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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
14 Oct 2025
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New kinktober! One chapter a day for the entire month!!! With a list I made myself, very excited to show everything I've written.
Just like the other ones every chapter contains some form of hypnosis/mind control/brainwashing. I'll do my best to tag but i can't tag absolutely everything so look at the warnings at each chapter or in the table of contents.Series
- Part 14 of Undertail hypnosis series
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A collection of small moments from a human having a hard time navigating the world. A chance meeting with Papyrus and Sans makes the journey a little easier.
- Language:
- English
- Words:
- 1,854
- Chapters:
- 2/?
- Hits:
- 10
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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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Kinktober 2025 by littlexsiren
Fandoms: Undertale (Video Game), Mass Effect Trilogy, The Avengers (Marvel Movies), Star Wars - All Media Types, InuYasha - A Feudal Fairy Tale, Five Nights at Freddy's, Naruto (Anime & Manga), Call of Duty (Video Games)
14 Oct 2025
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Tis the season!
Welcome to my first ever Kinktober Collection! I figured this would be a good challenge to get me back into the swing of things so I can finally update my other fics. This one shot collection will contain my favorite fandoms and mostly be reader-insert and Original Female Characters (a mix of 2nd and 3rd person POV). I make no promises that I'll have 31 one-shots for y'all to read, but damn I'll do my best to give ya somethin'.
Remember, this is an ARCHIVE that gives you the option to filter out tags you DO NOT like to read. If you don't like it, don't read it.
1. König/Original Female Character
2. Stretch (Underswap Papyrus)/Reader
3. Sans/Reader/Red (Underfell Sans)
4. Black (FellSwap Purple Sans)/Reader
5. Rock Lee/Original Female Character
6. Original Male Turian Character/Reader
7. Sans/Reader pt 1
8. Sans/Reader ft Red (Underfell Sans) pt 2
9. Red (Underfell Sans)/Reader
10. TBD**I'll be updating relationship tags as I upload chapters & tags are subject to change**
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the big kinktober 2025 special by ohitsthatguy for YeeSans
Fandoms: Undertale (Video Game)
14 Oct 2025
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so uh
i am writing and dedicating all these works to a very very special friend of mine, pookie when you read this, hi ily <3be aware i have no shame so a few of the chapters are on the really weird side of things, so please read over individual tags and warnings provided
happy gooning and spooky month for you all <3
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His Light, Her Darkness by Greenstreak
Fandoms: Harry Potter - J. K. Rowling, Undertale (Video Game)
14 Oct 2025
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Harry was always a little dark, but someone had always helped keep him on an even keel.
Frisk never wanted to leave her darker half, but something compelled her to jump down that hole at Mt. Ebott.
Sans just wanted the kid to be okay at the end of this.
Series
- Part 1 of The Light to his Darkness
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“The sky, a bright blue above, with the sun shining down like a gigantic spotlight. Spring was neither hot nor cold. It felt more like the perfect combination of both, straight down the middle, a warm sensation against bones. The perfect weather to play around in for kids.”
A once beautiful thing turns into horror for four children, resulting in their course of life changing permanently.
Blame sticks to two and ends with one, while two others walk away free.
Series
- Part 6 of Regular High School Life (Undertale au)
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Kamari333's Kinktober shorts, following the prompts set along HERE.
Another year of Kamari333 doing their best to celebrate Kinkplay and the fun of erotica <3
Individual tags in the chapter summaries and notes.
Functional Table of Contents (with tags and warnings) included!
Series
- Part 9 of Kamari333 Kinktober Archive
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Years after monster and human society merge, a young monster returns to the Underground with the intention of finding a story to tell. She finds that story in a stack of well loved letters between one Cathode and Mailman.
NOTICE: The final arc of this story contains implied suicidal ideation and serious self-destructive behaviors. If you are not in a position to read this sort of thing, you can stop reading after Chapter 22 and skip from there straight to the epilogue!
Series
- Part 1 of Dear Mailman: Yours, Cathode
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Dualtale AU: Two sides of truth by ED_Soul
Fandoms: Undertale (Video Game), Underverse (webcomic)
14 Oct 2025
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Description:
This story is based on the distant and little-known Dualtale AU,where nothing is as simple as it seems. In this world, unlike the original Undertale, monsters were never trapped underground. But what was the price for peace between humans and monsters? And how is it connected to XGaster, when these events unfolded long before the X-Event?
