1 - 20 of 8,331 Works in Sans (Undertale)/Reader
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a collection of one shots, all centered around sans and his alternate versions, for kinktober 2025. enjoy!
- Language:
- English
- Words:
- 1,550
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 5
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I know I know, it's supposed to be kinktober, but hey? Let's do Ausctober, sha'll we? sksks (CANCELLED)
there is no smut! but there will be some smoochie :D
different chapter, different au, different theme!
let's begin, sha'll we?
NOTICE!: Fuck this, my RL ain't allow me to do it, UGH I HATE IT SO MUCH but... I'm not gonna abandon this, instead, I'm gonna fill this with oneshot! or some scramble
Sorry I give up huhu
Chapter: 1. Remembering you (ut sans/reader)
Chapter: 2. A meeting with you is sweet… more sweet than the dessert (swap sans/reader)
Chapter: 3. How far? Another universe, baby. (fell sans/reader)
Chapter: 4. The way to the hospital (HT sans/reader)
Chapter: 5. - -
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Three years into college and of course shit hit the fan. Thankfully for you, your good friends Sans and Papyrus are able to help you and offer you a room in their house when things go sideways for you. The catch? You get to meet all of their family and join in on the chaos that is the Serif family.
What could possibly go wrong?
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Works for fictober 2025 on tumblr. Go check it out!
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- Part 4 of Fictober 2025
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beauty and the... skeleton monster? by bigtitsbiggerheart
Fandoms: Undertale (Video Game)
05 Oct 2025
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A blind date, your only hope to get the manchild who keeps pursuing you day after day to leave you the hell alone. Unfortunately, the skeleton monster with a bit more edge than finesse might lead to more than just a blind date.
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You'd never expected to be one of those people who bonded with a random stray, and if you did, you never expected it to turn out like this. The tiny... blob of an animal was cute, affectionate, and melted your heart before you'd even named him. Unfortunately, not everything is as it seems. You've met this lovely creature before, and he definitely remembers you...
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The Void Mage and The Skeleton by transgirlnamedafterarock
Fandoms: Undertale (Video Game)
05 Oct 2025
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A number of years after Frisk dusts Asgore, passing through the barrier never to return, a void mage living on Mount Ebott stumbles into an entrance to the underground searching for magical materials. Various encounters with a fantastical race called 'Monsters' occur as she makes her way through the underground, doing her best to save everyone she can. Forced to accept the truth that things are much worse for monster kind than ever before, she will do everything to save them from a terrible end. Can she do what she needs to? Or will she succumb to the weight of an entire people's fate resting on her shoulders.
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Gonna try my hand at this for the first time! These will all be Sans/ Reader, but might play around with various AU's I don't normally mess with.
Might also sneak some canon or not canon scenes in here from my fics if they fit hehehe.
Also going to try to do some of these with Gender Neutral readers, which I am not very good at but gonna get some practice in! GN Reader will stand for Gender Neutral reader.
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So, I heard you like skeletons...
Reader insert prompt fills for @skeletonh0e's sans-centric Kinktober challenge on tumblr
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You had been playing an immersive VR game: The World Of Aspenheim. However, after 10 years, the servers were about to close and to give your last farewells, you decided to stay online until the servers kicked you out. In the end, you fell asleep on the golden throne...
Only to wake up still logged into the game!? And why couldn't you log out!? And who was the one knocking on the door!?
"YOUR HIGHNESS? ARE YOU AWAKE?"
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~Someone Loved Me~ Fell sans x reader by T4K31T2MYGR4V3
Fandoms: Undertale (Video Game), Underfell - Fandom
04 Oct 2025
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Typical Fell sans x reader fanfic, Through unfortunate circumstances some asshole skeleton enters your life and of course chaos and love follows, glamorous gala's, mafia business, bar fights and whatever else. (A better summary is in the notes) This is my first UnderFell fanfic i actually have the courage to upload, i am still learning how to properly edit and upload my stories on ao3 so criticism is very welcomed!
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Idk if I'll do more of this but thing unrelented love and it HURTS.
Time to hit and pull on your heart deariessss...
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Here we are again! Another series of Undertale one-shots following the Fictober prompts and featuring the skeleton brothers as love interests to either my nameless or named girlies.
Just like the past two years, if you'd like any of these to be turned into fics, then please let me know in the comments! If enough people show they're interested, then it'll be added to my list of future fanfics! Five requests are what's needed for them to be added.
And if you choose to wait till the end of the month to read, that's okay! Requests can be made up until November 7th, when I post the list of the lucky winners!
Hope you all enjoy!
Series
- Part 3 of Fictober
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I'll Buy Ya Dinner Later (Kinktober 2025) by merrinbrite for Sinsational_Sinnabon
Fandoms: Undertale (Video Game)
04 Oct 2025
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Prompt: Strangers
Bara Sans Underfell x Reader
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After forty years living in the same small town, it's time for you to move on to a new place. You pack all your essentials and head for a new place to live: Ebbott. There you find the one thing you've been denying yourself ever since you lost your family centuries ago. Can you let these skeletons in and know your deepest secret?
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Sans is the Bane Of Your Existence. Pranks and Puns haunt your days whenever he is near. Unfortunately, Papyrus is your best friend, and you'd do anything for him. Even if that means taking care of his brother after an experiment gone wrong turns him into a massive, and even lazier, house cat.
Series
- Part 1 of Turned Into An Animal (Sentence Prompts)
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Dust scared you. He scared you more than all the rest of his team put together. That being said, you were going to help him through this little mishap even if it killed you.
Series
- Part 2 of Turned Into An Animal (Sentence Prompts)
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Life isn’t fair, case in point, you didn’t expect to be trudging through the snow to the corner store to pick up some much needed, over priced, feminine hygiene products while trying not to bleed all over yourself all because you failed to remember to pick them up with your normal shopping. That’s the thing, no one ever said life was meant to be fair did they?
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Promises were just words, promises of home, safety, love. Only ever worth something if the person kept those words close to their soul. That was something he learned pretty damn quick. Built for love, to be a friend, a companion, tossed into the rings to be a fighter, something he was never meant to be. The only promise he knew he could trust were the few he made to himself, the promise to never fall for the sweet lies of a pretty face again.
~*~
What happens when two souls who honestly need each other, don’t know how to open up and trust? Can love, trust, and home be found when the world has proven that trust is a dangerous thing? Can they get over the hurt that this unfair world has piled on them? Open up to each other and maybe, just maybe find the home they both need? -
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IT'S THAT TIME OF THE YEAR!
Kinktober time~!So yeh this is basically short drabbles of smut. Some will be longer, some will be shorter but I'm gonna try my best to make them juicy~
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Despite what he told the rest of the multiverse, what he had tried to tell himself, Error wasn’t nearly as against Soulmates as he pretended to be. You were perfect, his Star, only his. And he was finally ready to meet you.
Series
- Part 1 of Soulmate Au