1 - 20 of 2,644 Works in Underfell Sans (Undertale)

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  1. Tags
    Summary

    When monsters and humans went to war, the monsters were sealed underground by seven of the most powerful human magicians. Though they wanted to fight back, they lacked the power to do so. The underground has suffered in recent years after the Dreemurr family lost their children. Monsters are starving, violence is common outside of settlements, and the king seldom leaves his throne room. A new human child has fallen underground. They are the 8th human to fall, and the 7th soul to be added to the king's collection. But a certain flower hopes to change their fate...

    Language:
    English
    Words:
    4,367
    Chapters:
    1/?
    Hits:
    1
  2. Tags
    Summary

    “It's late, and it's raining,” you state, tugging his sleeve and halting his steps. The smell of smoke is strong, and it mixes with the earthy scent of the night. “Why are you trying to sneak away? You know you can stay for as long as you'd like.”

    He turns around, his figure darkened by the poor lighting of the patio, plus the lack of a moon.

    “solid suggestion, but you and i both know that's not a good idea anymore,” he replies, his voice sounding on the edge of exhaustion.

    Far used to his behaviour – one you've been a witness and victim of for the past few months – you roll your eyes and fetch a candle and a match from your pockets.

    “Oh, please. Don't be silly! You're always welcome here.”

    And as the flickering flame brings about clarity into the deep darkness of the garden, you quickly draw back a comment on him being dramatic.

    He's covered in dirt, and the injured body of a familiar face lays motionless on the floor.

    “just to let you know," he says, chuckling, ”i was only gonna drop this off." He gestures at a small, black box he retrieves from under his suit. "but that was your last chance to reject me, so now the fault's on you, if ya didn't want this.”

    Language:
    English
    Words:
    11,088
    Chapters:
    5/35
    Comments:
    2
    Kudos:
    27
    Bookmarks:
    5
    Hits:
    550
  3. Tags
    Summary

    Frisk has reached the end of the road in their resets and the strain of their timeline finally gives way right before they can fight with Sans.

    In a last minute feeling of regret, they try something unbelievable.

    They relinquish their soul, and the next thing Sans knows he's laying in a bed of flowers, feeling like he was ripped apart atom by atom and then put back together again.

    Also he has hair.

    And skin.

    And this new Underground he's ended up in isn't quite as friendly as he remembered. Great.

    Language:
    English
    Words:
    83,847
    Chapters:
    15/?
    Comments:
    362
    Kudos:
    650
    Bookmarks:
    105
    Hits:
    12,794
  4. Tags
    Summary

    You had A Plan for your life and it didn't involve getting trapped in your hometown by a new law that monsters and their soulmates must move in together for two years. Papyrus might be adorable, but you don't want anything to do with his antics. Luckily, his brother's soulmate, Frisk, has an escape plan.

    (Based on the Papyrus/self-insert prompts from Scrambledmeggys)

    Language:
    English
    Words:
    27,697
    Chapters:
    17/30
    Comments:
    77
    Kudos:
    80
    Bookmarks:
    11
    Hits:
    1,475
  5. Tags
    Summary

    The Puzzle Honey Bandits are at it again!

    Their reign of terror must end!

    We all know they are monsters who only burgle other monsters.

    What fiends they must be?

    Who would dare?

    They need to be brought down, by any means!

    Language:
    English
    Words:
    14,206
    Chapters:
    6/?
    Comments:
    30
    Kudos:
    10
    Bookmarks:
    3
    Hits:
    198
  6. Tags
    Summary

    Alice is a disabled woman living alone, her sister-in-law gets her a suprise for her birthday.

    Best. Birthday. Ever.

    So, this work is still being written and has some tension between the mc and her new little noodle. That being said, I havnt decided if I'm going to leave things at mutual pinging or let things bloom, mostly cause I can't help but writing romance and smut. I've got about 6 chapters done and updates will NOT be on a schedule.

    Feel free to give suggestions, comments, or even offer tags I should add.

