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Under Their Tails by TebTebmylittlepony
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
18 Oct 2025
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Summary
Brought to life again as a big dicked version of The First Human in one of his favorite games, James will make sure his perviness and loving warmth will allow him to get with these strangely lewded up characters, while also making sure not to make the same mistake the original did.
After all, why would he want to leave this Underground?
Notice: First chapter is more of a notice for people that are interested in this fic before I make an actual chapter, if you don't click on it or do and decide this isn't for you, then all I can say is I hope you have a nice day.
- Language:
- English
- Words:
- 272
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 28
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Summary
Centuries after the fall of humanity, the Kingdom of the Underground stands eternal ruled by the divine monarchs King Asgore and Queen Toriel, whose names are whispered with reverence and fear alike. Monsters thrive beneath their reign, their faith centered on the royal bloodline — the only family said to bear the blessing of light.
Then one dawn, everything changes.
Above the King’s empty throne, a human infant floats bathed in golden light, silent, weightless.
Humans have not walked the Underground in generations. Their magic, long vanished, lingers only in stories told by candlelight. Yet this child breathes.He is named Nilu, the Dawnstar, and the kingdom bows before him as proof that the gods have not abandoned them. Adopted by the royal family, raised beside Prince Asriel, and revered as divine, Nilu becomes the empire’s living symbol of purity and promise.
But miracles demand worship and worship demands control.
Far below the marble halls, a boy named Sans, son of the royal captain Gaster, begins to ask questions no one dares voice. He is ten, clever beyond his years, and he sees too much.
The story begins the day the kingdom finds its new heir a god in a child’s skin.
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The thing about soulmates is, no matter what pries them apart, they always...always find a way back together
Chapters 1-3: Prologue
Chapters 4+: Main Story
*Chapters set to auto release every Saturday!
*This is a rewrite of I Have The Power of Gaster AND Anime On My Side. Same concept, with a bit of a serious feel.*
**Please be aware that this is not like my usual reader-inserts!! This story is in 3rd person pov, very vague description of a female reader. Unnamed (Pet names only). No use of y/n, y/e/c etc.**
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I would sell my soul to Satan for you by Akirathecat
Fandoms: Deltarune (Video Game), Undertale (Video Game)
18 Oct 2025
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The war was over, monsters were sealed away in Mount Ebott, including Tenna, the love of Spamton's life.
Now with a new bitterness for humanity, and desperately wanting to see his love again, Spamton makes a deal with a demon.
The price? His human soul.
--------------------------------------Now, hundreds of years later... another human tries to do the same thing.
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Togore’s life as the second prince of the UNDERGROUND was PERFECT. Until… one day, i wasn’t.
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What is Left Behind by EmmaSmoke
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Video Game), Undertale Yellow - Master Sword (Video Game)
18 Oct 2025
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At the end of her first journey, Frisk is confronted by the lingering emotions of the Fallen, including their HATE. Corrupted, Frisk RESETs to slaughter monsterkind.
But at the end of this turn, Frisk regains her freedom. She does more than that, however. She returns life to what has long-since been gone.
Now, Frisk must lead monsters and humans toward a brighter future.
Clover must grapple with the years his spent dead and the weight of his sin.
And Kris watches as the world he’s always known changes drastically.——
Trust me, this story is going to be good. It’s not my fault the tags I need are nonexistent.But prepare for heavy world-building and lots of angst.
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"They’re sitting in a bed of golden flowers somewhere far beneath the earth, and, as far as they can tell, for better or for worse, they’re decidedly still alive."
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Frisk climbs a mountain and inadvertently awakens an ancient terror sleeping beneath the flowerbed they land on when they fall. If by "ancient terror" one assumes the less-popular definition of "annoying narrator-ghost princet of monsterkind who is now, unfortunately, permanently stuck in their head."
Chara doesn't want to be awake. They especially don't want to be helpless in the back of a bloodthirsty human's head, watching them ruin the only home they've ever known with no power other than their voice to fight back with. Luckily for them, that's not what's happening at all. Unluckily for them, they may have to re-evaluate a few things about their worldview. Which, for someone as set in their ways as them, is not an easy thing to do.
(Then there's the matter of the weird flower, Frisk's unusual powers, and the Longest of Long Days the underground has ever seen.)Chara & Frisk no player AU true pacifist. Updates Fridays!
Series
- Part 2 of FUSEVERSE
- Part 1 of aubades and nocturnes
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The Tales of Kháos: A Reapertale Re-Take by Palito266
Fandoms: Undertale (Video Game), UTMV
17 Oct 2025
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A sequel to the previous three stories: "Tales of Infinity," "Tales of Pragmatism and Fabulism," and "Zero Tales."
Follow the gods: a brand new species that had been given consciousness by a mysterious form and a body as well. Explore how these deities accustom not only to their existence but also to the world around them that they must protect.Reapertale was created and is owned by Renrink. Inktale was created and is owned by Comyet. Dreamtale was created and is owned by Jokublogs. Errortale and Fresh Sans were created and are owned by Crayon Queen.
(English is not my main language, so there may be some grammar issues.)
