1 - 20 of 22099 Works in Sans (Undertale)

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  1. Tags
    Summary

    Y/n is a singer by the stage name of Ava, she lives a lonely life controlled by past trauma.

    ...Until certain skeleton monsters come and disturb said life..

    Language:
    English
    Words:
    1,793
    Chapters:
    1/?
    Kudos:
    6
    Bookmarks:
    3
    Hits:
    46
  2. Tags
    Summary

    What if you're born into a world where your Soulmate's first words were written on your forearm from the very day you were born?

    What would your Soulmate say to you?

    ======

    Pervert.

    That's the only thing that's on your arm.

    One word. Nothing romantic like "I love you" or "Will you go out with me?"

    Nope.

    You get called a pervert, but why? What will happen in the future for you to even be called that by your Soulmate!?

    ======

    Inspired by Zu-is-here's Soulmate AU prompts.

    Series
    Language:
    English
    Words:
    7,228
    Chapters:
    5/?
    Comments:
    46
    Kudos:
    185
    Bookmarks:
    37
    Hits:
    1419
  3. Tags
    Summary

    Not long after humanity brings itself to the brink of destruction, monsters come from the depths of the earth and establish themselves as the dominant species.

    Now humans are reduced to pets, and there has been little success in trying to communicate with the monsters.

    You just don't see the point of trying anymore.

    Language:
    English
    Words:
    21,208
    Chapters:
    6/?
    Comments:
    231
    Kudos:
    762
    Bookmarks:
    162
    Hits:
    6244
  4. Tags
    Summary

    “It wouldn’t matter anyways.” Sans turned his head to you fully, an artificial grin frozen on his face, “it never mattered.”

    For the first time, you can see the pure exhaustion prevalent in both of his eyelights.

    Despite his smile, Sans looked hollow and drained, as if he hadn't slept for the past three days.

    As if he is too tired to hold on to life.

    Language:
    English
    Words:
    1,254
    Chapters:
    1/?
    Hits:
    0
  5. Tags
    Summary

    After the barrier shattered, Sans started to display rather strange behaviors and physical changes. No one could understand why this had started to happen over the years, making Frisk worry for her friend, this goes on for years after the shattering of the barrier, then one day she finds out what had happened to him.

    It seems, the problems of the Underground wasn't completely over, but now it takes place upon the surface. Will Frisk be able to confess her feelings for Sans after all these years or would his own problems and fears prevent anything from becoming romantic? Read to find out!

    Language:
    English
    Words:
    13,457
    Chapters:
    3/?
    Comments:
    6
    Kudos:
    18
    Bookmarks:
    1
    Hits:
    163
  6. Tags
    Summary

    Machine broken, Rus finds himself stuck in Underfell while he works on getting it fixed. Until then, he has to deal with Edge, Red's (maybe not so) insufferable brother.

    Language:
    English
    Words:
    4,740
    Chapters:
    2/?
    Comments:
    9
    Kudos:
    28
    Bookmarks:
    2
    Hits:
    110
  7. Tags
    Summary

    Gimme requests and I’ll randomly choose em

    Language:
    English
    Words:
    179
    Chapters:
    1/?
    Hits:
    11
  8. Tags
    Summary

    you're a vampire scientist who works with two skeletons, but the third one worrys to much for your taste. but how could you say no to that cinnamon bone?

    Language:
    English
    Words:
    1,469
    Chapters:
    2/?
    Comments:
    7
    Kudos:
    22
    Bookmarks:
    8
    Hits:
    214
  9. Tags
    Summary

    Red appears in a strange world unlike his. Everyone says hi to him, everyone worries about him...and he can see the sun!! What was going on?

    It didn't matter. What mattered to him was keeping far away from Gaster...and keeping his baby safe.

    (A story that just wouldn't leave me alone, so I'm back, again, here, right now. Will include very much explicit sex scenes at later dates, and I'll put warnings up)

    Series
    Language:
    English
    Words:
    116,797
    Chapters:
    62/?
    Comments:
    665
    Kudos:
    290
    Bookmarks:
    36
    Hits:
    4903
  10. Tags
    Summary

    "And so... We're going to be... er, fosters, of a sort." I fumble, smirking to him as he stares at me, wide-eyed.

    Sans's jaw drops. "No." Complete and utter disbelief.

    And I couldn't be happier. Kris would finally be safe...