    Language:
    English
    Words:
    64,379
    Chapters:
    16/?
    Collections:
    1
    Comments:
    170
    Kudos:
    235
    Bookmarks:
    69
    Hits:
    4,251
  7. Tags
    Summary

    Even though monsters were already part of human society, you didn't really know how to react when you found your dog attacking a random monster in the street.
    Mortified, you got yourself promising him you would do him a favour in exchange of ignoring what just happened.
    Things get worse when you realize he also works at the same building as you.

     

    Do you like angst? This is your fic. Don't worry, you'll laugh too.

    Language:
    English
    Words:
    131,115
    Chapters:
    44/?
    Comments:
    439
    Kudos:
    733
    Bookmarks:
    106
    Hits:
    18,170
  8. Tags
    Summary

    Papyrus is kidnapped by two humans (Underfell Sans and Papyrus) and they have a lot of work to do with the lucrative skeleton.

    Language:
    English
    Words:
    15,594
    Chapters:
    9/?
    Comments:
    8
    Kudos:
    30
    Bookmarks:
    3
    Hits:
    1,025
  9. Tags
    Summary

    You’re six months into your career as an electrician and for the first time in your life, you’ve got your shit together. Go you!

    When the job brings you to a mansion inhabited by skeleton monsters and your ex-girlfriend, things change. The wiring in the house is fried, the skeletons are suspiciously evasive about the basement, and your ex keeps inviting you for sleepovers.

    You just want to get through the repairs without setting the place on fire. Keeping your sanity intact would be a nice bonus.

     

    Or, another anti-harem fic, but in this one, the girlfriend is into you too.

    Series
    Language:
    English
    Words:
    74,170
    Chapters:
    12/?
    Comments:
    613
    Kudos:
    877
    Bookmarks:
    231
    Hits:
    16,501
  10. Tags
    Summary

    Reader is a cook in a small town diner and Sans is her friend of 10 years. Sans has a massive crush on reader but her son intentionally cock-blocks Sans. All the while reader is oblivious to it all.(Or is she? Is she really obvious?) One night after work reader checks on sans but... why is there six more Skeletons then usual?!?!

    (Chapter 8 and beyond is going to have a different writing style due to the break I had in writing it and my writing style evolving)

    Language:
    English
    Words:
    12,670
    Chapters:
    11/?
    Comments:
    34
    Kudos:
    145
    Bookmarks:
    25
    Hits:
    2,838
  11. Tags
    Summary

    a collection of my headcanons, imagined, and cut content from my book the dollhouse! will be updated frequently tbh

    Series
    Language:
    English
    Words:
    555
    Chapters:
    1/?
    Kudos:
    5
    Hits:
    53
  12. Tags
    Summary

    In a broken multiverse, pummeled with negativity, there’s a lost soul, trapped within the confines of an empty world, found by someone who’s good hearted yet still partakes in activities with a murderous group.

    The multiverse is unfolding and being destroyed, and a legend claims that one called the Protector with the ability to repair and save AU’s will one day come. But, is it too late?

    aka Cross finds ink sans in the anti-void. this is inspired by for the forgotten ones by im_sorry_buddy

    Language:
    English
    Words:
    1,732
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    11
    Bookmarks:
    3
    Hits:
    95
  13. Tags
    Summary

    My first work, a book of oneshots focused on hypnosis / mind control.
    Most stories will be non/dub-con so be careful.
    Almost any ships, focused on sanscest.
    Edit: The number of tags being limited, please read the summary of each chapter to know the warnings / kinks. I hope you enjoy reading this book as much as I love writing it.

    Series
    Language:
    English
    Words:
    228,917
    Chapters:
    67/?
    Comments:
    916
    Kudos:
    891
    Bookmarks:
    94
    Hits:
    83,187
  14. Tags
    Summary

    This is the wholesome story of meeting your neighbor and learning to appreciate him and his brother.
    Obviously things can be chaotic as you learn some secrets about the pair.
    Can you live with their secrets and your own without falling apart?
    Can you trust them enough to let them see through the cracks in your mask?
    You really hope you should.

