1 - 20 of 8,706 Works in Sans/Sans (Undertale)
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After a truce was decided in the multiverse Error becomes increasingly frantic until he finally shattered the truce by destroying an au of OuterTale
Though nobody could imagine why.
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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
19 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 wish for connection that would never be, for all that he would receive from that loveless relationship was the act of twisted desires. Manipulated into committing heinous acts. Error was doomed from the moment he uttered “I love you” Oh how he began to loathe those words.
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Bloodied Bandaids🖌🔪 by roxxroar
Fandoms: Undertale (Video Game), sans ensemble - Fandom, Underverse - Fandom, Super Dangan Ronpa 2
19 Oct 2025
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Ink talks with Killer to let it know that they're deciding to live for himself, and that love can be shown in many different ways. The name of this series is dedicated to Killer's problematic dependency on others, making him see himself as a TOOL(not the band); and Ink, to have another chance to get over their multifaceted apathy, seeing himself as less of an artist, but more of a MUSE.
OR
im lowkey reflecting on my two personal kins because I relapsed in SH a few days ago and I am an autoromantic individual. throw those two together and WHABAM!
Series
- Part 4 of a tool and a muse. V2
- Language:
- English
- Words:
- 1,503
- Chapters:
- 1/1
- Hits:
- 4
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Cross develops a terminal Soul disease, but his father only cares about his own reputation as a stellar Medical Scientist and uses his son(s) as lab rat to find a cure.
Series
- Part 7 of Nightmare's Clan
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After the primordial goddesses perished a the hands of their traitorous siblings, the old world fell in the hands of the Titans, who hunted down captured the gods, sons and daughters of the primordial ones.
Only after many centuries of war can the gods finally be rid of them and create the world again, like their mothers envisioned it.
But how can the gods ever move on?In this new world, full of cruelty and heartbreak, its easy for mortals to be hurt, broken. Most of them are left behind.
And yet in all this heartbreak, there is still one of the gods that will protect them.Series
- Part 1 of Ichorverse
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I ran out of tag room, so it’s being split up! Hope you enjoy nonetheless!
Series
- Part 2 of Cactus’ Kinktober 2025
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The gang starts to work on their feelings for others, now that the multiverse isn't in danger any time soon. Leaves time for self reflection and the first two to work things out are Horror and Lust.
Series
- Part 1 of Our Little Loves, For Good or For Bad
- Language:
- English
- Words:
- 3,101
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 8
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Art from: TumblrИнк и Эррор – два извечных врага, ненавидящих друг друга, но за маской бесконечных битв и разрушений скрывалась тайна. Все началось с невинного предложения посмотреть вместе сериал за коробкой шоколада. Постепенно, день за днем, между ними вспыхнула симпатия, переросшая в нечто большее. Теперь они – любовники, скрывающие свои отношения, боясь осуждения и непонимания.
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Some sensory deprivation with Sci and Lust
Series
- Part 19 of Kinktober 2025
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Mob Boss Carmine and Lounge Singer Lux don't see a future for their romance, but debts and obligations bring them together despite it. The attraction that blazes between them threatens to burn away the secrets that they've built their lives around. A series of monster kidnappings, Magic Prohibition, and the human mafia raise the stakes of their game even higher.
Oh, and they may be soulmates.
Love is a risk they can’t afford.
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Disclaimers:
Several details in this fic are heavily inspired by 'Blue joins the bad sanses' comic, so go check that out
Canon innacuracies: Passive and Corrupted Nightmare are the same person, Ink is the creator and not the protector, Ink, Error, Nightmare, and Dream, are all gods, Blue, Killer, Horror, and Dust's specific au timelines were all destroyed, and i took liberties with how the void works. Also, no Cross sans will be mentioned, i don't know enough about underverse, and there will be some OC non-sans God/entity/things later on. The fic will be split into parts, each lasting nine chapters.
Schedule: Once a week, on Saturday, Sunday, or Monday, and i will post art or a reference sheet with every chapter. Trigger warnings will be specified in chapter notes. I've never written for undertale before, so please let me know what you guys think :3With that said, the actual plot: After an injured Error crashes into Nightmare and Co's home, a close bond starts to form between the two gods, both forced villains. In light of Ink's attempt to kill Error, Dream finally starts to lose it, and Blue gets dragged along.
Average chapter length is 500-2000
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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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As Killer falls deeper and deeper in love with Cross, the others begin to notice his decline.
Series
- Part 7 of The World Ended When It Happened To Me
- Language:
- English
- Words:
- 442
- Chapters:
- 1/1
- Kudos:
- 10
- Hits:
- 63
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A sweet little series set in a world where monsters had been captured from the beginning instead of shoved underground.
Eventually, as the years and generations pass, both humans and monsters slowly forget the monsters were ever free.
We follow the story of an aging little zoo hoping to expand and take in a few monster pups. And the stories of several monsters who find themselves being transferred to the place.
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Dust finds himself awake under the stars, staring into a sky that feels too peaceful for the life he leads. Cross joins him, uninvited, but not unwelcome.
[Flufftober - Day 18: Swoon]
Series
- Part 59 of Undertale Fics
- Part 69 of One-Shots / Two-Shots
- Part 7 of Prompt Fics
- Language:
- English
- Words:
- 575
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 22
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Hi- uhm- Story with Blue joins the Bad Guys and FGoD Error In one- Bad Dream, Ink gets a redemption arc.
Das it.
Also, UnderFell, UnderSwap and Undertale Skeleton Brothers are all brothers, so no Red/Classic.
Also, gray Echo Flowers inspo is from the story For The Forgotten Ones. I forgot who wrote it T^T.... But It's a good story, go check them out!
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the big kinktober 2025 special by ohitsthatguy for YeeSans
Fandoms: Undertale (Video Game)
18 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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Geno observes the timeline and hardcore yearns for Sans while only partly realizing that's what they're doing. This crush is not going well, folks.
- Language:
- English
- Words:
- 570
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 19
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There’s no substance or anything good about these fics, they’re unapologetically sucky.