1 - 20 of 1939 Works in Underfell Sans (Undertale)

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  1. Tags
    Summary

    Again…

    They couldn’t believe it, years of progress wasted, a promise broken, how could they face everyone after what they had done?

    But with a blurred memory and a familiar, yet somewhat strange, turn of events, maybe things are not what they expected.

    Language:
    English
    Words:
    72,327
    Chapters:
    28/80
    Comments:
    28
    Kudos:
    51
    Bookmarks:
    8
    Hits:
    1433
  2. Tags
    Summary

    Just a bunch of Age-re/Little Space Undertale AU Oneshots. Requests are >ALWAYS< open! :D

    Language:
    English
    Words:
    5,370
    Chapters:
    2/?
    Comments:
    30
    Kudos:
    35
    Bookmarks:
    6
    Hits:
    391
  3. Tags
    Summary

    A science experiment created by humans (Y/n) Knows little of her own kind, and little of the world from hiding with her human family. When the barrier breaks and monsters integrate with society (Y/n) sees this as her chance to have a normal life. When she finally sees another skeleton who's to say what may happen?

    Language:
    English
    Words:
    47,260
    Chapters:
    22/?
    Comments:
    167
    Kudos:
    521
    Bookmarks:
    105
    Hits:
    10933
  4. Tags
    Summary

    Reader gets strange dreams of a deep female voice and feline eyes the color of the moon.
    These dreams lead to a new form and a missing mother.
    How will reader cope with being treated as a animal and the loss of her family.
    As time goes by she loses her past memories and her emotions.
    Can the living skeletons she meets in a forest help her.
    We'll just have to wait and see.

    Language:
    English
    Words:
    9,432
    Chapters:
    8/?
    Comments:
    9
    Kudos:
    57
    Bookmarks:
    12
    Hits:
    784
  5. Tags
    Summary

    You just started your last year of college and you need a job. Badly.
    When a wanted ad online leads you to the forests surrounding Mt. Ebott, to a giant, brick house full of monsters, you wonder if this might be worth it. Some of these monsters seem alright; friendly, even.
    Others - downright terrifying.
    ...but you really need this job.

    (more tags will be added as the story updates; i'm sorry they kind of seem all over the place I'm not good at tags)

    (Note: I've decided to raise the story rating from mature to explicit due to some of the heavier themes and sexual content in later chapters. Thank you for understanding!)

    Language:
    English
    Words:
    625,291
    Chapters:
    46/?
    Comments:
    2378
    Kudos:
    2061
    Bookmarks:
    399
    Hits:
    71062
  6. Tags
    Summary

    Lust Sans has never been very proud of his AU which is often harshly judged by his fellow San's & Papyrus's. Finally they've reached the happy ending and no more resets, but what excites him even more is now that there's no longer a need for the 'heat injections' he can ask Grillby to officially be his date-mate! Unfortunately it doesn't go as planned and Sans is heartbroken.

    Papyrus and the others convince Sans to come join them at Muffet's new Club/Restaurant named 'Sweets & Treats'. There Sans meets an attractive human male server who offers to be his friend, everything seems like it's looking up but there is something strange about this human...why does he smell like a female?

    (I feel like Underlust is a bit under apricated because of its content, the idea that other AU's look at it differently to is kind of sad. The MC is an original character I created inspired partly by my character in Violentale. There will be a lot of various sexual and potentially triggering content I will try to mark chapters with a * if there is intense sexual content or possibly triggering material in the chapter.)

    ENJOY~

    Language:
    English
    Words:
    6,020
    Chapters:
    3/?
    Comments:
    2
    Kudos:
    11
    Bookmarks:
    7
    Hits:
    163
  7. Tags
    Summary

    Various short snippets set in the 'ain't this the life' series that didn't fit elsewhere. Rating and content warnings may vary.

    Series
    Language:
    English
    Words:
    109,262
    Chapters:
    33/?
    Comments:
    1825
    Kudos:
    1217
    Bookmarks:
    52
    Hits:
    28836
  8. Tags
    Summary

    After a fight to the death, Papyrus offers you protection from the murderous monsters by allowing you to stay in his home as his captive. What he didn't anticipate was that he would come to develop feelings for you. Feelings that, unexpectedly, were also shared by the human now under his care.

    - Set in the Underfell universe.
    - Reader is over 18.

    (A simple self-indulgent story with UF! Papyrus x Reader now turned into a longfic portraying Bravery's journey through the world of Underfell)

    Language:
    English
    Words:
    14,545
    Chapters:
    7/?
    Comments:
    12
    Kudos:
    134
    Bookmarks:
    15
    Hits:
    1477
  9. Tags
    Summary

    May is trying to make her way through life undisturbed but with an unwanted ability to feel all emotions around her, she finds it impossible. Or so she thought before she met a certain skeleton that turns her life upside down.

    Language:
    English
    Words:
    128,627
    Chapters:
    26/80
    Comments:
    172
    Kudos:
    246
    Bookmarks:
    41
    Hits:
    5539
  10. Tags
    Summary

    You and your partner decide to foster monsters. You end up getting quite a few. It's a full house and everyone has their own issues, but it's the best family you could have ever dreamed of.

    Language:
    English
    Words:
    6,743
    Chapters:
    3/?
    Comments:
    12
    Kudos:
    39
    Bookmarks:
    6
    Hits:
    274
  11. Tags
    Summary

    you tried warning them that their date—mate was a menace and that, although supposedly soulmates, was manipulative. they didn’t listen. it wasn’t your problem anymore. you still feel bad for those five. they didn’t deserve the oncoming tragedy awaiting them. what they did deserve was a chance at becoming better, at feeling better about themselves. begrudgingly, helping them would mean helping the rest, and that was something you would put the weight in so that those five could live happily again.