    Language:
    English
    Words:
    203,333
    Chapters:
    46/?
    Comments:
    286
    Kudos:
    414
    Bookmarks:
    122
    Hits:
    15,425
  15. Tags
    Summary

    In Ebott City, circumstances lead a few monsters who are so alike, but so different, to find each other.

    What do a teacher, a chiropractor, and a mechanic have in common? We're about to find out, in most intimate detail.

    Its Three Dumbasses in a Trenchcoat Trying to Relationship time.

    Series
    Language:
    English
    Words:
    249,146
    Chapters:
    56/?
    Collections:
    1
    Comments:
    3,038
    Kudos:
    1,160
    Bookmarks:
    220
    Hits:
    37,194
  16. Tags
    Summary

    In Ebott City, circumstances lead a few monsters who are so alike, but so different, to find each other.

    What do a teacher, a chiropractor, and a mechanic have in common? We're about to find out.

    Its Three Dumbasses in a Trenchcoat Trying to Relationship time.

    A censored version of Burlesque (part of the Ebott is a Multiverse series)

    Language:
    English
    Words:
    221,855
    Chapters:
    56/?
    Collections:
    1
    Comments:
    286
    Kudos:
    369
    Bookmarks:
    26
    Hits:
    8,101
  17. Tags
    Summary

    Stretch (US!Papyrus) and Mutt (FS!Papyrus) remember their friend saying he'd like to try being submissive. He's too stuck in his ways to ever do it, though, so they take matters into their own hands.

    Red (UF!Sans) gets tied up against his will.

    Language:
    English
    Words:
    3,428
    Chapters:
    2/5
    Comments:
    4
    Kudos:
    7
    Hits:
    120
  18. Tags
    Summary

    “sweet’art,” he breathed. He sounded pathetic. Voice shifting between a gritty lower pitch, and his usual baritone. It always happened when he got flustered. fuck. His chest heaved. His eyes fluttered shut and his brow scrunched. “you keep this up ‘n i won’t be able to keep my hands off’a ‘ya.”
    Red didn’t get to see the mischievous smile that crept up on your cheeks. Instead, he expected you to pull away from him. To mumble an apology. To repeat that he looked good. You two would talk for a little bit before you drifted back off to sleep. And he would go home alone.
    Something he absolutely was not expecting, was for you to get closer to him. He could feel the warm breath from your lips on his bones. Right below his ear. And you whispered, “I know,” right before placing a delicate kiss right there.

    Language:
    English
    Words:
    11,325
    Chapters:
    3/3
    Comments:
    2
    Kudos:
    22
    Bookmarks:
    5
    Hits:
    376
  19. Tags
    Summary

    Just fresh out of marketing school, you get a sales team manager job at the company next door, NexGen Corp. If there was a company you wanted to work at, it was definitely this one. But now that you got your position, you start to second doubt yourself, trying to balance your new responsibilities, workload, the many new encounters you'll come across, and your personal life. To top it off, it seems you really can't get along with one of your co-worker...

    Language:
    English
    Words:
    19,351
    Chapters:
    5/?
    Kudos:
    18
    Bookmarks:
    2
    Hits:
    227
  20. Tags
    Summary

    You just need a place to stay while you make it through the hell America calls "College".

    Working for Asgore at a cozy, little tea and flower shop and depending on your friend, Nay, to stay sane, you try to ignore whatever drama is going on with Audrey and her skeleton army.

    But as trust crumbles and romance fades, what will you do when the skeletons start to come to you for comfort and any semblance of love?

    What happens when the skeletons start to expand their horizons beyond Audrey, and how will you avoid the wrath of the said woman when shit hits the fan?

    Who the fuck knows, certainly not you.

    -------
    This fic was originally discontinued, but I'm rewriting and continuing this shit bbg

    Series
    Language:
    English
    Words:
    5,556
    Chapters:
    3/?
    Comments:
    25
    Kudos:
    345
    Bookmarks:
    68
    Hits:
    4,284

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