Fics like Secrets well kept

When Kyojuro comes homes from his latest mission grievously injured but alive, Senjuro is more than willing to devote himself to ensuring his brother's care. But the road to recovery is never so straightforward—and made all the more precarious when Senjuro accidentally stumbles upon his brother and his late-night visitor. In which Senjuro finds himself coming to an accord with a certain Upper Moon demon over mutual interest.

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1. Keep Breathing (And Don't Let Go) by Astre_Red (鬼滅の刃 | Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
2. On the edge of a suture by Liatheus (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
3. all this blue by Yoursplural (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
4. Because You Were Kind (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
5. little bunny, why are your eyes so red? by revanmooo (鬼滅の刃 | Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
6. Write Me the Kanji for Sun by AnOrdinaryButtercup (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
7. Bright Waters by Firezaster (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
8. The demon by silverynight (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
9. history through dance by osamugiris (僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 鬼滅の刃 | Kimetsu no Yaiba (Manga), more)
10. problems of the sane by rosetintedtears (僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
11. The Tide of Fate by CapoBeGone (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
12. The Doctor who Dances with the Dawn by Bunbunbun (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
13. Don't Forget to Breathe by Zyloa (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
14. Family Bonds by Grinch1234 (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
15. The Scent of Wisteria by SavWithaG (僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), more)
16. Sumiko by silverynight (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
17. Fleur de Lune by Zyloa (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
18. When Floodgates Burst by orphan_account (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
19. Kataware Doki by wxxxxxxxxr (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
20. thicker than water by Yoursplural (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))