fireflyfall
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Summary
“Did you know that the skies are fake?”
As a nine year-old former Khaenri’an prince, Kaeya knows many things they really shouldn’t. About Gnoses, for example. Their future adoptive family, for another. About the curse that has befallen their people, the secrets of several archons, the birds and the bees, the future of Teyvat as a whole... all thanks to their memories of a past life where they were a hot mess of a college student who had no idea what they were doing and played a certain popular gacha game.
Kaeya still has no idea what they are doing, and this time lives are riding on their decisions. As things stand, their adoptive father is doomed to die on their brother’s eighteenth birthday. So they have to figure out how to prevent a premeditated murder via Fatui Harbinger within eight years, while also hiding nearly every core facet of themself for their entire childhood - because Kaeya is so fundamentally terrified of rejection that they cannot reveal their true self to anyone. Not even the people they love and trust most.
Time does not heal all wounds. Not without proper treatment - and Kaeya, who never lets anyone know them in their entirety, has left theirs to fester.
Series
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a shitpost in an unforever number of parts by fireflyfall
Fandoms: Homestuck, Naruto, Harry Potter - J. K. Rowling, Danny Phantom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 名探偵コナン | Detective Conan | Case Closed, 怪物事変 | Kemono Jihen (Manga), 怪物事変 | Kemono Jihen | Monster Incidents (Anime), 전지적 독자 시점 - 싱숑 | Omniscient Reader - Sing-Shong, Minecraft (Video Game), Video Blogging RPF, Dream SMP, Octopath Traveler (Video Game), キミガシネ | Kimi ga Shine | Your Turn To Die (Visual Novel), Batman - All Media Types, 原神 | Genshin Impact (Video Game), Avatar: The Last Airbender
15 Dec 2023
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Summary
Where I will post snippets of self-inserts that are just plot bunnies I can't shake or entertaining enough that they have been officially cleared to leave the deep, dark recesses of what most people will call a 'Google Docs'. This depends entirely on my mood and current fandom of obsession, so some may be single-scene one-shots while others might be vaguely continuous.
The Latest Shitpost:
(Detective Conan)
Shinichi hovers over the body. It’s been hours and it hasn’t stirred. Shinichi isn’t sure if it ever will. It feels weird to call the child lying on the ground an it, but that’s... basically what it is.
Because that’s Shinichi’s body. Ghosts are apparently real, because Shinichi is one now. Somehow, the poison he was force-fed had shrunken his body on top of ejecting his consciousness from it. His body, which is somehow still breathing despite Shinichi not being attached to it.
Then the security guards arrive, and his body wakes up.
Series
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Vision of the Miraculous by fireflyfall, GalaxyBreath
Fandoms: 原神 | Genshin Impact (Video Game), Miraculous Ladybug
23 Aug 2023
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Summary
The thing about being a teenaged superhero is that no one ever tells you how much it sucks. None of them would trade the friends they’d found in each other for the world, but it’s unbelievably stressful. Having to keep a secret identity while trying not to flunk out of school is already bad enough. Add on the fact that not even your teammates are allowed to know your identity, your supervillain being able to turn you against the city if you feel too much negative emotions about anything, and his ability to read his victims’ minds?
The heroes will be lucky if they defeat Hawkmoth before any of them graduate.
(Of course, Kaeya already knows his brother is the famous Ladybug hero Scararouge. Really, only a Ragnvindr could pull off that shade of violently red hair.)
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the bounds of spacetime cannot hold us down by fireflyfall
Fandoms: Minecraft (Video Game), Video Blogging RPF, キミガシネ | Kimi ga Shine | Your Turn To Die (Visual Novel), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Haikyuu!!, Harry Potter - J. K. Rowling, 原神 | Genshin Impact (Video Game)
20 Apr 2023
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Summary
For all my time travel AU's, reincarnation/transmigration-type crossovers, and basically anything that falls under the umbrella of time travel or dimension travel. And just crossovers in general actually.
Current Destination in Spacetime:
(Kimi ga Shine / Genshin Impact)
The Eleventh Fatui Harbinger lies before him, unarmed and completely defenseless. The red key Xingqiu had used to unlock his own restrains weighs heavy in the palm of his hand.
A bitter expression crosses Childe’s face. His empty blue eyes bore into Xingqiu’s very soul. “Ah. So you’re going to let me die.”
Xingqiu’s hands curl into fists. The edges of the key dig into his palm. “I didn’t say that.”
“I can see it on your face, comrade. You’re considering it.” Childe smiles. Xingqiu hates it. He’s seen a plethora of fake smiles from the Harbinger before, but even those had some kind of substance to them. The smile on his face now is just... empty. “I can’t say I blame you.”
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Summary
Life as Gamzee Makara isn't exactly the happiest one. It's certainly not the worst, but- it's not great. It doesn't help that they're wholly unaccustomed to the merciless brutality of the Alternian lifestyle, too used to the idyllic peace of a suburban Earth town.
Most trolls are hardened by their harsh circumstances. Violence is natural to them, because they have never known anything else. Gamzee has. They know the world can be better - have lived in a world where things are better - and that makes it difficult to cope.
And as if that weren't enough already, the imminent Doom of the timeline looms over their head - their very existence threatens the lives of everyone they have ever known. If they don't keep things the same, their timeline will diverge from the Alpha and everyone will die. And they will have no one to blame but themself.
No matter how desperately they wish to, they can't save everyone. It's all that Gamzee can do to preserve the livelihoods of the few who are destined to survive.
