Cryst4lB34st
Fandoms
Recent works
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Compass Nerves by Cryst4lB34st, Kobalt_Cat_YS
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Anime & Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
25 Feb 2026
Tags
Summary
Yuji’s body remembers a style he’s never learned: circular footwork and knuckle-driven counters akin to Destructive Death: Compass Needle. He feels “vectors” of killing intent rather than a flow of CE. Sukuna notices the archaic martial cadence and marks Yuji as different from the first possession.
Series
- Part 8 of Co-Authored Stories
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Rewinding our Wounds by Cryst4lB34st, Kobalt_Cat_YS
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 呪術廻戦 | Jujutsu Kaisen (Manga), 呪術廻戦 | Jujutsu Kaisen (Anime)
16 Jan 2026
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Summary
Displacement is terrifying, even after her escape from Overhaul she wasn’t sure of what to do as it was the only chance she had from escaping that place. Even then, her escape provided an opportunity - an opportunity that Eri has ever thought to dream. Not when she is constantly being cut open for Kai’s experiments to erase quirks. Here, she is accepted. Here, she is loved. Here, she has the strongest protecting her - her Angel.
Series
- Part 2 of Plot Device Kid's Manga Collection
- Part 7 of Co-Authored Stories
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Himiko's tale by Cryst4lB34st, Kobalt_Cat_YS
Fandoms: 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), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
19 Apr 2024
Tags
Summary
Toga while running to recover from the fight against Curious gets sent to KnY by a childs quirk and now must survive in this new world
Series
- Part 3 of Co-Authored Stories
- Part 1 of Plot Device Kid's Manga Collection
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Demonolgy by Cryst4lB34st, Kobalt_Cat_YS
Fandoms: 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)
05 Sep 2022
Tags
Summary
Izuku gets turned into a demon, woow
Series
- Part 6 of Across the Veil
- Part 2 of Co-Authored Stories
- Part 1 of Demonology
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Late V-day special by Cryst4lB34st, Kobalt_Cat_YS
Fandoms: 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)
20 Feb 2022
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Summary
A tooth-rotting one-shot for valentines day with the Demon Humanitarians Hashiras.
Series
- Part 4 of Demonology
- Part 6 of Co-Authored Stories
Recent series
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Co-Authored Stories by Cryst4lB34st, Kobalt_Cat_YS
Fandom Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 呪術廻戦 | Jujutsu Kaisen (Anime & Manga), 呪術廻戦 | Jujutsu Kaisen (Anime), 呪術廻戦 | Jujutsu Kaisen (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
26 Feb 2026
Summary
Fics Co-Written with other authors is placed here. The majority of them may end up being crossovers but expect works to have a mixture of my own details and plots or another person's details and plots.
- Words:
- 382,632
- Works:
- 8
- Bookmarks:
- 4
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Plot Device Kid's Manga Collection by Cryst4lB34st, Kobalt_Cat_YS
Fandom 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 呪術廻戦 | Jujutsu Kaisen (Anime), 呪術廻戦 | Jujutsu Kaisen (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
16 Jan 2026
Summary
Alias: Plot Device
Quirk: Able to send anyone that has come into physical contact into any medium previous read or seen.
Likes: Prefers reading pre-quirk manga's with a few exceptions in current age.
- Words:
- 134,613
- Works:
- 2
- Bookmarks:
- 2
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Demonology by Cryst4lB34st, Kobalt_Cat_YS
Fandom 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), 鬼滅の刃 | Kimetsu no Yaiba (Manga)
05 Sep 2022
Summary
Alternate chapters with Demonology story
One-shots inspired by the canon fic or short stories added to it.
- Words:
- 185,671
- Works:
- 4
- Bookmarks:
- 17
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Across the Veil by Cryst4lB34st, Kobalt_Cat_YS
Fandom Ao no Exorcist | Blue Exorcist, Arrow (TV 2012), Dante's Inferno (Video Game), DC's Legends of Tomorrow (TV), Dragon Age II, How to Train Your Dragon (Movies), Supergirl (TV 2015), The Avengers (Marvel Movies), The Flash (TV 2014), Thor (Movies), Undertale (Video Game), 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)
05 Sep 2022
Summary
This features stories about one character going into other fandoms world and interacting with the residents there. Several stories will be AU's with slight changes to the character so expect OOC development or actions that may trigger readers.
- Words:
- 243,882
- Works:
- 6
- Bookmarks:
- 11
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Gods as Dragons by Cryst4lB34st
Fandom How to Train Your Dragon (Movies), The Avengers (Marvel Movies), Thor (Movies)
22 Feb 2019
Summary
This series focuses on characters being mythical creatures in different fandoms.
- Words:
- 14,947
- Works:
- 1
- Bookmarks:
- 12
Recent bookmarks
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yuuji gets expelled by Anonymous
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Manga), 呪術廻戦 | Jujutsu Kaisen (Anime)
01 Sep 2025
Tags
Summary
Yuuji gets mistaken for an omega and dives into the whacky world of curse sex in a desperate attempt to save his grades. And his life. And his dignity.
- Language:
- English
- Words:
- 50,966
- Chapters:
- 6/?
- Collections:
- 1
- Comments:
- 107
- Kudos:
- 543
- Bookmarks:
- 114
- Hits:
- 10,056
Bookmarked by Cryst4lB34st
20 Jul 2026
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Summary
The Borgia are gone and Ezio returns to Rome - to find that something came out of the Vault where he left the Apple of Eden.
- Language:
- English
- Words:
- 25,314
- Chapters:
- 7/7
- Comments:
- 387
- Kudos:
- 5,189
- Bookmarks:
- 980
- Hits:
- 70,864
Bookmarked by Cryst4lB34st
13 Jul 2026
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Summary
In which Monteriggioni has a significant vacancy and Desmond's timing is almost divine.
- Language:
- English
- Words:
- 55,545
- Chapters:
- 13/13
- Comments:
- 1,083
- Kudos:
- 7,613
- Bookmarks:
- 1,586
- Hits:
- 109,241
Bookmarked by Cryst4lB34st
12 Jul 2026
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Summary
In the library of Altaïr, Ezio isn't as ready to let go of his destiny as he thought.
In the Grand Temple, Desmond isn't ready to face his.- Language:
- English
- Words:
- 61,761
- Chapters:
- 18/18
- Comments:
- 1,380
- Kudos:
- 8,058
- Bookmarks:
- 2,000
- Hits:
- 133,976
Bookmarked by Cryst4lB34st
11 Jul 2026
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Tags
Summary
Juno did her best to lead him to her preferred fate, but the end is coming and Desmond has doubts.
- Language:
- English
- Words:
- 109,025
- Chapters:
- 24/24
- Comments:
- 1,794
- Kudos:
- 9,639
- Bookmarks:
- 2,745
- Hits:
- 214,189
Bookmarked by Cryst4lB34st
11 Jul 2026