Fics like in my blood, all the sweet nothings

A lonely man mute from infancy, Tomioka Giyuu has been resigned to a life drifting aimlessly in a world that sees him as a burden or a nuisance, working the graveyard shift as a glorified janitor in a research facility connected to a port city's aquarium and carrying the weight of his grief with him. When the facility attains a new specimen, Giyuu finds himself building a connection with the most unlikely person: a person said to be a god from the depths of the Pacific Ocean, and a very much not-human person. After breaking the Asset, named "Rengoku," out of the facility, that connection only grows and inevitably reaches a precipice. AKA the one where Giyuu gets railed by a hot fish-man.

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1. A serpent, a snake, and a river by cloveliest (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
2. uh huh, honey by vividlyy (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
3. Blue by KuriKuri (鬼滅の刃 | Kimetsu no Yaiba (Manga))
4. 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))
5. bet i love harder by favspacetwink (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
6. Postcards to No One by stmangos (鬼滅の刃 | Kimetsu no Yaiba (Manga))
7. to tame, to be tamed by fitzefitcher (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
8. The Court(ing) of Tomioka Giyuu by cowboycorekimmi, sassiperere (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
9. the floating world by vividlyy (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
10. Struck Twice by Vaellean (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
11. Secrets well kept by Liatheus (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
12. big wave, small boat by spirallings (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
13. 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))
14. The Neverending Night by apodis (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
15. Can I Trust You With My Everything? by Manta_and_Matcha, ballzor (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
16. What You Wish For by KuriKuri (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
17. pillar of lies, pillar of truth by oshit (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
18. Breath (And How That Leads To Sex) by IReallyHateMyself (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))
19. Smoke and Mirrors by emilieee (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga))
20. peace in your violence by favspacetwink (鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga))