leaves behind a purple butterfly at each victim's wound...

   —

   It might be a little OOC, but I'll do my best to keep everyone in character.

   Language:

   English

   Words:

   43,757

   Chapters:

   20/20

   Kudos:

   41

   Bookmarks:

   8

   Hits:

   1,430