1 - 20 of 1185 Works in Underfell Sans (Undertale)

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  1. Tags
    Summary

    A bunch of shorts in the 'My Demons' series.

    Series
    Language:
    English
    Words:
    1,312
    Chapters:
    2/?
    Comments:
    6
    Kudos:
    63
    Bookmarks:
    5
    Hits:
    366
  2. Tags
    Summary

    The kink and pairing will be put in the notes of every chapter as well as in the chapter title.

    Series
    Language:
    English
    Words:
    10,991
    Chapters:
    11/31
    Collections:
    1
    Comments:
    6
    Kudos:
    90
    Bookmarks:
    9
    Hits:
    1741
  3. Tags
    Summary

    Three years in a row! Here is Fate's new Kinktober!

    Each chapter will have its pairing and kinks posted and a warning if necessary. Chapters are of varying lengths and I branched out this year with different pairings (all the skeletons no Grillby or Toriel this year sorry) and used some other AU charatcers including a bit more papcest this year!

    Enjoy~

    Language:
    English
    Words:
    17,699
    Chapters:
    16/32
    Comments:
    157
    Kudos:
    204
    Bookmarks:
    20
    Hits:
    4301
  4. Tags
    Summary

    Red wanted a better life for his six-year-old brother, so he saved his money, scored a new job and hauled the temperamental brat halfway across the city to a new apartment, far away from the cesspit they once called home. Falling in love with his punny next door neighbor wasn’t part of the plan.

    Kustard | 100 Word Drabbles | Romance

    (For best experience, read in Entire Work mode instead of Chapter-by-Chapter)

    Series
    Language:
    English
    Words:
    16,900
    Chapters:
    169/?
    Comments:
    1846
    Kudos:
    943
    Bookmarks:
    51
    Hits:
    15597
  5. Tags
    Summary

    Daily oneshots to coincide with this year's Inktober prompts.

    Day 16 Summary: When he thought the humans couldn’t take anything more from him...Lamia!Fellswap

     

     

    Oneshot Collection | Mixed Genera | Multiship

    Language:
    English
    Words:
    10,837
    Chapters:
    17/?
    Comments:
    87
    Kudos:
    64
    Bookmarks:
    3
    Hits:
    872
  6. Tags
    Summary

    Red's been sinking his whole life, but lately it's become even harder to stay afloat.
    He's never been someone to ask for help, But when help comes will he accept it?

    A Fic about the nature of abuse.
    Please take care of yourself and proceed with caution.
    Underfell Paps is not a good guy
    and this was not written by a mentally healthy individual.

    Language:
    English
    Words:
    20,603
    Chapters:
    17/?
    Comments:
    39
    Kudos:
    141
    Bookmarks:
    5
    Hits:
    1561
  7. Tags
    Summary

    After Frisk kept screwing with the timelines, one last genocide run, the constant resets made the timeline go too far back by months, before Frisk was even supposed to fall, a awkward 24 year old girl ended up there as a glitch.

    Language:
    English
    Words:
    65,444
    Chapters:
    48/?
    Kudos:
    20
    Bookmarks:
    2
    Hits:
    483
  8. Tags
    Summary

    On his way home from work Sans has a motorbike accident. On the brink of Dusting his life is saved by a cranky lady. Who it just so happens is the one he crashed into.
    Papyrus arrives and all hell brakes loose.
    The skeleton brothers lifes have changed forever.
    But is is for the better or the worse?
    Only time will tell.

    Language:
    English
    Words:
    950
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    16
    Bookmarks:
    3
    Hits:
    154
  9. Tags
    Summary

    Just what it says on the tin, a collection of unconnected smutty ficlets of various lengths and pairings.

    Language:
    English
    Words:
    2,486
    Chapters:
    2/?
    Comments:
    36
    Kudos:
    131
    Bookmarks:
    15
    Hits:
    731
  10. Tags
    Summary

    Following the prompt list by SheeWolf85 on Tumblr, all themed to Halloween/Fall. Chapter titles are the prompts, let's see how many I manage!
    Also, in case anybody cares, I'm on Tumblr as unsupervised-english-major

    Language:
    English
    Words:
    7,300
    Chapters:
    15/31
    Comments:
    50
    Kudos:
    19
    Hits:
    218
  11. Tags
    Summary

    A collection of Undertale, Underfell, Underswap, and Swapfell imagines / drabbles, in which you, a sarcastic jackass and resisdent bad influence are inexplicably irrististable to literally every skelebabe there is.

    Expect fluff, really, really heavy angst, uncomfortably unhealthy relationships, and maybe even some sticky sweet, unapologetic fan service.

     

    Taking requests! Latest update: "Please don't take my sunshine away"

    Language:
    English
    Words:
    6,560
    Chapters:
    6/?
    Comments:
    54
    Kudos:
    127
    Bookmarks:
    21
    Hits:
    1814
  12. Tags
    Summary

    You've fallen into the underground by mistake and have figured there is no way back up. You struggle to get through the ruins and once you get out, you met Red(sans). He seems a bit like an ass, but you figure out that he's not as bad as he seems.

