1 - 20 of 1275 Works in Underfell Sans (Undertale)

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  1. Tags
    Summary

    Ah, an office. A paper supply office. You'd think working there would be boring, quiet, but it isn't exactly like that. With two branches who hate each other merging into one, and a power obsessed person placed in second command, things will definitely get interesting in the Eastern branch. Drama will ensue, romance will blossom, and much more will happen in this office.

    While the skeletons have to sell paper stacks.

    Language:
    English
    Words:
    65,889
    Chapters:
    37/37
    Comments:
    76
    Kudos:
    39
    Bookmarks:
    10
    Hits:
    522
  2. Tags
    Summary

    Long ago, humans and monsters lived together in peace and harmony.
    Well, before the war between the two.
    The humans possess with the desire of power, declared war upon the monsters.
    after many years of bloodshed and pain, the humans won the war.
    the monsters scared of what the humans may do, beg for mercy, they said they will do anything.
    the humans pleased with the word anything, decided to accept there pleading, but on one condition.
    The monsters will be slaves for the humans desires.

    Language:
    English
    Words:
    2,935
    Chapters:
    7/7
    Comments:
    4
    Kudos:
    14
    Bookmarks:
    3
    Hits:
    227
  3. Tags
    Summary

    You didn't know what eating those people could do to you. You didn't know how falling into the underground would change you. You can't bring yourself to regret it, either way.

     

    Or, I wanted to read a fic where; Sans and Reader were already in a relationship with none of that waffling back and forth nonsense, surface monsters exist and reader is one of them, Horrortale Sans and Papyrus healing, and Reader becoming a Wendigo via eating humans and exposure to magic. This sort of popped into existence.

    Language:
    English
    Words:
    11,891
    Chapters:
    7/?
    Comments:
    85
    Kudos:
    132
    Bookmarks:
    30
    Hits:
    1109
  4. Tags
    Summary

    This is a story of a Queen who has dealt with many hardships and will have to deal with much more to come. Love, Fluff, Action, Tragedy, and of course Romance! This is a story how you the reader meet 6 amazing skeleton monsters who will help you in all your adventures and help you find your best friend and long lost family and maybe something else you didn't know you were missing. (It sounds like a Mettaton TV show!)

    Language:
    English
    Words:
    11,677
    Chapters:
    5/?
    Comments:
    29
    Kudos:
    80
    Bookmarks:
    23
    Hits:
    470
  5. Tags
    Summary

    The Mansion on Loft Avenue, everyone and their mothers had heard of it.
    They say that a vengeful ghost lives there, haunting and killing anyone dares to disturb its home.
    Well, that's half true.
    The killing part was way off, not even close.
    You are Y/n, a spirit bound to the infamous mansion in a small town near Mount Ebott.
    Your goal? To find a way to escape this damned mansion that won't let you leave and to restore your memories.
    The problem? Some pesky skeletons plan to live in your home and they don't seem to be leaving any time soon.

    Language:
    English
    Words:
    18,265
    Chapters:
    7/?
    Comments:
    90
    Kudos:
    236
    Bookmarks:
    49
    Hits:
    1750
  6. Tags
    Summary

    Reed Lane had waited a long time to enter those gates for a chance to start fresh. It was both an opportunity and an escape with a dash of adventure to finally live among the Monsters at their 'New Home'.

    It would have been fine if she didn't make terrible decisions, one being that she opened her door to a plumber that wasn't a plumber, but still offered to clean her pipes.

    Did she mention he had a large hole in his head, or that the cleaning service was actually very dirty?

    No?

    She decided to offer the confused skeleton dinner.

    Language:
    English
    Words:
    21,436
    Chapters:
    6/?
    Comments:
    71
    Kudos:
    145
    Bookmarks:
    39
    Hits:
    1707
  7. Tags
    Summary

    A compilation of UT AU stories that I either write because I want to, or because someone on tumblr gave me a prompt

    Pretty cringy but eh on this site there's worse so I don't really care

    I'll only make important short stories into their own works.

    Has devolved into a hodgepodge of shitposts

    Language:
    English
    Words:
    15,345
    Chapters:
    18/?
    Comments:
    96
    Kudos:
    140
    Bookmarks:
    6
    Hits:
    1483
  8. Tags
    Summary

    When your next-door neighbors and best friends Sans and Papyrus has some family move in with them, your normal and somewhat hectic routine turns completely chaotic! What are you supposed to do when a gang of skeletons and a bunch of other monsters are trying to romantically pursue you? Especially when some of them happen to be your friends?

    Series
    Language:
    English
    Words:
    2,820
    Chapters:
    3/?
    Comments:
    23
    Kudos:
    78
    Bookmarks:
    23
    Hits:
    771
  9. Tags
    Summary

    All Stretch was trying to do was help the stray cat he found on his doorstep. Somehow, though, he ends up with a new pet and a roommate.

    Language:
    English
    Words:
    16,173
    Chapters:
    7/?
    Comments:
    74
    Kudos:
    101
    Bookmarks:
    17
    Hits:
    726
  10. 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:
    26,403
    Chapters:
    22/31
    Collections:
    1
    Comments:
    22
    Kudos:
    214
    Bookmarks:
    21
    Hits:
    7422
  11. Tags
    Summary

    After you had managed to break the barrier, the monsters of Underfell are free to explore the world of the surface and live amongst the humans once again. However, even as you and Sans walked hand in hand out Mt. Ebott, humankind was still not certain about how they felt when it came to soulless monsters returning to the world above. You did your best to teach all monsters to be loving and compassionate, and you only wished the humans would return the favor and grant the same.

