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  1. Tags
    Summary

    Sans isn't born into a happy home. Regardless, he tries to make the best of it for him and his little brother. Something made infinitely harder by his father's actions.

    Language:
    English
    Words:
    32,456
    Chapters:
    12/?
    Comments:
    29
    Kudos:
    91
    Bookmarks:
    11
    Hits:
    1103
  2. Tags
    Summary

    You went to the bookstore one day to buy some manga.

    You got a whole lot more than you bargained for.

    You end up somehow saving the Royal Scientist's life, and her fiancée can't thank you enough for it.

    So that's how you find yourself surrounded by people who love you for who you are and don't want you to change.

    But what's up with these strange dreams you're having? And, why does a certain punny skeleton get so spooked at the number 17? And...who is that tall skeleton with cracks in his face that you keep seeing in your dreams? Did the ambassador of monsters just join your swim team? Can this summary get more cliché?

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

    This is my first fanfiction on AO3, so constructive criticism is appreciated!

    Sporadic updates because life. ;u; I'm sorry. Longer chapters to make up for inactiveness: 5k words minimum.

    "UNDERTALE" by Toby Fox

    Series
    Language:
    English
    Words:
    51,863
    Chapters:
    9/?
    Comments:
    89
    Kudos:
    208
    Bookmarks:
    47
    Hits:
    2988
  3. Tags
    Summary

    A bunch of drabbles I wrote from request for the 2nd Undertale anniversary. More will be added as they are written.

    Language:
    English
    Words:
    8,600
    Chapters:
    8/?
    Comments:
    14
    Kudos:
    19
    Bookmarks:
    1
    Hits:
    125
  4. Tags
    Summary

    The War is almost over and Agent Weiss, whose true name is Grillbz, wants a final chance to screw over the humans, so he volunteers for a mission no one else will touch: to infiltrate human intelligence as a Companion and spy on Dr. Gaster, a monster who defected to the humans.

    Language:
    English
    Words:
    2,225
    Chapters:
    1/1
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    8
  5. Tags
    Summary

    Once began, Twice began, but never new.
    There's so many things i have never told you.
    Things we never even knew.
    Now the sky is finally blue.
    All thanks to you.

    You've given us all somewhere to go.
    It's time for you to finally know.
    Some things go fast, others slow.
    But you've shown me the way to go.

    New beginnings, begin again.
    You will always be my friend.
    In the dark and lonely rain.
    Begin again and never end.

    "New Beginnings, For everyone. For the good of everybody."

    Language:
    English
    Words:
    17,435
    Chapters:
    17/?
    Comments:
    102
    Kudos:
    14
    Bookmarks:
    1
    Hits:
    657
  6. Tags
    Summary

    Sans think s everything is going fine until weird things start happening

    Language:
    English
    Words:
    86
    Chapters:
    1/?
    Kudos:
    1
    Hits:
    37
  7. Tags
    Summary

    well it's not frisk. sorry.

    Language:
    English
    Words:
    2,540
    Chapters:
    1/?
    Hits:
    3
  8. Tags
    Summary

    It was just a subject a creation made by Gaster an on going experiment to create the perfect killing machine a monster with the determination of a human cable of ribbing anyone apart. But Gaster made a lethal mistake how would Gaster contain a such creature with an intelligence that matches his own and magic to rival even the strongest of boss monsters, the king. The answer? This horrible creature escapes into monster society injuring multiple monsters that came across its path. There seems to be no end to the violence and the terrible creation in question, calls itself Sans.

    It is a lot better than it sounds I just suck at summaries XD

    Language:
    English
    Words:
    12,115
    Chapters:
    7/?
    Comments:
    20
    Kudos:
    34
    Bookmarks:
    6
    Hits:
    612
  9. Tags
    Summary

    While working on an experiment to help strengthen monsters, Gaster finds himself in a horrible predicament. One, the experiment backfired, leaving him weakened. Two, the potion he made did something else entirely when it exploded in his face. It triggered his monster heat, and the King Asgore wanted him to come today! This wouldn't be so bad if this wasn't during tense times, and the king didn't have an obsession with him.

    UPDATED! Updating the chapters.

    Series
    Language:
    English
    Words:
    29,088
    Chapters:
    5/?
    Comments:
    25
    Kudos:
    123
    Bookmarks:
    16
    Hits:
    4488
  10. Tags
    Summary

    After spending centuries trapped in the Underground, monsters have become bitter towards humanity and violent towards each other. Seven humans have fallen, and six have been brutally murdered, their souls stolen for King Asgore's eventual revenge.

    It seems there is no escape from both the literal and the figurative darkness.

    And then the eighth human falls and begins changing lives... especially the life of one monster in particular.

    Underfell AU, Pacifist Run.

    Language:
    English
    Words:
    5,032
    Chapters:
    4/?
    Comments:
    8
    Kudos:
    19
    Bookmarks:
    4
    Hits:
    123
  11. Tags
    Summary

    Gaster loves his sons. He loves Sans, his budding young scientist, energetic, dedicated, and ready to change the world. He loves Papyrus, his sensible, supportive, caring boy who still makes sure all of them eat three square meals and get enough sleep. He loves them more than anything else in the world, and all he wants is for them to have the life they always deserved.