    Language:
    English
    Words:
    8,451
    Chapters:
    8/?
    Comments:
    7
    Kudos:
    6
    Hits:
    140
  11. Tags
    Summary

    Living on Pelican Bay was an easy life, truly. Wake up, tend to the animals, go fishing, say hi to the townsfolk.

    Things change when their pleasant island lives are touched by neighboring lands' conflicts, a pleasant meeting tinged with despair, and what normal lives they lead are shaken up leaving the small island to wonder: is ignorance truly bliss?

    Language:
    English
    Words:
    6,468
    Chapters:
    4/?
    Comments:
    51
    Kudos:
    54
    Bookmarks:
    9
    Hits:
    301
  12. Tags
    Summary

    Everything was going fine until the machine exploded. Well, as fine as it could be with everyone dead, anyway. For Sans, it just keeps getting better. Slim never saw it coming.

    Deep in the Void, the man who speaks in hands meets a monster who sees without eyes.

    Language:
    English
    Words:
    34,691
    Chapters:
    11/?
    Comments:
    68
    Kudos:
    45
    Bookmarks:
    4
    Hits:
    697
  13. Tags
    Summary

    The RESET saved the world, but not everything was saved. With Dat gone from her life and raising Cherry alone, Zerrus continues to face her sins with a constant reminder.

    Cherry knows something is wrong, and she's determined to find out what.

    Series
    Language:
    English
    Words:
    23,714
    Chapters:
    6/?
    Hits:
    8
  14. Tags
    Summary

    Sequel to "Star Catcher", Swapfell Sans copes with past events and a new pregnancy.

    Series
    Language:
    English
    Words:
    27,266
    Chapters:
    25/?
    Comments:
    63
    Kudos:
    300
    Bookmarks:
    25
    Hits:
    3768
  15. Tags
    Summary

    After hundreds of resets, most of them Genocide Runs, Sans has had enough. He takes matters into his own hands and manages to absorb one of the human souls and escape the Underground. However, now he needs to find six more human souls in order to break the barrier and save monsterkind. Can he muster the intent to kill to save his brother and friends, or perhaps fate will finally lend him a hand and create a path for him to take that is a little less murdery?

    Language:
    English
    Words:
    6,974
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    34
  16. Tags
    Summary

    Horror finally receives word from his missing husband Lust, a year after he was kidnapped.
    Determined to find his beloved husband, Horror arrives at the address he had been given.
    Seems like something darker is at play. And it looks like "He" isn't about to let Horror win.
    (Inspired by the horror game "Lust for Darkness")

    Language:
    English
    Words:
    5,361
    Chapters:
    4/?
    Comments:
    10
    Kudos:
    14
    Bookmarks:
    2
    Hits:
    119
  17. Tags
    Summary

    30 days was a mere fraction of the time Geno and Reaper had together. Add in the multiverse and all the other timelines out there on top of an eternity and you have a formula for an infinite amount of experiences the two get to share.

    What else goes on in the life of a glitch and a god?

    Well, let's take a look!

    (This story is a partial continuation of A Glimpse Into Forever. Any chapters not directly related to that story will be marked for your convenience.)

    Series
    Language:
    English
    Words:
    110,414
    Chapters:
    34/?
    Comments:
    1180
    Kudos:
    371
    Bookmarks:
    36
    Hits:
    9196
  18. Tags
    Summary

    As the human's genocidal wrath draws ever closer, Sans makes an unlikely friend.

    Language:
    English
    Words:
    467
    Chapters:
    1/1
    Kudos:
    5
    Bookmarks:
    1
    Hits:
    13
  19. Tags
    Summary

    As a human that's recently moved to the Underground, you've been adjusting to a very different life. You've been treated politely enough, but routines aren't what you're used to, and you don't know anyone closely yet...until one night, you decide to go to a comedy show, and meet someone that changes everything.

    Language:
    English
    Words:
    50,065
    Chapters:
    18/24
    Comments:
    22
    Kudos:
    101
    Bookmarks:
    7
    Hits:
    1350
  20. Tags
    Summary

    Red expects to find peace upon moving to the rocky coastline. Instead, a monkey wrench is thrown into his plans by a little mermonster by the name of Blue.

    Language:
    English
    Words:
    26,679
    Chapters:
    10/?
    Comments:
    114
    Kudos:
    101
    Bookmarks:
    19
    Hits:
    739

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