1 - 20 of 4797 Works in Sans (Undertale)/Reader

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  1. Tags
    Summary

    a collection of undertale, underfell, underswap, and swapfell drabbles and oneshots, in which you, an insufferable jackass and resident bad influence are inexplicably irresistible to literally every skelebabe there is.

     

    Expect really, really heavy angst, uncomfortable, inexcusably unhealthy relationships, and emotional manipulation. And fluff, because not everything in the world is shitty.

     

    Taking requests!

    Language:
    English
    Words:
    11,380
    Chapters:
    8/?
    Comments:
    85
    Kudos:
    205
    Bookmarks:
    31
    Hits:
    3065
  2. Tags
    Summary

    You fell and you can't remember a damn thing. Not who you are nor where you came from. But somehow you still feel all your past sins still crawling up your back, even if you can't recall them specifically. Maybe you'll survive, maybe you won't. Maybe you don't really give a shit.

    --Underfell Sans finds you half dead in the snow and takes pity on you for god knows what reasons--

    Language:
    English
    Words:
    6,446
    Chapters:
    4/?
    Comments:
    26
    Kudos:
    47
    Bookmarks:
    6
    Hits:
    657
  3. Tags
    Summary

    You've never been able to get over your crush for Sans, and it only hurt worse seeing him together with Toriel.

    You're just a silly human, afterall...

    Language:
    English
    Words:
    7,097
    Chapters:
    5/?
    Comments:
    54
    Kudos:
    197
    Bookmarks:
    37
    Hits:
    1462
  4. Tags
    Summary

    You'd like to admit that you're one of the few artists you know who isn't starving. You don't live with your parents, painting in their basement like you were making meth. You were big, head-strong and open about your career, creating larger than life murals for your city. When creating any work, you dive in head-first. When you meet someone new, and a monster at that, you dive in head-first. And when she tells you about a friend-of-a-friend who'd love to have his entire room painted, you know damn well you're diving in head-first.
    [Each chapter is 1k words, and will be updated daily.]

    Language:
    English
    Words:
    2,000
    Chapters:
    2/?
    Comments:
    7
    Kudos:
    24
    Bookmarks:
    3
    Hits:
    90
  5. Tags
    Summary

    In a universe filled with so many possibilities, you come to realize that life hates you, and your only chance of getting out of it alive, is to accept fate, and just roll with the punches. However, with that in mind, you thought having a soulmate was for suckers, and refused to give in to the scam. But as previously mentioned, the universe hates you, so why not have more than one soulmate, they said.

    (Just a bunch of soulmate au's I've thrown together. This is supposed to be fun.)

    Language:
    English
    Words:
    15,522
    Chapters:
    4/25
    Comments:
    13
    Kudos:
    56
    Bookmarks:
    12
    Hits:
    553
  6. Tags
    Summary

    We've all heard of that cliche trope where the main character is suddenly thrown into a whole new world that they've read about or watched; so waking up in that exact situation with a very familiar skeleton monster calling you brother wasn't completely out of left field.
    Except it was, and this isn't normal Undertale- This is your Undertale. Worse yet, you never finished this world, and that's caught someone's attention.

    Language:
    English
    Words:
    18,444
    Chapters:
    14/?
    Comments:
    54
    Kudos:
    117
    Bookmarks:
    17
    Hits:
    901
  7. Tags
    Summary

    Reader insert where you get to decide your path!

    Being kicked out is hard, what's even harder is the fact that your Dad has a giant ass mansion and won't let you stay until you find a place of your own.

    House hunting us stressful and you feel as if you've exhausted all your options. That is until your sister sends you a link to a listing that reads; 'ROOMMATE WANTED! NO TIME WASTERS!'

    A roommate huh? You can roll with that.

    Wish you'd known about the whole Skeleton thing first though.

    So hey, this is a story I've always come back to in my mind. I tend to fandom hop alot but whenever the undertale mood strikes I'm always coming back to this. Hope you like and make sure to press that thumbs up button.

    ...

    ... no wait, wrong platform.

    Read.

    It

    And

    Comment.

    Thanks.

    Amen.

    Language:
    English
    Words:
    4,264
    Chapters:
    3/?
    Comments:
    9
    Kudos:
    34
    Bookmarks:
    2
    Hits:
    249
  8. Tags
    Summary

    He had been having dreams of the same cute little drunk human for almost a year now. They were vivid and she was fun to talk to, and he was convinced that his 'dreams' were accidental manifestations of her magic. Magic she didn't even realize she had. But that magic may have just pulled her into a world of danger.

    (not sure where I'm going with this but I love mafiafell sans. Lets see how this goes. Constructive criticism welcome. I'm a writing noob.)

    Language:
    English
    Words:
    29,957
    Chapters:
    16/?
    Comments:
    354
    Kudos:
    601
    Bookmarks:
    125
    Hits:
    8229
  9. Tags
    Summary

    You're heading off on a two-night trip with Alphys and Undyne...
    and leaving Sans by himself with his nightmares.
    Oops.

    Language:
    English
    Words:
    3,819
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    10
    Bookmarks:
    2
    Hits:
    94
  10. Tags
    Summary

    Your parents were always cold to you.
    Yes, they bought you a smartphone when you turned 12 just to be able to know your location at any moment.
    You were starving.
    Not for food.

    You were starving for affection.

    So when you heard your parents say they were going to sell you, you did what seemed the wisest at the moment.
    You climbed Mt. Ebott, a place no one would look for you.
    And you fell.

    What you didn't expect was to fall and find yourself in a fantasy world full of magic, deities and dragons.

    Oh, and skeletons.

