Fics like check the black box

Hikaru words his wish differently, and leaves the mountain alive and wholly himself as a result. He leaves with a tag-along, though.

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1. covalent by chinxe (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
2. Heliotrope by Waiting_for_a_sunny_day (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
3. TOXOPLASMOSIS by anodymalion (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
4. Living through another by HikaruMyLuv (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
5. The Sublime and the Beautiful by anodymalion (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
6. all that devours by anodymalion (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
7. AMATEUR by allthingsunrelated (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
8. How to Tie a Bowline Knot by allthingsunrelated (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
9. what if we had time? by orphan_account (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
10. Dear Yoshiki by D3ru (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
11. a mouth like mine by lunatea (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
12. Now Swallow by faedemon (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
13. a place to call home by kentuckyfriedmegumi (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 呪術廻戦 | Jujutsu Kaisen (Manga), more)
14. The Algal Bloom by anodymalion (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
15. Yoshiki Ain't Gay by hey_its_leri (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
16. The Swallow Dreams of Summer by IDoNotBiteMyThumbAtYou (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
17. half alive by vavavavoom (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
18. In The Middle Of The Night by Val_Creative (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga))
19. the monster that was always here by Toothpaste_Fresh (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))
20. Half There, Half Not by Val_Creative (光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Manga), 光が死んだ夏 | Hikaru ga Shinda Natsu | The Summer Hikaru Died (Anime))