1 - 20 of 8,557 Works in Sans (Undertale)/Reader
Navigation
Listing Works
-
Tags
Summary
After the pacifist ending of Undertale, the monsters arrive in the surface to find a human kingdom. In this medieval AU, Sans and (The reader) Princess Rosaline fall in love.
-
Tags
Summary
Three years after the Barrier, integration exists on paper. In practice, it's a quiet disaster.
Monsters have basic rights, documentation, designated residential zones. There are laws that protect them in theory. But social rejection runs deep in ways that can't be proven, and politics moves at a crawl because no legislator wants to burn votes defending them.
So monsters did what they've always done: they built their own.
Two, maybe three neighborhoods in the big cities. Bars, workshops, makeshift clinics, night markets. Humans don't go in. The ones who do are either very curious, very desperate, or very stupid.
You're all three. You've been all three for months now, fighting in a circuit that pays well enough to keep you from asking yourself the wrong questions.
Fell Sans doesn't ask questions either. He just has answers you'd rather not hear.
No good deed goes unpunished. But then again, nothing you've done qualifies as a good deed.
-
Tags
Summary
Trading her freedom away for the safety of another, this book loving woman finds herself in a strange castle, guarded by the castle’s inhabitants. Unbeknownst to her, these four have another fate in mind for her… they’d agreed to her deal in hopes that she could break their master’s "curse".
With a heart as firmly guarded as their realm, the dark beast that reigns over the castle is resigned to a future alone and unloved. With a job as nasty as his self image, there’s no way this kind stranger could ever care to look upon him… right? Can a caring hand light a fire in this realm of permanent midnight?
A tale as old as time, told in a new way.
-
Tags
Summary
This is a song fic for fever (sung by Peggy lee) that i wrote in half an hour (I couldn't sleep).
Sans could never keep his eyes off of you, not even for a second.
You could never escape the feeling of eyes watching your every move.- Language:
- English
- Words:
- 604
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 26
-
Tags
Summary
You've always been a recluse. When you resided in snowdin, you stayed tucked up in your woodland cottage. Now you're on the surface, you stay in your cottage in the middle of the woods surrounding Ebott and you're happy to be alone.
So when an injured skeleton flips your peaceful world upside down, you're not a happy batSeries
- Part 1 of Fangs dig deep
-
Tags
Summary
Continuation of "Pretty Like A Car Crash"
Crumble must prove to the facility that she can handle whatever is thrown at her, except sometimes the problems come from the skeletons that are supposed to help her.
It's up to her to prove everyone wrong.
Series
- Part 2 of Crumble and her Crumbling Life
-
Tags
Summary
With no memories and nowhere to go, you’ve been shuffled from universe to universe as the secret healer of the guardian of positivity for a decade. But years without a place to truly call home would leave anyone a little stir-crazy. So when you find a knife-wielding skeleton in the woods on your morning jog, you go against your better judgement and heal him. At least he’s nice enough to pay you back with outings that are starting to feel a whole lot like dates.
Too bad that skeleton is actually one of the enemies you’re supposed to be fighting against, and your existence is about to become not-so-secret to his boss.
-
Tags
Summary
There are a number of little ideas within my head—or strikes of inspiration from fellow Undertale creators—that I'd love to write about! But they need a home...
Welcome to Reader x Everyone in the Multiverse!
I don't have a schedule, but I try to post often! I hope you enjoy these stories :3c
-
Orion (Megaforce) x Fem! Reader (Smut One-Shot)- Sliver Lover by DanteDMCFan02
Fandoms: Power Rangers, Power Rangers Megaforce
18 Feb 2026
Tags
- Language:
- English
- Words:
- 731
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 91
-
Tags
Summary
NSFW Epilogue of my main fic ''The Reluctant Crown''
It follows the plot after the main fic and then time skips a bit. Can be read by its own I suppose but I highly suggest reading the main fic first!
