Kastaborous
Fandoms
Recent works
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a nightmare? this is a tuesday by Kastaborous
Fandoms: Biohazard | Resident Evil (Gameverse), Bloodborne (Video Game)
16 Jun 2026
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Summary
Leon is getting too old for this shit. He is (somehow) a full fifty years old. And he’s been wading into bloodsoaked warzones to fight monsters for thirty years. At this point, very little surprises him anymore. But falling through a blood puddle and waking up in a Victorian gothic nightmare is pushing it.
But nonetheless, it’s familiar. Monsters stalk the streets, the smell of blood so thick he can taste it.
Leon sighs, rubbing his face. “Just another Tuesday.”
…
Or, Leon S. Kennedy post Resident Evil Requiem gets dropped into the city of Yharnam. It goes better and about as bad as you think. (No knowledge of Bloodborne required!)
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nymph (and a rookie in raccoon) by Kastaborous
Fandoms: Biohazard | Resident Evil (Gameverse)
25 May 2026
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Summary
In biology, a nymph is the juvenile form of some invertebrates, particularly insects. Rookie Leon S. Kennedy, in Raccoon City in the midst of the worst night of his life, is not an insect. Until he is, at which point his usual story takes a sharp left turn and goes straight off a cliff.
Or, an AU of an AU where Leon, in the middle of Raccoon City, gets infected by a plaga six years too early. Becoming a monster in a city filled with them is terrifying enough, but when your options are adapt or die, you take what you can to survive. Plus, it has its perks. Being bite proof is one of them.
(This is self-indulgent and I'm writing snippets non-chronologically, so don't be surprised if chapters move around.)
Series
- Part 2 of the bugverse
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how many seconds in eternity by Kastaborous
Fandoms: The Legend of Zelda & Related Fandoms, The Legend of Zelda: Breath of the Wild/Tears of the Kingdom
15 Apr 2026
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Summary
“How many seconds are there in eternity?” the King asked.
And the Shepherd Boy said: “To the south is a mountain of pure diamond. Two and a half miles high, two and a half miles wide, and two and a half miles deep. Every hundred years, a little bird comes and sharpens its beak on the diamond mountain. When the entire mountain has been chiselled away, then the first second of eternity will be over."
…
The stone is warm in Zelda’s palm. Like this it looks so small, unassuming. And yet it is a crystalized teardrop of divinity, a fragment of the powers that shaped the world. It looks, Zelda thinks, if she tilts her head just right, almost like a little embryo. A Dragon, ready to be born.
Or, a glimpse into eternity.
Series
- Part 6 of The Wilds of Hyrule, Old and New
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a rookie and a veteran (and a sprinkle of insect) by Kastaborous
Fandoms: Biohazard | Resident Evil (Gameverse)
31 Mar 2026
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Summary
“Holy shit.”
That was not Mike’s voice. That was not the voice of any of the base’s residents. Leon whirled to the speaker only to come face to face with… himself? Or more correctly, a B.O.W. that looked unnervingly similar to himself. It was a bit shorter, carapace a much lighter brown and spikes not nearly as elongated, and staring at him with mouth agape.
“Who are you?” Leon growled, and the B.O.W. raised its hands defensively.
“Leon! Leon Kennedy!” the B.O.W. said and Leon just… stopped. Because… what?
...
Or a VERY self indulgent 5K words where I take two bugs and have them meet. Because I can. (A time travel of AU of an AU)
Series
- Part 2 of the plague of carapace
- Part 3 of the bugverse
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Sophist by Kastaborous
Fandoms: Fullmetal Alchemist - All Media Types, Fullmetal Alchemist: Brotherhood & Manga
26 Mar 2026
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Summary
“See, that’s something that I don’t, that I can’t, get,” Edward admitted, shaking his head. “I don’t believe in a God, especially not one that people claim is good or just or knows what is ‘right’. The Universe isn’t just or merciful, that’s something humans have to make for ourselves. The Universe just… Is.”
“You’ve seen the Thing beyond the Gate,” Roy said idly. It wasn’t something he liked to recall, but he did remember It. It was hard not to… especially when It was the last thing he’d seen before his world went dark. In any case… “That thing calls Itself God.”
Edward rolled his eyes. “It also calls itself Truth.”
…
Or, an exploration of Edward Elric, the Universe, and God.
Series
- Part 4 of you, me, and god makes three
Recent series
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Summary
Or, all my nonsense relating to bug leon. No, I don't know why its infected my brain like this.