Series
- Part 4 of Markings of the Cosmos
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A very, very special festival by Lilycolonthree
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Undertale Red & Yellow
17 Oct 2025
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Summary
Frisk, Chara, and Clover hang out at the festival. A very special time indeed.
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The monster she fell in love with, had paid her to have sex with someone else. How cruel was that?
Frisk was a petty thief with nimble fingers and a charming smile. Before it all started, she had been on her own, and it was enough to survive. Stealing was easier when your charm had their guard down.
Then she met Sans, and suddenly she found the hope to live. Like a puppet on a string, he’d gotten her along to participate in his crew’s heist, despite being the only human on the team. He insisted on training her flirting skill and even resorted to kissing her whenever they had to teleport. He was enough to make her heart flutter dangerously, and she had to constantly remind herself that it was never going happen between them.
So why did he suddenly change his mind the morning before the heist? Why did he no longer want her to do the very thing he had recruited her to do?
Just as she found out, it all came crumbling down on her. -
Adventure Tale by Kaboom91
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Adventure Time (Cartoon 2010)
17 Oct 2025
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Summary
After countless runs, something goes wrong, and now humans and monsters alike have been pulled into a strange new land with its own rules and its own dangers. Come Along With Me for the crossover nobody asked for, its ADVENTURE TALE!"
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Two souls in the Underground, intertwined by fate and by a prophecy that keeps them apart.
Heads up before you read:
In this fic, Chara is alive and far from a good person. They’re not a mindless killer, but a narcissistic kid. This is not a fluffy Charisk story. Chara and Frisk’s relationship is deeply toxic.Please look at the tags before you continue.
I've been experimenting with third person for a while now, and I've grown to like it a lot more than first person. For those who came from my other fic, which I promised a sequel for, I’ll try my best, but I’m not sure how that will go now that I’ve fallen in love with third person and started a new long fic. Please don’t be angry I will try to finish my other fic as well.
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After the Visitor left behind that angelic abomination who wipe out 90% of humanity, Sam know's that they can't stay in the city. Searching in the former room of Sybil he found the former research of the astronomers and discover a place that was not affected by the visitor, Mt Ebott. He doesn't know why but it seems there is some kind of barrier that keep the place safe during the end of the world.
With only that as his last hope to survive, Sam and his friends go to Mt Ebott but the exalted four find them, taking them one by one until it was only Sam and the childrens.
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The Seven (Plus Chara) have done it; they've ended the imprisonment of all monsters. With Frisk as their ambassador (and Papyrus as mascot), things are sure looking up!
But in the background, things are at play, events that could threaten everyone's happy ending.
After all, just because one story ends it does not mean the Tale has.
Series
- Part 2 of Hall of the Seven
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Asriel and Chara. Papyrus and Sans. Only one pair is complete.
It was unfair. Papyrus had Sans, and Sans had Papyrus, and he had no one. The predetermined fate they faced was cruel, as if reminding him over and over what he had lost. A life.
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Life On the Surface by RetroWrites
Fandoms: Undertale (Video Game), Deltarune (Video Game)
17 Oct 2025
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Summary
Frisk has freed the monsters.
Now all they need to do is to live on the surface.
Campy story with plot and sad stuff on top of regular Undertale shenanigans.
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charisk oneshot dump! by dream_sky
Fandoms: Undertale (Video Game), Deltarune (Video Game)
17 Oct 2025
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Summary
sometimes when i'm meant to be asleep i write very short charisk oneshots. so. i'm dumping them here. will update at complete random. enjoy!
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Early Awakening by 3Pleatv
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
17 Oct 2025
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Summary
Well.
This was new.
Chara was not accustomed to being see-through. After all, being corporeal had been their natural state for most, if not all of their life.
Did that make this non-life or undeath?
They were doubly unaccustomed to seeing another human in the Underground.
Were they dressed as a cowboy????
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Basically: Undertale Yellow if NarraChara was still prevalent! What will change? What will stay the same? And WHY is this flower following them around so intently?! -
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Summary
Wake up buried in snow, alone, and with no memories?
Check.
Kepp seeingg numbers, words, and text floating around every object and surface as far as the eye can see?
Also check.
Why does every person he meets say he needs help?!
His perfectly fine if you ask him."I wonder what determination taste like"
Note from the author:
This is my take on Fatal Error—a much more none canon, this isbt even OOC this is just straight up diffrent person with the same name, amnisiec version of him.
He’s also not fully canon-compliant in terms of power scaling and has and maybe different origin and personality.
It’s my reimagining of him.
Glitchy, lonely, and filled with questions, bad puns, power to blow up annoying people and some more puns. -
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Summary
How many runs has it been?
Not even Chara could count them. Over and over again, they saw the Human kill those they had cherished when they were alive. They had wished to do something about it, and had even suggested to the Human to pick another route only to be in vain. However, when an intervention comes from the Man who Speaks in Hands, they are given an opportunity to give one being the memories of the previous routes.
Garden of LOVE(Level of ViolencE) is a three part series and take on the already popular concept of Dusttale. In the series, Sans's memories are given back to him by Chara who aims to stop the Human's genocide routes.
Series
- Part 1 of Garden of LOVE