Series
Recent series
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the far too many self-insert aus, the infinite electric boogaloo by fireflyfall
Fandom Avatar: The Last Airbender, Batman - All Media Types, Danny Phantom, Dream SMP, Harry Potter - J. K. Rowling, Homestuck, Minecraft (Video Game), Naruto, Octopath Traveler (Video Game), The Magnus Archives (Podcast), Video Blogging RPF, Villain to Kill (Webcomic), キミガシネ | Kimi ga Shine | Your Turn To Die (Visual Novel), 亜人 - 三浦追儺 & 桜井画門 | Ajin - Miura Tsuina & Sakurai Gamon (Anime & Manga), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 原神 | Genshin Impact (Video Game), 名探偵コナン | Detective Conan | Case Closed, 怪物事変 | Kemono Jihen (Manga), 怪物事変 | Kemono Jihen | Monster Incidents (Anime), 빌런투킬 | Villain to Kill (Webcomic), 전지적 독자 시점 - 싱숑 | Omniscient Reader - Sing-Shong
10 Nov 2025
Summary
What it says on the tin.
AKA: somewhere for me to gather all of my posted self-inserts in one place, because i'd never be able to keep track of them all otherwise. (I really need to start branching out into other genres that aren't my well-worn niche of obscure self-inserts lmao.)
- Words:
- 166,226
- Works:
- 12
- Bookmarks:
- 104
Recent bookmarks
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Sometimes a home is a child inventor, her robot sister, and a sinner with amnesia by LavenderTownsGhost
Fandoms: 原神 | Genshin Impact (Video Game)
23 Aug 2026
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Summary
More than a year before the Rächer of Solnari is pieced together and begins his attack on Nod-Krai, a heavily wounded man is found unconscious at a crater left by the ‘Boom and Blast Kuuvahki Cannon’. All he can remember is his own name, and the drive to find someone named “Tholindis”.
Aino feels guilty over the harm her invention inadvertently caused, so she offers him a place to stay while she builds him a new arm. As Rerir finds his bearings within Nasha Town, he wonders if this is what it’s like to have a ‘home’. But as his memories slowly return, and he remembers more of what he did in the past, he wonders…
Does a Sinner even deserve peace?(Updates Thursdays/Fridays)
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Summary
"I grant you, Scribe Alhaitham, a second chance.
Please… Save this world."
Alhaitham brushes with death, believing himself to be a ruined Teyvat's last survivor. As everything fades into darkness, it turns out that someone had arrived to his rescue, bringing with them a little wind spirit carrying the faint powers of Time.
Finding himself in the past, in a Teyvat not yet marred by the Abyss, Alhaitham realizes that he may just be Teyvat's last hope. As the only one left of the research team dedicated to uncovering the source of the Calamity, Alhaitham must now piece together the last fragments of the puzzle in the past, to save the future.
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Summary
The first thing Childe sees when he enters the room is a colossal mech. It rises tall enough that he needs to crane his neck just to see the top of it—an absolute behemoth of metal and divine energy that pulses through the room in waves. Even half destroyed, the size alone is enough to evoke fear.
The second thing he sees is Scaramouche.
The Balladeer hangs suspended high above the ground, a slight figure against the monstrous architecture of the vessel behind him. The cables that bind him shimmer like cosmic veins of light, leaving him dangling precariously as he claws at the empty air. The scream that tears through the chamber is nothing he's ever heard from Scaramouche. None of the usual venom he's come to associate with him. Just raw desperation.
And then, The Balladeer falls.
or;
Childe doesn't give up on his mission to find the Electro Gnosis.
Bookmarked by fireflyfall
21 Aug 2026
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wings of feathers, tails, and fin tips by eedsknees for VermillionCerulean
Fandoms: 原神 | Genshin Impact (Video Game)
29 Jan 2024
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Summary
Zhongli. Beidou blinks, taking in the man for all of his worth (or lack thereof, as she’s heard). His long hair that sits messy and askew, his sopping wet business attire, – extremely unfit for battle – his relatively… normal appearance. From how the crew talks about him, it’s hard to process, is all. ”This is Zhongli?”
Another silence fills the cabin. Then; a brief, “you didn’t know?” from Yinxing’s lips as she stands, hustling to gather a few more supplies; bandages, mostly.
“I thought Zhongli was a consultant for the funeral parlor,” Beidou mutters. “Not a fighter. I’ve heard the rumors about him, of course, but I just wasn’t expecting–” Beidou waves vaguely towards his limp body, “–this.”
OR:
An alternate universe in which Zhongli tries to fight Osial, loses, and ends up being taken care of aboard The Alcor.
Bookmarked by fireflyfall
21 Aug 2026
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Surrounded by Idiots: Teyvat Edition by mauve_angel_draws
Fandoms: 原神 | Genshin Impact (Video Game)
02 Aug 2026
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Summary
To a man exhausted by the incompetence of his coworkers, there was only one Holy Grail: Surrounded by Idiots by Thomas Erikson.
He bought it on a rainy Tuesday and completely absorbed it. The Four-Color Personality Model—Red, Yellow, Green, and Blue—became his Bible. Human madness finally made sense. It was the last book he’d ever love; on his way to buy the sequel, Surrounded by Liars, a stray truck violently ended his corporate misery.
Instead of the void, he woke up behind a massive oak desk. He had transmigrated as Eroch, the doomed, corrupt bureaucrat from Genshin Impact destined to collude with mad scientists, orchestrate a traumatic cover-up, and die a traitor.
It is Day One of his promotion to Inspector of the Knights of Favonius. Weaponless, without a Vision, and sitting on a political time bomb, he only has one tool: a fully memorized behavioral psychology book. He never got to read Surrounded by Liars, a massive shame since Mondstadt is full of them. But Eroch takes a deep breath and prepares to treat Teyvat like a toxic corporate office.
TL;DR: Your author wants to see if the principles of Surrounded by Idiots can be applied to Genshin Impact.
Series
- Part 11 of Reincarnation, Self-Inserts, and OCs