1 - 20 of 4,013 Works in Post-Undertale Pacifist Route
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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.)
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A collection of short stories following the prompts of Sans x You Week 2024, hosted by htsan on Tumblr! In this collection, you'll get to join Sans in making fun of airport signs, use a series of pranks to stop a group of evil protestors from getting their way, have his calming words help you drive your way through a thunderstorm, and plenty of other antics. Be sure to visit htsan's Tumblr blog to enjoy others' great content, too!
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It wasn't long after the barrier had been broken and monsters were free once more that they learned of magic's disappearance on the surface. It had gone not long after they had; there had not been a human mage in hundreds of years, and humans now didn't seem capable of acquiring magic from their new monster neighbors.
A shapeshifting human child showing up out of the blue would have been a reason for celebration if she wasn't badly injured and terribly afraid. She latches onto the first monster to show her kindness- a tall and talented skeleton named Papyrus- and now he and his family need to find out what the hell is going on.
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GENERATIONS: Memories Alight (Freedom AU Book 13) by MapleInk62
Fandoms: Five Nights at Freddy's, Undertale (Video Game)
23 Sep 2025
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Fazbear Entertainment had always been able to easily control Anthros in the past, taking great advantage of their lost memories for far too long. And now, after all this time, these memories have been brought back to light, restoring what had been for too long shrouded of each Anthro...
Yet, while the Anthros may have regained their memories, with it comes a realization that some may need process their pasts at a slow pace. As it goes, the good memories aren't the only ones which have been restored. Not all is simple clarity as each Anthro recalls their individual pasts, and puzzling line of family generations.
Series
- Part 23 of Freedom AU [FNAF/UT]
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Warm Bodies, Cold Ghost by karmic-redheart (stardust__reverie)
Fandoms: Undertale (Video Game)
23 Sep 2025
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Toriel and Frisk grow ever-more intimate, and when the time comes, she shows them how to have sex. Chara feels left out (and gets off on it), but it turns out they don't need to.
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Undertale Purple - Perseverance by AnonymousWriter08
Fandoms: OMORI (Video Game), Undertale (Video Game)
22 Sep 2025
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A long time ago... humans and monsters lived in harmony. Until war broke between the two races.
The humans were victorious and sealed monsterkind deep underground with a powerful spell, that could only be broken with the power of seven human souls.
This was the tale of Mt. Ebott, and the tale trascended into legend. Those who climbed the mountain, weren't seen again.
And so, begins the tale of the fifth human soul to fall into the land of legend, to fall... into the Underground.
This is the tale of the Purple Soul... Sunny Suzuki.
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Waking up buried in snow, alone, and with no memories but basic common sense?
Check.
Seeing numbers, words, and broken text floating around every object and surface?
Also check.
Who is he.
He doesn’t know what happened.
And most importantly...
He doesn’t know why everything feels like he shouldn't be alive.Note from the Me:
This is my take on Fatal Error—a much more none canon, wandering version of him. He’s not fully canon-compliant in terms of power and has a different origin and personality. It’s a reimagining: glitchy, lonely, and filled with questions, bad puns, power and some more puns. -
Surely, nothing can go wrong with reviving eight dead children by Kittany_the_Fox
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
22 Sep 2025
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Out of sheer determination, Frisk decides that Asriel will not turn back into a souless flower. They also decide to revive the seven other fallen children, including their own personal narrator. Determination is a wonderous power, isn't it ?
Surely, nothing could go wrong with this.
But of course, as simple as life through the eyes of a child (who had at one point unfathomable power in their hands) is, it isn't to the numerous grown ups around. Much to every human child's dismay, they are taken in by the human government soon after monsterkind is freed. It is said to be temporary, the time for them to undergo medical exams and to find their remaining relatives yet.
None of the fallen children appreciate the ordeal, as expected. One more than the rest.
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It's six years after the Emergence, and while most of the monsters decided to stay close to the mountain on the west coast, slowly but surely a good few made it over to the opposite coast and settled down in Washington DC. Besides the King and Queen and their human child - relocated to the political center of the US for obvious reasons, you mostly see dogs, bunnies, and cat monsters integrating themselves among your coworkers and neighbors. Things aren't perfect, but they're improving day by day.
You have a stable job as a PR and Marketing Expert, a handful of close friends, and a stable and predictable routine.