Inspiration AUs in no particular order:
- InfectionRE AU
- RookieBug AU
- Biblically Accurate Bug- Words:
- 78,666
- Works:
- 3
- Bookmarks:
- 19
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- Words:
- 69,496
- Works:
- 2
- Bookmarks:
- 56
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The Wilds of Hyrule, Old and New by Kastaborous
Fandom The Legend of Zelda & Related Fandoms, The Legend of Zelda: Breath of the Wild, The Legend of Zelda: Breath of the Wild/Tears of the Kingdom, The Legend of Zelda: Hyrule Warriors
15 Apr 2026
Summary
Hyrule is a very, very old place. It has history stretching back tens of thousands of years, across multiple timelines. It, and it's residents, are frequently a little more than they first appear.
- Words:
- 8,595
- Works:
- 6
- Bookmarks:
- 69
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you, me, and god makes three by Kastaborous
Fandom Fullmetal Alchemist - All Media Types, Fullmetal Alchemist: Brotherhood & Manga
26 Mar 2026
Summary
An unconnected assortment of my various FMA fics with a heavy focus on Ed, Truth, and assorted silly / existential times.
I have a few more ideas floating about for future stories, so check here for them if you're interested.
- Words:
- 35,838
- Works:
- 4
- Bookmarks:
- 540
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Of Heroes, Villains & Alchemists by Kastaborous
Fandom Fullmetal Alchemist - All Media Types, Fullmetal Alchemist: Brotherhood & Manga, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
19 Feb 2025
Summary
In unearthing the Nomu Factory, the Heroes and police of Japan discovered a body. This was not unexpected, but the nationality and uniform of the corpse in question… that was. Because this failed Nomu wore the uniform of Amestris, a war torn nation from the isolated continent of Atossa, where Quirks and modern electronics had never developed and never worked.
Edward Elric hoped he could retire from military service in peace, traveling Amestris while his brother Alphonse went to Xing. This is put on hold when now-Führer Mustang asks him to travel to the Outside, to the world beyond that was barricaded for centuries after the development of something called ‘Quirks’. A soldier has been killed and Amestris needs to know more about the Outside.
Or, Edward Elric and Amestris meet the world of Heroes and Villains.
- Words:
- 187,061
- Works:
- 4
- Bookmarks:
- 683
Recent bookmarks
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Summary
"Hey, we're a team, right?"
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A series dedicated to friendship of Leon and Ashley.
- Words:
- 26,764
- Works:
- 5
- Bookmarks:
- 118
Bookmarked by Kastaborous
06 Jul 2026
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Summary
Leon was lucky enough to survive his first day as a rookie cop in Raccoon City. Unfortunately, he and all other survivors brought an unexpected and unwanted souvenir - a T-virus infection. Unlike the variant that zombifies its victims, this version keeps its victims human but is an enduring and incurable infection that only gets worse with time.
Leon has an unfortunately timed flare-up down in the mines.Or, RE4re Leon experiences T-virus symptoms like in RE9
Bookmarked by Kastaborous
06 Jul 2026
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Dog Days Are Over by Lliinno, WeepingWings for BlackVultures
Fandoms: Biohazard | Resident Evil (Gameverse)
14 Dec 2025
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Summary
It was unexplainable really, Chris' ability to turn into a wolf. To swap out his skin for that of another.
To transform into a creature far different than what the movies say he should be like.
That instead of becoming an uncontrollable beast. A monster driven into a wild frenzy under the light of the full moon until he was sick with bloodlust and hysteria, overcome with mania and overwhelmed by instinct. He was able to control the change. Was able to slip between one form and another whenever he wanted to.
Well, unless he got himself injured.
And given his luck? That exactly what he did. And in the presence of Leon Kennedy no less.
Bookmarked by Kastaborous
03 Jul 2026
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Summary
Leon S. Kennedy is in the belly of the beast, the heart of darkness, and all Luis can do is wait. No mid-mission updates, as agreed. Leon promised to call him only in two scenarios- success, or failure.
Bookmarked by Kastaborous
03 Jul 2026
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Summary
Grace has a problem. Becoming a single mom is a little hard when you're in your twenties and still haven't gotten your health quite where it should be yet. Luckily she has someone just a call away who might be able to help while she gets her wisdom teeth out. And his husband isn't too bad either.
- Language:
- English
- Words:
- 3,746
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 12
- Kudos:
- 89
- Bookmarks:
- 15
- Hits:
- 482
Bookmarked by Kastaborous
02 Jul 2026