(Features characters from Underverse and Undertale,adapted for this story.)Author's Note:
In the Dualtale AU,the famous rule "Kill or Be Killed" is replaced by another:
"Speak out, and you will be silenced."
This is a universe built on lies and dark secrets that everyone holds.Every character has their own agenda and their own rules and it's better not to try and learn them.Series
- Part 1 of Dualtale AU: Two sides of truth
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Without warning, without reason, nor explanation, you (yes, you), woke up as Dream from Dreamtale. And of course, you remember everything that is supposed to happen in this world. With a knowledge that no one else possesses, you must do your best to take care of your new brother, Nightmare, while changing the fate of not only this world, but the multiverse itself.
Do you miss home? Maybe. But there's nothing you can do about it now. Instead, you must throw yourself face first into saving this world.
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I was 13 years old when I first wrote the original DaLDoM fic and it SHOWS. Now that I've been cursed into hyperfixating on Undertale AU's again, one of the main things I've wanted to do for so long is rewrite this fic, and the time has finally come! Don't expect any of the OC's that showed up in the original fic, the main focus will mainly be on Dream and Nightmare.
Series
- Part 2 of A Little Light
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Sans learns the price of inaction.
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The Underground is no place for children.
Toriel rules with cruelty and caprice, Asgore kills in the name of mercy, and Sans and Papyrus enforce the Queen’s will with bloodied hands. Every human who has fallen before has been slaughtered.
But when a silent, nonverbal child falls into this world, something shifts. Spared by Toriel on a whim, caught between Sans’s suffocating loyalty and Papyrus’s cold protection, they must learn to survive without words in a kingdom built on violence.
This is not a story of heroes or redemption. It is a story of survival, miscommunication, and the fragile bonds that grow in the darkest places. -
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En este libro veremos incorrect quotes de este bonita pareja y un poco más con los otros personajes.
Esté libro sera un au propio sin necesidad de ser muy extenso.(Lo aclarare en el primer capítulo)
Todos los personajes son de Toby Fox.
Versión original en Wattpad.- Language:
- Español
- Words:
- 854
- Chapters:
- 4/4
- Hits:
- 7
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I’m safe here (I’ll wait for a brighter day) by Ultimate_Sugar
Fandoms: Undertale (Video Game)
14 Oct 2025
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Gaster introduces his littlest son to a brand new game they can play, just the two of them.
This can only go well, of course.
(formally named 'soap')
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Every year on the anniversary of the Truce between the Bad and the Star Sanses Nightmare hosts a party at the castle for all to attend. We meet the players in the party.... At the end an unexpected guest to the multiverse makes their apperance....
The tags will constantly be updated as the story goes
Series
- Part 2 of Into the Multiverse
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The first? The original or the last by Glfrax
Fandoms: 전지적 독자 시점 - 싱숑 | Omniscient Reader - Sing-Shong, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
14 Oct 2025
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The oldest dream was reading outside his multiverse as he observe he notice a world where he exist. Kim dokja was born with a dreaming quirk but coupn't prove it after the incident he got stuck in a coma as he open his eyes His voice trembeling coma out" is this the start of the circle?".
Or the oldest dream may be from the my hero academia world and seeing other world he encontered his 'original one'
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You died.
Plain and simple, one moment you were there, strapped to the table in that ever so dark laboratory. Then a loud cracking had occurred - the sound of your own soul giving up. It had been deafening, like ice breaking beneath your feet. That purple crystalline heart shattering like fragile glass, unable to persist any longer.
The testing had been too much for you, not even you could persevere through it. Not after months—years.
You…died?
Then why were you here? More importantly where? What had
Gasterdone? And why did reality seem to glitch in and out with every painful thrum from where yoursoulshould be? And who were these skeletons that felt oddly familiar to yoursoul.>> Persevere?
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After gaining freedom from the soul kris does their usual routine get up, go to school, talk to susie etc but they have had a gave a shot and asked berdly to play smash with them.
little do they know tho a new student has came and lets just say kris DOESN'T want that.
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We get some omegaverse HorrorDust today
You can see I went feral for it, omegaverse is my soft spot uwuSeries
- Part 14 of Kinktober 2025