When you randomly meet a brand new type of monster in town while late night shopping, you can't help but be frightened of him. After all- he's literally a living skeleton! Embarrassing, but at least you'll never have to see him again... right?
What happens when fate has other plans, and you just. keep. running into each other?
Let's find out.
Series
- Part 5 of The Butterfly Effect 💚💛🧡💜💙🩵❤️
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Supernova by EmbretheWorld
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
22 Sep 2025
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Supernova - when a star runs out of fuel, its core collapses, resulting in an explosive demise.
The death of North Star and the rebirth of Starlo.
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Post-genocide and post-true pacifist, Frisk lives with Toriel. Everything is fine. There are no dead children on Mt. Ebott. There no dead children, period. Chara? They don't even go here.
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Refraction (Do My Eyes Deceive Me?) by HyperfixiationMoment
Fandoms: Undertale (Video Game)
22 Sep 2025
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In which Dr. W.D. Gaster messes around and finds out. He's trying to do good things! He wants to help people! However, an obstacle puts the final nail in his career's coffin. The stars aren't supposed to feel cold.
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Papyrus attends college and you are his Human Tutor by Spectascopes
Fandoms: Undertale (Video Game)
22 Sep 2025
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Papyrus, now a surface-dweller, decides he's going to go to college to meet human college students and become wildly popular. Being the first monster student at a human post-secondary school inevitably comes with a unique set of social challenges, but Papyrus is nothing if not capable! With the help of a new human tutor and his family cheering him on, he will acquire every degree possible and then some.
You are a part-time student who gets asked to help out the new skeleton monster you've heard screaming in the halls, and you couldn't say 'yes' fast enough.
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Howdy, Hometown! by MoruMoru
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
21 Sep 2025
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A year or so has past since Monsterkind has been freed.
A little place called Hometown sits at the base of mt Ebott, a town consisting of monsters who go about their normal, daily routine. This normality is swiftly upended, as a young human teen - one who the monsters have never seen before - suddenly appears in Hometown.
Spurred at this exciting, new prospect, the bluebird monster Martlet - local carpenter and craftsmonster - excitedly takes the new human across a tour of Hometown, determined to show all the wonderous things the town has to offer.
But one can't help but wonder... is there more to this new human's visit?
Series
- Part 2 of MoruMoru's UTY collection
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Making A Monster by absurdmagewrites
Fandoms: Undertale (Video Game), Underfell-fandom, Underswap-Fandom, Swapfell-Fandom, Fellswap-Fandom, Fellswap Gold-Fandom, Horrortale-fandom, Crafttale-Fandom, Seaswap-Fandom
21 Sep 2025
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Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.
A skeleton monster to be precise.
With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.
What a surprise for you when you find out that someone does. A lot of someones.
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Toby always thought he was the weird one in the Dreemur family.
Until he found a gift that reminded him that it was okay to be weird.
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As Monsters begin to live on the surface once again, you meet an eccentric group of monsters while volunteering. From sickness, health, and beach trips gone awry, you get to know the pretentious Dr. W.D. Gaster and co. Maybe he isn't as much of a prick as he lets on.
- Language:
- English
- Words:
- 1,997
- Chapters:
- 1/?
- Kudos:
- 5
- Hits:
- 50
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Summary
Toriel teaches Papyrus and Undyne to cook properly, to varying results.
Toby mentioned his awesome fanfic idea on the Undertale 10th Anniversary stream, so I decided to cook something quickly. Enjoy!
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Top of the class, bottom of the heart by reincarnatedfrog
Fandoms: Undertale (Video Game)
20 Sep 2025
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Monsters have lived alongside humans for a decade now, and you’ve dedicated your studies to understanding them. But on the first day of your third semester, a scoreboard in the university’s new building throws you off balance—because the top name belongs to someone you’d have sworn wasn’t even trying to stand at the top.
Get to know a strange human with an even stranger family and friends, and experience chaos across both the surface and the underground in this little writeup of mine!
Story mostly exists cuz I am a Chara simp and there's not enough slow burn out there that gets heated later on ngl. -
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Summary
That golden sunset is always temporary.
Frisk doesn’t know why, but every time they get their “happy ever after,” the timeline...
It just… stops.
No light.
No sound.
No sensation.
Just oblivion.It all turns
D A R K
D A R K E R
Y E T D A R K E R
And they reset.
Over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and over and
What's even the point?
They tried everything.
It's hopeless.
They should just give up.
*But it refused.