Under level undertale(fell)
27 stories
Sick (Underdale Fanfic) by MikuMikuNegi
MikuMikuNegi
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Sans gets sick..
[]UNDERFELL LIFE CHOICES[] by ShaylaCJ
ShaylaCJ
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Idk i just randomly put stuff in the story meh just enjoy it and also its a slow update bye Red has a horrible life he wanted to die but if he dies what will his boss reacts to his death?
AGEST BOSS? ( Warnig Lemon) by swapfellsansforlife
swapfellsansforlife
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this story is about what red( uf sans) goes through every day with his boss ( uf papy) ther may be other aus idk i might.if you are triggered by abuse or pain then please dont read.sorry thes are what i do \_(0_0)_/ .
Underfell Skeleton Brothers by FriskDremurr
FriskDremurr
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Disclaimer! I do not own Undertale or the Underfell AU. All that I own is the plot of the story and headcanons for the personalities. Warnings! Contains Fontcest (one-sided love though) Abusive relationship Abuse Downright sexual assault at some points throughout the story Huminized Sans and Papyrus
secrecy (undertale)  by The_Skinny_Legend
The_Skinny_Legend
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everyone knows that sans is hiding something, that he knows more than he lets on. But what? What will happen after they fake a genocide?
Underfell - Fellcest Fanfiction by Hippolyta18_Kitty
Hippolyta18_Kitty
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It all started like any other day Sans sleeping in and being yelled at by his younger brother it always ended up with them both going to work, it was all normal until the end of their work shifts, Papyrus had gone to go get Sans who probably would've been asleep or waiting for Papyrus to get him, but upon further examination Sans wasn't at his station, wasn't there sleeping or waiting Sans just wasn't there this sent a chill down Papyrus' spine, Sans was usually at his station, so why wasn't he there? Suddenly there was a loud cry of pain, no not any old plain cry of pain, Papyrus recognized the owner of the voice that cried out it was Sans! I might have went a little over bord with the description but its meant to be a small taster/teaser, this is probably going to have more fluff than lemon anyways, enjoy!
underlust  by AmiComi
AmiComi
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Este cómic no me pertenece los derechos van hacia su auntor/ar shame cave y a la página onderteil por traducirla
You Come First... by Meow_101XD
Meow_101XD
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Something I'm going to be doing...but a bit different this time! Hope you enjoy!
Underfell - But You Could Never Understand by underfell_owo
underfell_owo
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Ever since Papyrus joined the Royal Guard, something changed. He started to brutally beat Sans, and he made him call him boss. Papyrus sees Sans as a lazy, pathetic slob who isn't good for anything. What happens when Papyrus finds out Sans had something happen to him? What happens if Papyrus finds a collar and a leash? ( PLEASE READ THE STORY INTRODUCTION & INFORMATION FOR MORE! )
No More (Undertale) by ANinnyMouse42
ANinnyMouse42
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For years, Papyrus knows, Sans has had nightmares. Horrible nightmares, nightmares that leave him crying in the dark, crippled in the mind, and barely able to function in life. And that's why Papyrus stays so happy, so bright, for Sans, to keep his brother going through the hard times. But when Papyrus starts having nightmares, he knows something is wrong. And even if it means Sans is finally stepping up to fend for himself, even if he's finally once again filling the role of the protective older brother, Papyrus knows that something dark is coming...