Series
- Part 2 of The Reluctant Chronicles
-
Tags
Summary
Trying to survive in an economy where monsters have emerged years ago, it even made your survival harder. To make it worse, A sudden snowstorm is coming. you couldn't stay in dark alleyways anymore due to violent people and monsters mostly creeping there, the streets were dangerous as well, it's too self explanatory.
Having no choice, you decided to break into abandoned houses- or you assume so. You've been doing this for months now, and it has been the worst thing to do ever, but surviving and safety comes first. The owners would kick you out every time, but atleast one day of sleeping comfortably was worth the trouble.
What happens when a human breaks inside an empty lodge, not knowing some skeletons are arriving home to rest their bones?
-
Tags
Summary
Meet Grace a young bar owner with secret she holds tight but what happens when she meets a certain skeleton monster with a big 'family' Will her secrets stay hidden or will the world know.
(I am bad at tagging sorry.)
All the aus here are undertale, underfell, underswap, Swapfell purple, Swapfell red, Fellswap gold, Mafiatale, Mafiafell, Mafiaswap, the gaster brothers, horrortale lusttale, and lustfell. -
Tags
Summary
One day, you meet a skeleton. He's funny and easy to get along with, but he's strange, too. Not because he's a skeleton. Because he remembers you, though you know you've never met him before.
-
Tags
Summary
To think, it all started because you found a skeleton in the woods. Not the strangest thing you've found, but definitely one of the best.
Sans is just thankful that you were understanding of his situation when you offered him and his 'family' a place to stay.
Do dogs like bones? Of course they do! But you're about to find out just how much a wolf likes bones.
As of Feb 2026, Ch 1-3 have been updated/redone.
Series
- Part 1 of Wolfish Wonder
-
Tags
Summary
You're a grad student at a house party. How many skeletons are you running into there? At least one you didn't expect.
(This explains nothing. Please read if you like Sans/Reader romance slice of life with plot, character relationships, fluff and eventual smut. Underfell headcannon is being used.)
(Time for a second note to reemphasize PLOT. Drowning in plot. Plot for days. Send help.)
(None of this is really about college.)
Reading Note:
I don't know if this really matters, but I write and read everything in dark mode--so if you want the authentic author experience, that's what I'm seeing! -
Tags
Summary
You've been friends with the skeletons since they moved in a few months ago. You consider them all to be your friends, best friends even. You decided to invite your twin over to meet them after they moved in with you.
For some reason all the skeletons seem to have fallen for your twin and they ask you for advice. You're fine with it since your twin likes them too!
But then why does it hurt so much?
(rating has been bumped due to one of the jobs the reader has)
-
Admirer from afar by VeiledVillanous
Fandoms: Undertale (Video Game), Dreamtale - Fandom
17 Feb 2026
Tags
Summary
' Similing to yourself, afterall its not like he could tell you himself afterall he didn't know that the two of you were destined to be together forever, now did he? '
Stalker!Reader x Nightmare Sans.
Looks like your baby left you a little video to watch. I wonder how you'll react to it?
- Language:
- English
- Words:
- 1,849
- Chapters:
- 1/1
- Kudos:
- 10
- Hits:
- 129
-
Tags
Summary
After lunch, you both walked to the very edge of the park, past the boutiques and bustling playgrounds, and onto a dirt path winding through a small patch of greenery.
It must have been an odd sight to see— A human blabbing their mouth at a (pretty scary-looking) monster who may or may not be speedwalking to get them off his tail.
-
Tags
Summary
During a mission, horror is hit by magic, good thing someone saves him
-
A Poor Imitation of Nonchalance by KittyCatPaw11 for Mewpet
Fandoms: Undertale (Video Game)
17 Feb 2026
Tags
Summary
Red is self-destructive upon having vulnerabilities.
His feelings are taken out on alcohol, an old habit. And on you, a new variable in his life.Or,
Red is not handling his crush on you very well.