    When a group of humans threaten to tear you and Sans apart-- getting him riled up and angry-- you begin to wonder if perhaps bringing them to the surface was something no one was prepared for. Would Sans die for you? Kill for you? Or could you still convince the world to remain pacifist and stay DETERMINED?

    Language:
    English
    Words:
    19,861
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    13
    Bookmarks:
    2
    Hits:
    121
  12. Tags
    Summary

    Sometimes, Sans’s bark is worse than his bite.

    Language:
    English
    Words:
    2,135
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    20
    Bookmarks:
    2
    Hits:
    129
  13. Tags
    Summary

    (Rewrite of original)
    You have been going through hard times lately. Your little brother disappeared, your mother's prosthetic leg is having problems, you lost your uncle, and your favored cousin is still is jail. Your life is filled with struggle and getting into a car crash with a monster was the last thing you needed. To make things worse he said something about being soulmates. Thank the gods for family who understand magic and all its problems. With a guardian angel watching over you what else could go wrong?

    Language:
    English
    Words:
    6,178
    Chapters:
    2/?
    Kudos:
    7
    Bookmarks:
    3
    Hits:
    56
  14. Tags
    Summary

    Erin Smith never expected that monster kind emerged from the Underground to the surface, it was odd and high tensioned but 6 years later, monster kind gained their rights. Erin then meets Cross Peñaloza during one of her morning runs, a monster, a skeleton monster who's oddly very familiar with her. He seems nice yet quite odd, but why does he have such sadness and...fondness in his eyes? Why does he have such emotion, it just made her curious and to be honest he was an interesting fella.

    Cross and her became friends and decided to go on a trip together for fun! They didn't expect to crash into an island filled with skeletons and apparently the place Cross hated the most. A island filled with skeletons who are ruled over the rule of "Alpha, Beta, and Omega." Oh how fucking fantastic...

    Language:
    English
    Words:
    1,283
    Chapters:
    2/?
    Comments:
    5
    Kudos:
    14
    Bookmarks:
    2
    Hits:
    152
  15. Tags
    Summary

    Sans doesn't know why he was attacked, he's so scared- He can't believe what's happened to him, and yet- Why is Red so kind? And what is this warmth in his soul...? He's never felt it before...He wants...to be close to Red. But he shouldn't want that, right? He should be disgusted with Red for what he's done to him!! And yet...Sans is only disgusted by himself...for he...doesn't want to let Red go...
    Red has a job, a job that he quite enjoys. He gives people their darkest desires. Some breaking and entering that ends in sexy time? Sure. Some heavy BDSM? He's down. Some rape play? He's cool with that. He was commissioned for a cute, small skeleton- And damn, was he excited. They were adorable, so small in his arms... But...their sobs were a bit too loud...Their shaking too real... They would say the safe word, right? They would stop this, right? Why aren't they stopping this? Just say the word!
    "Peppercorn", Red says, his voice hoarse as he looks into the sobbing monster's eye-lights.
    "...that's...a spice, right?" They responded between choked noises.

    Language:
    English
    Words:
    10,794
    Chapters:
    7/?
    Comments:
    81
    Kudos:
    137
    Bookmarks:
    25
    Hits:
    1260
  16. Tags
    Summary

    An "Aint this the Life" AU (lets all thank Nilchance again for their beautiful fic).

    Red and Edge find something in their livingroom. It immediately catches Edge's attention. As usual, anything Edge likes, Red needs to test drive.

    Language:
    English
    Words:
    9,652
    Chapters:
    4/4
    Comments:
    16
    Kudos:
    74
    Bookmarks:
    13
    Hits:
    374
  17. Tags
    Summary

    Frisk was a waitress in a small town. But, she had a dream to be an idol since she was a child that continued to grow when some of her favorite idols show up at the cafe. They inspired her to try all she could to make it to the top. Following her heart, Frisk traveled back to her hometown Ebott and finds herself thrown into madness. What makes matters worse, all of her favorite idols start to pop out of the woodworks making her wonder what her life as become.

    Series
    Language:
    English
    Words:
    2,653
    Chapters:
    5/?
    Comments:
    2
    Kudos:
    12
    Bookmarks:
    1
    Hits:
    213
  18. Tags
    Summary

    Red is getting married. Sans is upset because Red was his ex and still loves him but the lucky man isn't him but his brother, Papyrus. Sans knows he can't have him because he's married to Red's brother, Edge. So during the bachelor party, Sans and Red decide to get heated underneath their lover's noses. Even though sans thinks this is their last night together is it really?

    Language:
    English
    Words:
    2,874
    Chapters:
    1/1
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    96
  19. Tags
    Language:
    English
    Words:
    8,177
    Chapters:
    5/5
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    50
  20. Tags
    Summary

    ✧ ✧✧ ✧
    A collection of many different stories, from one shot to multiple chapters, challenges to prompts, fan character profiles to summaries of my own alternate universes. And more!

    ~✿~✿~✿~✿~✿~✿~✿~✿~✿੭
     
     
    ☆ Story #727: Requests 2019 - #10: doodis2014: Rumbling #1: Geno

     

     

    ♡ Summary:
    Undertale story request from my readers.

    Keep in mind that not all requests are the same in length and that some will bigger in the word count. I do hope you enjoy.

     
    ~~~
     
    ~✿~✿~✿~✿~✿~✿~✿~✿~✿੭
    SHORT CUT!
    ✧ ✧✧ ✧

    Language:
    English
    Words:
    737,012
    Chapters:
    729/?
    Comments:
    3343
    Kudos:
    720
    Bookmarks:
    40
    Hits:
    16493

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