1 Series by OmegaMuffin

Listing Series

• A/B/O Chronicles of Water and Flame by OmegaMuffin

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

  • Explicit, General Audiences
  • No Archive Warnings Apply
  • M/M
  • Series in Progress

  07 Jul 2026

  • No Archive Warnings Apply
  • Rengoku Kyoujurou/Tomioka Giyuu
  • Tokitou Muichirou & Tomioka Giyuu
  • Kanroji Mitsuri & Tomioka Giyuu
  • Kochou Shinobu & Tomioka Giyuu
  • Rengoku Kyoujurou & Tokitou Muichirou
  • Kanroji Mitsuri & Kochou Shinobu
  • Rengoku Kyoujurou & Rengoku Senjurou
  • Rengoku Senjurou & Tomioka Giyuu
  • Rengoku Kyoujurou & Uzui Tengen
  • Rengoku Kyoujurou
  • Tomioka Giyuu
  • Tokitou Muichirou
  • Himejima Gyoumei
  • Shinazugawa Sanemi
  • Kanroji Mitsuri
  • Kochou Shinobu
  • Iguro Obanai
  • Uzui Tengen
  • Ubuyashiki Kagaya
  • Rengoku Senjurou
  • Alpha/Beta/Omega Dynamics
  • Omega Tomioka Giyuu
  • Alpha Rengoku Kyoujurou
  • Established Relationship
  • Porn with Plot
  • Porn with Feelings
  • First Time
  • Frottage
  • Intersex Omegas
  • Vaginal Fingering
  • Vaginal Sex
  • Oral Sex
  • Cunnilingus
  • Domestic Fluff
  • like I felt nauseous from how sweet these two are lol
  • Scent Kink
  • Breeding Kink
  • I always need to slip a bit of that into my fics ngl
  • Praise Kink
  • Sweet Talk
  • like so many words of validation
  • mentioned Kamado siblings at the beginning
  • Mama Giyuu propaganda is present for a bit lmao
  • I just think motherhood would fix him but more on that later
  • mentioned Urokodaki fam as per Giyuu backstory usual
  • Pack Dynamics
  • Pack Bonding
  • Fluff
  • Platonic Relationships
  • like holy HELL there’s a lot of them but I tagged the main ones shown
  • Scenting
  • Omega Tokitou Muichirou
  • Omega Kanroji Mitsuri
  • Beta Himejima Gyoumei
  • Alpha Kochou Shinobu
  • Alpha Shinazugawa Sanemi
  • Beta Iguro Obanai
  • Alpha Uzui Tengen
  • should I have even tagged alla that when you’ll just see it in the fic itself lmao
  • hinted Iguro Obanai/Kanroji Mitsuri
  • they’re not together yet but it’s implied pining
  • Mama Giyuu makes a return
  • I can’t get enough of him aaaauuughhhh
  • Soft Tomioka Giyuu
  • also Papa Kyoujurou
  • they’re such wonderful parents…
  • Mentioned Kamado Siblings - Freeform
  • but not enough to warrant a character tag
  • Romantic Fluff
  • Sibling Love
  • I think that’s enough tags to get the gist
  • Soft Rengoku Kyoujurou
  • Yearning
  • even tho they’re literally a couple
  • every word they speak to one another is pure sap
  • Secret Relationship
  • Supportive Uzui Tengen
  • he and Mitsuri are their biggest cheerleaders
  • Domesticity
  • Mating Rituals
  • Gift Giving
  • hidden relationship no longer being secret
  • anxious Tomioka Giyuu
  • slight angst
  • typical Giyuu pain but add omegaverse!
  • Protective Rengoku Kyoujurou
  • mentioned pack dynamics
  • although their pups aren’t in the fic itself
  • rengiyuu week 2026

  Summary

  A series of fics in non-chronological order depending on what mood I’m in to write. All dealing with rengiyuu in my omegaverse au!

  I have a lot of ideas and some stuff planned but I’m very inconsistent with writing, full disclosure. I’ll do my best to deliver tho! We need more of them in every universe.

  Words:

  48,590

  Works:

  4

  Bookmarks:

  59