    No matter what it t͚̫͔a̛̗̤͖̪͓̠̱͞ͅk̡̙̖̫̲̩͍͔̺̹̕e͓̤͘͜ş̪͍̺̗̕.

    Language:
    English
    Words:
    103,888
    Chapters:
    27/52
    Comments:
    786
    Kudos:
    387
    Bookmarks:
    48
    Hits:
    5303
  12. Tags
    Summary

    Darkness does not always equate to evil, just as light does not always equate to good.

    Why is this so difficult to understand?

    Language:
    English
    Words:
    37,424
    Chapters:
    12/?
    Comments:
    42
    Kudos:
    31
    Bookmarks:
    7
    Hits:
    300
  13. Tags
    Summary

    Sans is tired of the resets. He decides to do something about it to change things for the better. Everything sort of goes downhill from there. Warning - seriously, this story gets dark. Like, really fucking dark. Don't say I didn't warn you.

    Language:
    English
    Words:
    301,329
    Chapters:
    80/?
    Comments:
    1456
    Kudos:
    885
    Bookmarks:
    86
    Hits:
    18854
  14. Tags
    Summary

    Anya has finally moved on from a bad past to a new one.
    She were given a second chance to repair her life, which is not easy.
    Nevertheless, she's determined to show kindness when needed.

     

    Inspired of Mobtale from http://nyublackneko.tumblr.com/ & https://kiatokid.tumblr.com/tagged/undermafia

    Language:
    English
    Words:
    5,276
    Chapters:
    2/?
    Kudos:
    5
    Bookmarks:
    2
    Hits:
    28
  15. Tags
    Summary

    It’s been about a year since the Monsters that were living under Mt. Ebott were freed by the ten year old, now eleven year old, Frisk. They are living happily on the Surface among the Humans who both love and accept them aside from some who are still getting used to the fact that they are not alone. Everyone is fairly happy and things have been worked out, among political standards and simply neighborly standards, so everyone can settle down. But one day, during school on a rainy September morning, Frisk finds themself staring out the second floor window, catching sight of something that would shake up their life -
    and the world itself.

    [This work is dedicated to my best friend Clay, but all are welcome to read it!!]

    Language:
    English
    Words:
    75,698
    Chapters:
    18/?
    Comments:
    252
    Kudos:
    22
    Bookmarks:
    5
    Hits:
    1019
  16. Tags
    Summary

    Celebrate Shipping Pride Month with me as I go through the days of September with thirty days of ships. These will be in different AUs and pretty much all will be romantic.

    Language:
    English
    Words:
    30,006
    Chapters:
    18/30
    Comments:
    18
    Kudos:
    39
    Bookmarks:
    1
    Hits:
    2216
  17. Tags
    Summary

    A short drabble that may turn into a series of drabbles while my laptop gets repaired. Gaster enjoys something new he was sure he would find boring.

    Language:
    English
    Words:
    559
    Chapters:
    1/1
    Kudos:
    2
    Hits:
    12
  18. Tags
    Summary

    Put in the Undertale fandom, because despite how far we've traveled from our original destination, there are still some ties to that universe. It would be more accurate to say this takes place in The Sin Mansion universe, and it will be helpful to read that, as well as Into the Fire, if you want background on Voidster.

    Doll is a new character, and this is her story. Her rescue, her life, and possibly her death. I don't know how the story will end, but I intend for the journey to be vividly emotional, exploring dark themes such as abuse of the mentally ill, stockholm syndrome, brain damage, and sometimes unwilling dominance/submission.

    Language:
    English
    Words:
    24,735
    Chapters:
    7/?
    Comments:
    10
    Kudos:
    18
    Bookmarks:
    4
    Hits:
    143
  19. Tags
    Summary

    There was one human that fell that never made it to Asgore.

    Language:
    English
    Words:
    1,106
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    17
    Bookmarks:
    1
    Hits:
    83
  20. Tags
    Summary

    (Story also on DeviantArt! More updates there! Also, credit to SketchyGarden on DA for help with the title!) Frisk, a young criminal, is trying her best to survive on the streets along with her large gang. One day, while running away from authorities, she falls down Mt. Ebott, into the world of monsters. Merciless at first, she kills all who stand in her way without a second thought, until she meets Papyrus. She tries to kill him too... but Papyrus fights back, and wins the fight. This encounter changes everything.

    Papyrus must try and teach Frisk how to care about other living beings, while Frisk, and everyone else in the underground, is tormented by Frisk's past mistakes... until the underground breaks.

    (Notice: There's no canon ships in this fanfic, aside from things like Dogamy/Dogaressa. Though, feel free to tell me who you ship in this AU, and in general, what you think of it!)
    (Also, the comment section affects the story greatly. I'll explain more in the notes of the first chapter!)

    Language:
    English
    Words:
    26,819
    Chapters:
    19/?
    Comments:
    4
    Kudos:
    8
    Hits:
    177

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