1 - 20 of 276 Works in Alternate Universe - Undertail (Undertale)
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Velva never had any contact with any other skeletons until she met Sans and Papyrus, who seem a bit more knowledgeable about their species. In an effort to learn more about themselves, Velva decided to experiment with sans.
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This is a story where you, yes, YOU, the reader, get to decide what these two characters do.
Just by commenting your favorite kink, position, or prompt on this Fic, excluding anything that falls under Age play or something that may be
considered a felony!This collection will feature mini-comics ranging from 1 to 10 pages (depending on my motivation) once a month.
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Undertale/Undertail:Love and Loss by FazclairesMusicMaamSimp888
Fandoms: Undertale (Video Game), Undertail - Fandom
02 Aug 2025
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A new Undertale au, a new human has fallen. Number 9. But, how could this happen? What will change? Better find out. And expect many sexy scenarios along the way.
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Tastes like Honey - Underswap Papyrus x Reader by Jellyyy_05
Fandoms: Undertale (Video Game), Underswap AU - Fandom
26 May 2025
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You're the type of girl that things never seem to work out for. That is until you run into mysterious skeleton with rugged good looks and surprising charm. Maybe things are starting to look up for you. This is a reader-insert. Reader is female. This Fanfiction contains skippable smut. This is my first Fanfiction so any feedback is appreciated. Happy Reading! ~ J
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A series of SFW + NSFW drabbles/oneshots relating to the Bad Sans Gang being gay and in love with each other.
THIS CONTAINS MATURE ADULT CONTENT
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Wake up, go to work, head home, go to sleep, rinse and repeat. That's how he did it, that's how it always worked out for him. Working paid the bills, and bills always kept his hands busy.
...But one day, that all changed, when death came for him, not by a skeleton in a robe, not by dying of old age, but by simply taking a bullet to the face, wrong place-wrong time.
Yet death didn't keep him down...
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Collect all works by Heartbreaker2022
Fandoms: Sanders Sides (Web Series), Undertale (Video Game)
22 Mar 2025
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This was a one shot book that I am moving over from Wattpad. As I no longer am on that platform very often I’m moving my work to AO3 so I can permanently move off of Wattpad.
- Language:
- English
- Words:
- 1,873
- Chapters:
- 5/5
- Hits:
- 34
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Killer's mouth being put to good use...for once. by asheiskindafunny
Fandoms: Undertale (Video Game)
10 Mar 2025
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Dust never thought he'd say this, but Killer is REALLY fucking good with his mouth....when he's not running it and annoying the shit out of him, that is.
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"Fuck, Sans... If you had killed this human the day you found her, we wouldn't be here..." Undyne whispered to him, filled with remorse and guilt.
She passed his hands behind his back, anti-magic handcuffs surrounding them. Checking their placing, she locked them.
Sans could not tell if she was hating him. Perhaps she was blaming herself, too. Perhaps everyone was feeling a little responsible. At least, he hoped so."Why did you do that?" she sighed, rhetorically.
"I did it out of love." Sans simply replied.
"That’s the stupidest excuse you could have chosen..."
•| ⊱❦⊰ |•
Corrupted by the Lust, monsters live a hell everyday, sex and immorality being a daily routine.
Sans is one of the most luxurious of them and then, the one who had always been the most disgusted by all of that. He lost hope. He lost will.One day, while going to this giant purple door, he found a package. A human baby. And strangely, Sans felt... at peace.
Now, Sans has something to protect from this world. And he is not going to give up, even when everyone seems to be against him. But it might be easier than he thought: it seems that this little girl can change hearts...
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Cross is not okay.
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Sans and reader are having gooooddddd tiiimmeee!
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- Part 1 of Doctor, Doctor!
- Language:
- English
- Words:
- 1,530
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 118
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- Part 3 of Vampire Gaster
- Language:
- English
- Words:
- 1,420
- Chapters:
- 1/1
- Hits:
- 59
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- Part 2 of Vampire Gaster
- Language:
- English
- Words:
- 1,309
- Chapters:
- 1/1
- Hits:
- 34
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Series
- Part 1 of Vampire Gaster
- Language:
- English
- Words:
- 1,283
- Chapters:
- 1/1
- Hits:
- 37
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cum drinking = pregnancy
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Cross is the new recruit. He doesn’t talk, he’s not social, he seems cold. Chia felt like he didn’t like her at all but interesting events happen
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Under Dreaming by Cerys_Delaney for thelovelyskelesisters
Fandoms: Undertale (Video Game)
14 Nov 2023
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Dr. Gaster is searching for souls through dreams, but he finds one whose sexuality brings out the kink in every creature of the underworld.
No one seems safe from this girl's perseverance to be able to take just about anything. And it's driving Gaster wild with curiosity... and desire.
*Warning: plot is adorned with a shameless amount of sex.
*Tags updated as new kinks, pairs, and experiments are explored.
*Chapter Titles updated with pairings for those who want to skip past the plot and read specific pairings. I aim to please. Leave me a comment if I succeed ;-) -
Indolent Inclinations by CloudyintheCloset for dustsanses
Fandoms: Undertale (Video Game)
07 Oct 2023
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Dust forces Cross to take a nap, Cross thanks him.
For @dustingrayves.
Dust/Cross with rough romantic fuck, praise, marking/biting, rimming, and anal.Check out my Twitter for more writing info!
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With his own universe dying, Rewind (Sans) lets his ShortCUT scissors guide him to somewhere new with the hope of finding salvation. His first step into the unknown multiverse leads him to a frighteningly familiar place and yet so very different. What is this darker charade of his home, and who does this so-called "edgy" Papyrus he meets there think he is?
Series
- Part 1 of RemoteControl