1 - 20 of 81 Works in Aged-Up Frisk (Undertale)

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  1. Tags
    Summary

    Frisk is panicking. The young monsterling that they’re babysitting has gone... missing.

    Okay, so he’s not exactly missing. Frisk is confident that he’s still in the house, somewhere. But he’d run off in tears after Frisk had solved ‘the most complicated puzzle he’d ever created, ever’ in less than thirty seconds, and had been hiding from them for about half an hour now. Frisk has looked everywhere that they can think of without a lick of luck. But that’s not particularly surprising, as little Rouxls is a slime monster, capable of altering the state of his body at will. For all they know, he’s hiding out in the house’s plumbing system, knowing that there is no way that Frisk would be able to reach him if he’s sitting in a pipe in the middle of the wall.

    Language:
    English
    Words:
    1,041
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    45
  2. Tags
    Summary

    Frisk's heard of the stories about Mt. Ebott.

    They'd heard of children and adults alike disappearing down there, of stories of them haunting the very mountain. There was something off about that mountain, but it had always seemed to draw them in.

    One day, they got too close.

    They fell down, down, down, into a world of carnal desire and misery. The people living weren't happy, they were trapped, they were cursed to live there forever.

    Frisk's always had a bleeding heart.

    Language:
    English
    Words:
    3,191
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    7
    Bookmarks:
    1
    Hits:
    87
  3. Tags
    Summary

    You meet the monster ambassador at a bar, and after flirting with you, (mostly bad jokes, you note), you both end up going back to her place.

    Set 10+ years after the events of canon, so Frisk is an adult.

    Language:
    English
    Words:
    1,479
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    3
    Hits:
    92
  4. Tags
    Summary

    Everyone has made it to the surface, filling each and everyone of them with happiness and astonishment.

    I mean, it was everyone's dream at one point.

    But this pacifist timeline wasn’t like the others; there was someone trying to destroy it for their own sick thrills.

    Though... we won’t allow that to happen.

    Rewritten version of Into You.

    Language:
    English
    Words:
    23,830
    Chapters:
    11/?
    Kudos:
    10
    Bookmarks:
    2
    Hits:
    385
  5. Tags
    Summary

    In which after Frisk frees the monsters they get transported to the BNHA universe. And die. A lot. Chara makes a habit of remembering their time of death. Frisk develops a quirk, and aspires to go to UA. Guess what? They do. Chaos ensues.

    Language:
    English
    Words:
    2,238
    Chapters:
    2/?
    Kudos:
    16
    Bookmarks:
    4
    Hits:
    141
  6. Tags
    Summary

    Sans immediately knows something is different about Frisk, the second he sees them. He also knows they are going to cause him nothing but trouble. He finds he doesn't really care, because he's never felt the way he feels when he sees them before, and because against all odds, they are the kindest creature he's ever met.

    Frisk is desperate to free themself and their friends both from the resets they inadvertently cause and from the barrier. They find an unlikely companion in Sans, and together they try to find some way to let Frisk survive while still doing the right thing. It is all complicated by the feelings that start growing between them.

    Language:
    English
    Words:
    19,158
    Chapters:
    3/?
    Comments:
    10
    Kudos:
    29
    Bookmarks:
    4
    Hits:
    418
  7. Tags
    Summary

    *you find a page among the dirt and the leaves*

    if you are reading this, send help! My name is-and I fell down.
    Down into the underground. It’s cold, dark, and I can’t stop running for my life. The monsters are here. Just like they always told us, they’re REAL. There’s something wrong with them, and the skele-

    *Blood and dust make the rest of the page illegible.*

    Language:
    English
    Words:
    115,664
    Chapters:
    32/32
    Comments:
    191
    Kudos:
    104
    Bookmarks:
    19
    Hits:
    1953
  8. Tags
    Summary

    The Goddess of Life is dying, and it's up to her daughter and the God of Death to save her before the whole world crumbles to pieces.

    Language:
    English
    Words:
    7,625
    Chapters:
    4/12
    Comments:
    8
    Kudos:
    14
    Bookmarks:
    2
    Hits:
    158
  9. Tags
    Summary

    Frisk freed the monsters from the underground, completing a true-pacifist run. She was living happily on the surface with her monster family.
    Everything was perfect.
    Until it wasn't.
    When Frisk gets hit by a car on her way over to Sans house, everything changes. Not only does Frisk forget herself, her friends, and all of her adventures in the Underground, but something else has changed.
    Frisk glitches the Multiverse.

    Transferred to this site from Wattpad because Wattpad kinda sucks.

    Updated every Saturday!

    Disclaimer: I do not own any of the characters in this story. Undertale belongs to Tobyfox, and all of the AUs belong to their rightful owners.

    Language:
    English
    Words:
    12,110
    Chapters:
    7/30
    Comments:
    15
    Kudos:
    42
    Bookmarks:
    10
    Hits:
    562
  10. Tags
    Summary

    This story isn’t what you think it is, but it’s certainly a weird one.
    When these two women get new famous neighbours living right next door, what do you think will happen?
    Shit hitting the fan. That’s what will happen. You’re getting shit in this godforsaken story.
    (If people actually like this I will write a first chapter for it but enjoy the prologue-)

    Language:
    English
    Words:
    319
    Chapters:
    1/?
    Comments:
    6
    Kudos:
    11
    Bookmarks:
    1
    Hits:
    67
  11. Tags
    Summary

    When her sister ventures into the most dangerous city on earth to solve a missing-person’s case, Frisk fears that she’s been kidnapped. Dropping everything in her hands to follow her, our protagonist ends up tangled in mafia business and dangerous dealings. As she deals with a determined skeleton, one kidnapping turning into so many more, doubtful monsters, a man who speaks lies as his first language, and the threat of mages returning to bring the world to chaos, it's pretty hard to keep her cool.

