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   Shores of Infinity by Ylime_lemonade

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

   • Explicit
   • Graphic Depictions Of Violence
   • M/M
   • Work in Progress

   09 Apr 2026

   Tags

   • Graphic Depictions Of Violence
   • Douma/Kokushibou | Tsugikuni Michikatsu
   • Douma/Kotoha (Kimetsu no Yaiba)
   • Urogi/Nakime (Kimetsu no Yaiba)
   • Douma & Kokushibou | Tsugikuni Michikatsu
   • Akaza | Hakuji & Douma (Kimetsu no Yaiba)
   • Akaza | Hakuji & Douma & Kokushibou | Tsugikuni Michikatsu
   • Douma & Kotoha (Kimetsu no Yaiba)
   • Douma (Kimetsu no Yaiba)
   • Kokushibou | Tsugikuni Michikatsu
   • Akaza | Hakuji (Kimetsu no Yaiba)
   • Urogi (Kimetsu no Yaiba)
   • Aizetsu (Kimetsu no Yaiba)
   • Daki | Ume (Kimetsu no Yaiba)
   • Gyutaro (Kimetsu no Yaiba)
   • Enmu (Kimetsu no Yaiba)
   • Kochou Shinobu
   • Urokodaki Sakonji
   • Kibutsuji Muzan
   • Nakime (Kimetsu no Yaiba)
   • Tamayo (Kimetsu no Yaiba)
   • Kotoha (Kimetsu no Yaiba)
   • Alternate Universe - Pirate
   • Alternate Universe - 19th Century
   • Fantasy
   • Historical Inaccuracy
   • Slow Burn
   • Enemies to Friends to Lovers
   • Angst
   • Hurt No Comfort
   • Or maybe there is???
   • Enemies With Benefits
   • Pirate Captain!Kokushibo
   • Siren!Douma
   • nobody asked for this yet here I am writing it
   • kokushibo is WHIPPED
   • he pretends he's not but he is
   • Douma is a Little Shit (Kimetsu no Yaiba)
   • the kizuki are pirates aboard their ship called the Infinity
   • Top Kokushibou | Tsugikuni Michikatsu
   • Bottom Douma (Kimetsu no Yaiba)
   • kokushibo be waxing poetics and douma's not even awake yet
   • Eventual Smut
   • the relationships WILL happen trust
   • just....not for a long time'

   Summary

   [UPPER MOONS AS PIRATES AU]

   Kokushibo swept his gaze over the man’s body, or rather, creature’s body, suddenly noticing how the ears were not rounded but rather elongated. And that along the purple bruising of the neck, three distinct gills fluttered ever so slightly.

   “Captain,” Akaza whispered hoarsely. “That thing… that creature…”

   His voice dropped further.

   “It’s a siren.”

   Or: Captain Kokushibo and his pirate crew of the Infinity raid a ship, and discover a siren on board.

   Language:

   English

   Words:

   21,016

   Chapters:

   3/?

   Comments:

   56

   Kudos:

   85

   Bookmarks:

   17

   Hits:

   937

   Bookmarked by NotaCamera

   31 May 2026