1 - 20 of 72 Works in Error Sans/Reapertale Sans (Undertale)
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Summary
A collection of Undertale UTMV one-shots and small drabbles that I don't want to make entire stories for.
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Destructivedeath as told through music by Notcarefulfrog
Fandoms: Undertale (Video Game)
10 Oct 2025
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This is me picking and choosing songs from my Destructivedeath playlist to turn into a story, soooooo
Ch1: I Hear A Symphony, Cody Fry (Complete)
Ch2: The Water Is Fine, Chloe Ament (Complete)
Ch3: Wicked Game, Ursine Vulpine (Complete)
Ch4: Tongues & Teeth, The Crane Wives (Complete)
Ch5: Don't Blame Me, Taylor Swift (In Progress)
Ch6: Me and My Husband, Mitski (Not Yet)Keep in mind that Error's text may be hard to read. If at any point you find it too hard to read don't be afraid to let me know and I'll actually go through and add a translation. I'm just too lazy to do so until someone complains.
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A tale of a lost Geno, a found Error, and a sad lover who lost and found both of them at completely different times; Reaper.
Day 8 Prompt 26
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- Part 8 of Fictober 2025
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An Errortober challenge to myself to write a fanfiction cenetered around the best Out-Code in the multiverse: Error!
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Immortal (The Afterdeath/kind-of-destructivedeath fic that took me 4 years to write lol) by App1eS0uce
Fandoms: Undertale (Video Game)
13 Sep 2025
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Exploration, wonder, and curiosity. Things that weren’t new to Reaper, though, it had been centuries since he’s had a question and craved the answer, like his partner.
His partner had completely changed the way he viewed life.
Life becomes pointless eventually, no matter how hard you try.
You could see the world in color, with wonder and amazement. But acting and lying becomes tiring, he found out centuries ago.
And yet, with this mere mortal, accidentally stumbling into his life, existence seemed a little more interesting.
Even if he's seen it all, experienced it all, knew it all,
It was like living for the first time all over again.
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The story follows Nightmare, a young skeleton, who runs away from his parents' castle after being locked in his room by a curse. Desperate and lonely, he is found and rescued and taken to a new castle where other skeletons live. In the castle, Nightmare finds comfort and support that welcomes him and promises him freedom and safety there. Despite the trauma and pain he still carries, Nightmare begins to feel like he can finally find a home and heal among the new friends he has made.
Or:
This is about when I was watching Barbie Magic of Pegasus, and I thought, what if it was Dream Annika and Nightmare Brietta and this came to my head and I ended up writing, here is the result.
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Ink always liked the idea of having friends, but his job as a protector of the Multiverse was always first, he has the creators sometimes, so it could always be worse! However, he had learned his lesson back in UnderFell, where his presence being know by the AU's Sans had caused UF!Sans to change in appearance slowly. He had learned that day that the knowledge he has is dangerous, and that he needs to be more careful.
He didn't know that sometimes other things can cause awareness too, or that he wouldn't be alone for much longer....
OR, Ink tries to stop others from changing into something else, but things keep happening out of their control.
(Idk if I'll change the summary but whatever fuck it we ball)(also the first half already happened & all chapters will likely be named after a song with with lyrics from one.)
(Lyrics will also likely be in notes)Series
- Part 1 of The Cryptidverse
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Reaper lost Geno a long time ago. Years passed, worlds changed. Their son, Goth, was long grown. But the pain never let go of the god of death. It lived in him like a weed woven from happiness and memory.
Error thought of himself as someone who didn't need family, warmth, happiness, a home — he didn't experience it, and the dead, broken feeling inside when he looked at something like that from the sidelines, was was just that. a mistake. He shunned others, and they shunned him back.
This was how it was supposed to go on — quiet, silent, lonely, meaningless.
Until Error began to remember something. Something that had been hidden for years in his memory, something that was breaking him, and something that caused Error to suddenly find himself next to Reaper, withholding information about who he used to be.
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System Error: Accidental Acquisition of Children by Frikisbits231
Fandoms: Undertale (Video Game)
05 Sep 2025
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Error slid down, glued to the tree, his back to the ground, into the lush green grass on the ground. Later, he'd take a look at his current situation and possibly eliminate the place without a problem. Meanwhile, Error was resting, leaning against this comfortable, curvy tree, closing his eyes to feel something, something of the place.