    Language:
    English
    Words:
    4,707
    Chapters:
    2/?
    Kudos:
    23
    Bookmarks:
    5
    Hits:
    165
  11. Tags
    Summary

    A collection of oneshots written by me and my little fanfiction sister, HyperCircuit, on our weekly fic exchanges. A mix of fluff, angst, and other stuff. Keep in mind that these were all written in under an hour and were quickly proofread :)

    We are not taking requests, but we are not opposed to hearing suggestions!

    Language:
    English
    Words:
    1,313
    Chapters:
    2/?
    Kudos:
    2
    Bookmarks:
    1
    Hits:
    24
  12. Tags
    Summary

    You didn't think you fitted in anywhere. You'd only really posted on the forum because your little brother coerced you into it. You highly doubted anyone would care about your ideas, much less how you felt. You didn't actually expect a response from anyone.

    Yet, somehow... You end up getting just that. From a skeleton.

    Who maaaybe just ends up becoming your best friend.

    Language:
    English
    Words:
    2,660
    Chapters:
    3/?
    Collections:
    3
    Comments:
    14
    Kudos:
    58
    Bookmarks:
    6
    Hits:
    302
  13. Tags
    Summary

    You were just a normal college student, you didn't expect to wake up in a house full of very familiar-looking skeletons from different games, let alone next to a giant one with a gaping hole in its head. You were already stressed out with trying to find out how you had gotten there in the first place, you didn't need the added stress of finding out that you were the soulmate to all of them coming in a facepalming you when you were already knocked on the ground.

    (I'm terrible at summaries, give it a try!)

    Language:
    English
    Words:
    8,268
    Chapters:
    3/?
    Comments:
    12
    Kudos:
    49
    Bookmarks:
    10
    Hits:
    275
  14. Tags
    Summary

    You have had a long day at work and just wanna go home to relax but your neighbors have other things in mind.

    Language:
    English
    Words:
    28,450
    Chapters:
    7/?
    Comments:
    74
    Kudos:
    217
    Bookmarks:
    55
    Hits:
    3384
  15. Tags
    Summary

    Falling.
    Is this what it’s like to die?
    Scratching.
    I don’t want to fall away.
    I hear him call for me and my head stops hurting.

    Too bad I only see him when I’m asleep. Maybe if he was always around, the world wouldn’t shake and I wouldn’t be falling.
    But here I am, falling into the darkness that is my soul.

    Language:
    English
    Words:
    5,527
    Chapters:
    5/?
    Kudos:
    7
    Bookmarks:
    3
    Hits:
    111
  16. Tags
    Summary

    You and your little bro got kicked out of your apartment. Your new monster friend helped you find a place. Now you live with skeleton brothers. Not until a successful breakthrough, you now live with multiple skeleton brothers from different alternate universes until they find a way to get back home. An arduous task it is.

    Alternate Title: Alternate versions of the skele-bros are taking over your universe because Sans can't keep his freaking curiosity to himself.

    Season 1 (1-57): finished
    Season 2 (58-?): ongoing

    Language:
    English
    Words:
    188,288
    Chapters:
    79/?
    Comments:
    1875
    Kudos:
    1742
    Bookmarks:
    203
    Hits:
    31749
  17. Tags
    Summary

    You, a local detective, and your team have "caught" Sans the insufferable skeleton once again...somehow.... and are questioning him. He talks the most when interacting with you so you're in charge of "interrogating" him. Again. You totally do not like like this.

    Language:
    English
    Words:
    19,842
    Chapters:
    10/?
    Comments:
    50
    Kudos:
    115
    Bookmarks:
    21
    Hits:
    1295
  18. Tags
    Summary

    You hated your job. But most importantly, you hated monsters for making your job harder.

    This marshmallow of a skeleton keeps insisting you're his soulmate. You did not want to be his soulmate nor did you care. You just wanted your job to be over as soon as possible.

    Couldn't he just leave you alone- ...is that a taco on his head?

     

    DATING START!

    Language:
    English
    Words:
    1,906
    Chapters:
    2/?
    Comments:
    16
    Kudos:
    66
    Bookmarks:
    10
    Hits:
    494
  19. Tags
    Summary

    You are dreaming... right? It’s gotta be. Sure the monsters look realistic as heck and the whole plot is in order but that’s dream stuff, a pipe dream. You’re an avid Undertale fan, so having this opportunity in the first place, you might as well enjoy it until you wake up... if it is actually a dream. And you’re sure hoping it’s not!

    THIS IS A CASUAL REALITY MEET UNDERTALE STORY.

    ("How often do you update?" No. [School is back on, updates are unpredictable and my creativity is dwindling.])
    ("Do you take criticism?" Yes, as long as it is reasonable. I might not be able to change the whole plotline, but grammar and such are greatly appreciated!)
    ("Is reader a girl or boy?" Your choice! The pronouns should all be gender-neutral. If you see a typo, please comment on it. I read and treasure every single goddamn comment you guys post and it always makes me smile!)
    BE WARY OF CHAPTERS 14 & 18!

    Language:
    English
    Words:
    49,955
    Chapters:
    24/?
    Comments:
    312
    Kudos:
    320
    Bookmarks:
    75
    Hits:
    4925
  20. Tags
    Summary

    Rumor has it that the house on the hill is haunted. Strange things always seem to happen when someone new moves in. No one ever lives in the house long. Then you came along...

    Moving is just the fresh start that you need. You finally escaped your overbearing datemate, quit your dead-end job, and found a place of your own. Sure, the old house is rundown and looks a little creepy but with a little patience and elbow grease, you can turn this old fixer-upper into a real home. No matter what those silly rumors said.

    Wait... You didn't leave your phone there when you put it down...

    Did you?

    Language:
    English
    Words:
    2,280
    Chapters:
    1/?
    Comments:
    23
    Kudos:
    41
    Bookmarks:
    9
    Hits:
    264

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