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1. Welcome Back, Mountain by EXOChen21fan

   Fandoms: Harry Potter - J. K. Rowling, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Complete Work

   07 Aug 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Akaza | Hakuji (Kimetsu no Yaiba)/Harry Potter
   • Harry Potter
   • Akaza | Hakuji (Kimetsu no Yaiba)
   • Douma (Kimetsu no Yaiba)
   • Kokushibou | Tsugikuni Michikatsu
   • Uzui Tengen
   • Ubuyashiki Kagaya
   • Demon Slayer Corps Ensemble (Kimetsu no Yaiba)
   • Upper Demon Moons Ensemble (Kimetsu no Yaiba)
   • Alternate Universe
   • Reincarnated Harry Potter
   • Blind Harry Potter
   • Feminine Harry Potter
   • Escort Harry Potter
   • Musician Harry Potter
   • Slow Burn
   • Fluff and Angst
   • Hurt/Comfort
   • Emotional Hurt/Comfort
   • Found Family
   • Enemies to Friends
   • Redemption
   • Protective Akaza | Hakuji (Kimetsu no Yaiba)
   • Soft Akaza | Hakuji (Kimetsu no Yaiba)
   • Akaza | Hakuji is Bad at Feelings (Kimetsu no Yaiba)
   • Tea
   • Music
   • Moonlight
   • Slice of Life
   • Canon-Typical Violence
   • Demons
   • Hashira | Pillars Training Arc (Kimetsu no Yaiba)
   • Alternate Universe - Canon Divergence
   • Hopeful Ending
   • Comfort
   • Albino Harry Potter
   • Curvy Harry Potter
   • Koto Player Harry Potter
   • yoshiwara district
   • unlikely friendship
   • Akaza Learns to Feel
   • Muzan Kibutsuji is Confused
   • Doma being Doma
   • Kokushibo Has Feelings
   • Tengen Uzui Has Had Enough
   • Gentle Romance
   • Slow Emotional Healing
   • "Mountain"
   • Everyone Keeps Coming Back
   • Tea Solves Nothing (But It Helps)

   Summary

   Blind since birth, Harry spends his nights playing the koto in Yoshiwara's Red Lantern District, welcoming anyone who wishes to listen. What begins as a chance encounter with Akaza, Upper Moon Three, slowly grows into an impossible gathering of demons, Hashira, and lonely souls beneath lantern light. In a world defined by bloodshed and duty, Harry offers something far rarer: a place where monsters can set down their burdens, if only for a little while.

   Language:

   English

   Words:

   18,980

   Chapters:

   22/22

   Comments:

   14

   Kudos:

   141

   Bookmarks:

   52

   Hits:

   2,112