Feel... the familiar ambient magic?
Still no monsters, humans, or standard souls around. Well, no one could hurt him if he got some rest, right?
This time, he mentally prepared himself and repeated the safety tests he felt like a mantra so he could get some rest.
He fell asleep shortly after.
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Sweetness with hints of security, calm, and the tranquility of dawning rest captured his senses. Something... familiar. Like... like chocolate melting on his tongue. He didn't know how he recognized that either. Still, he pulled the tongue out of his space, to capture it. He caught the sensations, almost becoming overwhelmed by them.
(O: The one where Error acquires an abandoned baby bone, which is, of course, his offspring too, yay...)
Series
- Part 3 of Glitches & Errors Fics
- Part 2 of Random Writing
- Part 1 of ❤️🩹💞 Caring for Babybones 💞🥰
- Part 1 of Oh, look at a fanfic with one of the fanchilds!
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Flash Fics for Hajime by Mochimunchies for Hajimeisamazing2020
Fandoms: Undertale (Video Game)
20 Apr 2025
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A short collection of flash fics/oneshots written for Hajime!
Includes:
Chapter 1 - DestructiveDeath + Errormare
Chapter 2 - Dadmare/NM Gang
Chapter 3 - Star Sans Poly + Error
Chapter 4 - Kross (Mer AU)
Chapter 5 - Errink (Fantasy AU)Series
- Part 6 of Flash Fiction Giftfics
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Cosas que quiero escribir ya, pero por la narrativa no puedo aún: Ya aquí by Frikisbits231
Fandoms: Undertale (Video Game)
18 Apr 2025
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¡Hola!
Esta nueva obra me servirá para poder escribir–lo que dice el título– y agregar dibujos que se me ocurrieron al momento, para mi serie de "Desplazamientos (forzados) en el multiverso" y en general los fanfics qué hay en ellas.
- Genocidio perdido en el multiverso.
- Las (Des)Aventuras de (After)–"Sans".
- Gemelo negativo: Lejos del árbol de mamá.
- Código espacial estrellado (Aka: Outer sin Tale)
- (y probablemente más, fanfics que todavía no escribo).¿Actualizaciones? Todavía no tengo días fijos.
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A short collection of flash fics/oneshots written for Sitirro!
Includes:
Chapter 1 - Afterdeath (Bride AU)
Chapter 2 - Star Sans Poly + Error (Fantasy AU)
Chapter 3 - Killermare (Royal AU)
Chapter 4 - DestructiveDeath (Feral AU)
Chapter 5 - Bad Sans PolySeries
- Part 5 of Flash Fiction Giftfics
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In the same AU as my Story "Sir these are Bitties", on the other side of the Multiverse, a Gaster finds shards of a soul. The soul of the Monster that Reaper can not find.
Reaper will soon have to take care of the tiny Bitties crafted after his lost love.
*** Some Chapters have Artwork.
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Just some short stories about your favourite Sans AUs rare pairs
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Error is pretty sure it's all Ink's fault, 'it's always the Creator's fault,' Geno agrees.
Series
- Part 1 of ☆★(Forced) Displacements in the Multiverse☆★
- Part 2 of Glitches & Errors Fics
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A Failed Kinktober Attempt (2023) by PerpetuallyTired_PT
Fandoms: Undertale (Video Game)
09 Sep 2024
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I’m doing kinktober for the first time!! (edit: and I failed!! Will still upload this whenever I can get around to it!)
First chapter will be an index with information about and links to each chapter/day. More in depth tags and summaries can be found inside, have fun!
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Geno y Reaper quieren experimentar lo que es el swinger ¿Y qué mejor opción que hacerlo con Ink y Error?
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In Daelth, where dark creatures rule, a former assassin from the ancient order of the Silver Knights: Killer, tries to survive in a world steeped in terror and darkness. With his sanity in tatters, he becomes a pawn in a deadly game, where a contract sealed with a rose and a bloody moon will define his destiny. How far will he fulfill his contract in a world where light is just a memory?
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One day, Geno went missing. No one knows where he went or what happened to him, not even Reaper. At least, that’s what everyone thinks.
Nightmare begins to get suspicious when Error becomes more flighty than usual. He comes to conclusions that aren’t necessarily correct nor incorrect.
These two statements are more interconnected than they appear at first glance.