    Sans is the anchor in her storm, he’s everything she’s ever wanted; he's tall, handsome, confident, mysterious and kind. And although there's the small issue of him being part of a mafia, and to top it off, heir to the strongest mob in the world, Frisk can't help but feel like he's exactly what she needs to get away from the life she desperately hates. She wants to escape the claws of her foster family.

    Set in modern times.

    Language:
    English
    Words:
    90,852
    Chapters:
    23/?
    Comments:
    133
    Kudos:
    258
    Bookmarks:
    35
    Hits:
    3984
  12. Tags
    Summary

    *PLEASE READ TAGS*

    You and your best friend have been through it all,
    literally.

    Ever since you gained the skill to remember things, they’ve been there. You two may have had what others called flaws. You, with a perpetually tired body and them, with ears that couldn’t hear but you’d be damned if you two weren’t there for one another. You two are outcasts and after your grand escape from the local town mob, you plan to venture deep into the mountain, that is if you two survive the bottomless pit fall. Which isn’t too likely.

    Funny how life surprises you.

    Now you two have to venture through a world much too harsh for your soft loving heart.

    Language:
    English
    Words:
    41,899
    Chapters:
    10/?
    Kudos:
    31
    Bookmarks:
    5
    Hits:
    1103
  13. Tags
    Summary

    -I love you-
    -How much do you love me?-
    -Haha… you can’t measure that, silly… but too much-
    -Then… would you give your life for me?-
    -For you? Definitely, no doubt.-
    -Then… then, I will forever be yours. I will always protect you.-
    -Me too…-
    And with that, they sealed their promise... A promise filled with words none of them really understood.

    Language:
    English
    Words:
    107,269
    Chapters:
    20/?
    Comments:
    42
    Kudos:
    70
    Bookmarks:
    5
    Hits:
    1693
  14. Tags
    Summary

    Ria just wanted to to hang out with her friends before tripping into another universe. Meeting someone else whose in the same world as them, but she didn't expect to be in Undertale. Sure she loved the game but its been 7 years since its release date, her friends and her were pretty known in the fandom.

    This person she's with... definitely heroine aura and looks.

    Wait... the skeletons are suppose to be with her?

     

    "God damnit I just wanted to hang out with my friends. Why am I in the situation like those damn fanfictions!"

    Language:
    English
    Words:
    13,912
    Chapters:
    5/?
    Comments:
    26
    Kudos:
    64
    Bookmarks:
    14
    Hits:
    752
  15. Tags
    Summary

    Undertale… the friendly RPG where nobody has to die!
    A cool new video game just came out, and it’s the only thing everyone’s talking about! All young 12- year-old Krista hears about these days is Undertale this, Undertale that… what kind of game is this? She decides to try it out… and she absolutely loves it! But, things start to become wonky ever since she tried out that cool new game.
    Every night it seems her dreams are flashbacks, and the people closest to her are… glitching out? Headaches seem to happen all the time now… what’s going on? It’s like the world she knew is falling apart.

    Or maybe…

    The world she knew was never real…?

    Language:
    English
    Words:
    3,830
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    104
  16. Tags
    Summary

    A compilation of flash fictions following the prompts for Frans week 2020, all set in the same alternate universe.

    Language:
    English
    Words:
    7,265
    Chapters:
    6/8
    Kudos:
    10
    Hits:
    303
  17. Tags
    Summary

    Frisk was a waitress in a small town. But, she had a dream to be an idol since she was a child that continued to grow when some of her favorite idols show up at the cafe. They inspired her to try all she could to make it to the top. Following her heart, Frisk traveled back to her hometown Ebott and finds herself thrown into madness. What makes matters worse, all of her favorite idols start to pop out of the woodworks making her wonder what her life as become.

    Series
    Language:
    English
    Words:
    2,652
    Chapters:
    5/?
    Comments:
    2
    Kudos:
    16
    Bookmarks:
    2
    Hits:
    302
  18. Tags
    Summary

    You, (The Reader), play as my Oc. Enjoy the story!

    __________________________________

    Ever since the monsters came to the surface, you fought for their rights. But, your effort was for naught. Captured by the biggest Anti-Monster foundation, turned into a skeleton monster, and forced to fight innocent monsters, or your family was murdered. And turns out they were killed a whole 3 months ago?
    Yup, that's you.
    And now these four skeletons rescue you and... are surprised when you seem emotionless and souless? Pft... you might not kill yourself for a bit. Heh...

    Language:
    English
    Words:
    36,951
    Chapters:
    41/?
    Comments:
    162
    Kudos:
    288
    Bookmarks:
    53
    Hits:
    4913
  19. Tags
    Summary

    Sans had always loved space.

    Ever since his father had placed a book on astronomy into his eager seven year old hands, he had been enraptured.  He dreamed about making it to the surface to see the stars with his own eyes and show his brother the constellations.

    But losing his father and constant resets by a psychopathic, soulless flower stole his dreams away.

    Until he met a girl with stars in her eyes.

    Language:
    English
    Words:
    1,801
    Chapters:
    1/1
    Collections:
    1
    Comments:
    6
    Kudos:
    83
    Bookmarks:
    12
    Hits:
    686
  20. Tags
    Summary

    After talking to Sans, Frisk feels something she'd never felt before.

    Language:
    English
    Words:
    1,100
    Chapters:
    3/3
    Kudos:
    12
    Hits:
    504

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