    [ lowercase intended ] [ short story ] [ no romance ]

    Language:
    English
    Words:
    15,673
    Chapters:
    6/10
    Comments:
    10
    Kudos:
    58
    Bookmarks:
    18
    Hits:
    476
  12. Tags
    Summary

    SO- IM FIXATING ON ANGST AND UNDERFELL SANS SO- im sorry lmao i-
    Anyways i will be writing oneshots THAT ARE NOT SMUT because idk how to write smut. SMUT IS POG THO- I JUST CANT WRITE IT
    these will all probably be sans uf centric lmao

    Language:
    English
    Words:
    28
    Chapters:
    1/1
    Hits:
    6
  13. Tags
    Summary

    The baby is coming and Red isn't answering his phone, leaving Sans alone to face the biggest challenge of his life. (Home Sweet Home follow up)

    Language:
    English
    Words:
    4,000
    Chapters:
    1/1
    Comments:
    16
    Kudos:
    36
    Bookmarks:
    4
    Hits:
    212
  14. Tags
    Summary

    The Great Arena was created not long after the monsters came out of Mount Ebott. It was created to entertain the growing population. To enter this tournament you needed, if you were human (a mage), to have a pure soul with a unique trait of character.

    -Red for Determination. (the rarest and one of the most powerful.)
    -Orange for Bravery.
    -Yellow for Justice. (Actually a common one but also one of the most powerful.)
    -Aqua for Patience.
    -Blue for Integrity.
    -Purple for Perseverance
    and finally,
    -Green for kindness.

    The last type of soul wasn’t allowed into the tournament because,,, well. They were too kind. Plus the only magic they possessed was healing magic. Not useful in fight.

    Now, If you were a monster you needed to be a ‘Boss’ also commonly known as ‘Alpha’ monsters.

    This tournament was broadcasted all around the world and you quickly became a huge fan of the event. The first time the Arena opened you were 7. Since then your only wish was to be part of the contest.

    Language:
    English
    Words:
    1,129
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    17
    Bookmarks:
    3
    Hits:
    99
  15. 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:
    63,286
    Chapters:
    25/?
    Comments:
    300
    Kudos:
    280
    Bookmarks:
    56
    Hits:
    4249
  16. Tags
    Summary

    Drabbles* set in the "Ebott is a Multiverse" series.
    Unless marked otherwise, assume these are very much Canon to the series.

    *no guarantee that any chapter will actually be a drabble

    Series
    Language:
    English
    Words:
    29,824
    Chapters:
    16/?
    Comments:
    381
    Kudos:
    215
    Bookmarks:
    18
    Hits:
    3049
  17. Tags
    Summary

    Y/N just wanted to get away from his Cyber Security job. Get away from his computer for just a while, but instead of a peaceful vacation... He got a plane crash, a concussion, and an island of creatures that want to kill him.

    He really really should have paid more attention in boy scouts....

    Language:
    English
    Words:
    38,987
    Chapters:
    17/?
    Comments:
    132
    Kudos:
    392
    Bookmarks:
    58
    Hits:
    6267
  18. Tags
    Summary

    Error can't, he just can't. ∂̶̣͉͒̈́̉̈́̕ß̸̆∂̶̣͉͒̈́̉̈́̕ß̸̆ is ruining his life. He doesn't want to do this forced job anymore. He can't take it anymore, he just wants everything to be over.

    ∂̶̣͉̯̲̳͒̈́̉̈́̕ß̸̆∂̶̣͉̯̲̳͒̈́̉̈́̕ß̸̆ found out and Error is terrified for what's to come.

    More for the ones he told then for himself.

    Ink realises he's not the only one suffering from ∂̶̣͉͒̈́̉̈́̕ß̸̆∂̶̣͉͒̈́̉̈́̕ß̸̆. He's just as sick as Error is from his forced job. Bad time helping the one he hates because it just got him in trouble.

    ∂̶̣͉̯̲̳͒̈́̉̈́̕ß̸̆∂̶̣͉̯̲̳͒̈́̉̈́̕ß̸̆ will never go easy on him again.

     

    What will they do now?

    keep reading, to find out -
    enjoy

    1. Forced... - The rescue
    chap: 12/? (so far)
    2. Recovery <3
    chap: 0
    3. =Confession=
    chap: 0
    4. Finally free
    chap: 0

    (FGOD error belongs to harrish6)
    (Characters not by me)
    (Cover drawing by me (Me Paina))
    (Story by me (Me Paina))

    Series
    Language:
    English
    Words:
    7,752
    Chapters:
    12/?
    Comments:
    29
    Kudos:
    96
    Bookmarks:
    10
    Hits:
    1934
  19. Tags
    Summary

    Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.

    A skeleton monster to be precise.

    With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.

    What a surprise for you when you find out that someone does. A lot of someones.

    Language:
    English
    Words:
    124,530
    Chapters:
    19/?
    Comments:
    951
    Kudos:
    1338
    Bookmarks:
    301
    Hits:
    27693
  20. Tags
    Summary

    Prequel to Omega's Respite

    When the Underswap skeletons make it to the surface, Stretch is not at all impressed with the taller Fell brother. Sparks fly in between them, but can they sort out their differences and learn to appreciate each other?

    In the meantime, Sans is infatuated with his friend, the other Fell brother, Red. But Red is wrapped up in his own bad coping skills, and doesn't want anything more than a fuck buddy. How will Sans get Red to open up more and give real romance a try?

    Series
    Language:
    English
    Words:
    59,605
    Chapters:
    8/?
    Comments:
    87
    Kudos:
    34
    Bookmarks:
    5
    Hits:
    1116

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