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1. Diamonds and Rust by crusty_snail_juice

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

   • Mature
   • No Archive Warnings Apply
   • F/F, M/M
   • Work in Progress

   07 Jul 2025

   Tags

   • No Archive Warnings Apply
   • Iguro Obanai/Tomioka Giyuu
   • Kanroji Mitsuri/Kochou Shinobu
   • Iguro Obanai/Kanroji Mitsuri
   • Kochou Shinobu/Tomioka Giyuu
   • Tsuyuri Kanao
   • Shinazugawa Sanemi
   • Kanzaki Aoi (Kimetsu no Yaiba)
   • Kochou Kanae
   • Alternate Universe - 1950s
   • Lavender Marriages
   • Obamitsu and Shinogiyuu are said lavender marriages
   • I tried to be as period-accurate as possible
   • Background Kochou Kanae/Shinazugawa Sanemi - Freeform
   • Period-Typical Homophobia
   • Internalized Homophobia
   • Religious Guilt
   • The Author Regrets Nothing
   • The Author Regrets Everything
   • Kochou Shinobu is a badass scientist
   • Rivals to Lovers
   • Friends to Lovers
   • i haven't decided if there's going to be smut or not
   • probably not
   • idk - Freeform
   • Please Don't Ask
   • Slow Burn
   • Kind Of
   • medium burn?
   • yeah.

   Summary

   Obanai and Mitsuri along with Shinobu and Giyuu get married in the 1950s/60s into lavender marriages. Giyuu and Obanai fall in love, Mitsuri and Shinobu fall in love. Shenanigans, both cute romance-novel-esque and angsty character development ensue as each person tries to hide their affair from their respective spouses while continuing their relationship with their new partner.

   Language:

   English

   Words:

   18,077

   Chapters:

   2/?

   Comments:

   26

   Kudos:

   37

   Bookmarks:

   5

   Hits:

   746