    Language:
    English
    Words:
    240
    Chapters:
    1/?
    Kudos:
    2
    Bookmarks:
    1
    Hits:
    3
  13. Tags
    Summary

    Edge (Underfell Papyrus) is a serial killer due to his unfortunate upbringing. All his life, he never had experienced love.

    That all changed when he saw a skeleton detective that had a thing for honey.

    Language:
    English
    Words:
    754
    Chapters:
    1/1
    Kudos:
    2
    Hits:
    32
  14. Tags
    Summary

    WOOT KINKTOBER!
    Let the smut rain >:D

    Language:
    English
    Words:
    35,741
    Chapters:
    10/31
    Comments:
    133
    Kudos:
    150
    Bookmarks:
    19
    Hits:
    3493
  15. Tags
    Summary

    You're a terrible person.
    Which was pretty self-explanatory in it of itself, but nonetheless.
    Your descent into human tragedy had been anything but an overnight change, but, you know. Things happened, and the culmination of all your questionable life choices had led you to become the person you were now; a sarcastic, twenty-something-year-old nihilist with bleak prospects boarding on the line of alcoholism.

    So when you wake up after a night at a bar in a jacket that doesn't belong to you and a throbbing, all-consuming hangover, you're not exactly surprised. But when a certain red-eyed skeleton with a wolfish grin and anger management issues decides to insert himself into your trainwreck of a life, well. You aren't having it.

    Unfortunately, he's not taking no for an answer.

    Language:
    English
    Words:
    25,456
    Chapters:
    6/?
    Comments:
    99
    Kudos:
    131
    Bookmarks:
    32
    Hits:
    1335
  16. Tags
    Summary

    Red takes a ride. Sans takes his chances. Edge takes notice.

    Series
    Language:
    English
    Words:
    12,719
    Chapters:
    3/3
    Comments:
    118
    Kudos:
    245
    Bookmarks:
    10
    Hits:
    2657
  17. Tags
    Summary

    Everything is not what it seems

    Everyone is not what they seem.

    Red didn't believe that. He believed that everyone can be predicted...

    But, not you... Why, though? What makes you so special?....

    "Wanna find out? "
    -------------------

    Lets go on our journey with Red(our goofy, hot, awkward, sweaty and quite possesive skeleton) and reader(our cute, smart, awkward, shy and blush-filled human) to find out what hides beneath their souls!

    Updates atleast 1-3 times a month.(may change)

    Language:
    English
    Words:
    7,123
    Chapters:
    5/?
    Comments:
    16
    Kudos:
    51
    Bookmarks:
    16
    Hits:
    758
  18. Tags
    Summary

    Alternate universe: UnderFell

    A kill or be killed world. Love is the ultimate weakness. Everybody has LV and only the strongest can survive. Nobody cares about each other. Same with the skeleton brothers. No love, no caring. Only hate.

    ...right..?

    Language:
    English
    Words:
    849
    Chapters:
    2/?
    Comments:
    6
    Kudos:
    5
    Hits:
    37
  19. Tags
    Summary

    Sans had only meant to retrieve a few things from the old house that had been forgotten during the move to the Surface. Getting ambitious with his ability to bend spacetime lands him in an unfamiliar Underground that seems to take his stubborn optimism as a personal insult.
    -----
    Sans had been minding his own business when an unknown skeleton suddenly fell into his life. He might have been able to take that in stride -- if the shrimp hadn't let his association with Gaster slip.
    -----
    Papyrus takes a monster in need into his home and hopes the decision will not be one he later regrets. His house guest appears to be a bit funny in the head but ultimately harmless, and Papyrus will admit his curiosity has been stirred with the abrupt discovery of a third skeleton.
    -----
    TL;DR It's a Swap!Sans in Underfell story.

    Series
    Language:
    English
    Words:
    11,178
    Chapters:
    7/?
    Comments:
    1
    Kudos:
    38
    Hits:
    396
  20. Tags
    Summary

    Monsters are above ground now, they have taken human like forms with magic to try and ease the transition but go into their true form at will. Humans are still cruel and against them trying to join their society. Reader is human, Papy hates humans. Reader meets Papyrus at bar that Sans brings him to. Reader sees him at the other end of the bar ugh he so hot yes bone daddy. Sans sees her staring and hehehehe imma try to set them up even though she’s human.
    Their first convo ends with Papyrus being a pee pee poo poo as usual like y r u not scared of me? Really he just needs love. She agrees to help his group work with humans as a spy for information. Will this be a good decision or will her affection for Papyrus end very poorly?

    Language:
    English
    Words:
    6,122
    Chapters:
    3/?
    Comments:
    4
    Kudos:
    12
    Bookmarks:
    3
    Hits:
    112

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