Underswapsans Stories

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245 Stories

  • Reborn as Dream Sans [Undertale Multiverse] by DeadEnDead
    DeadEnDead
    • WpView
      Reads 67,681
    • WpPart
      Parts 59
    Reborn as the guardian of positivity, you find yourself in a strange new world, uncertain of what it may hold. Navigating it isn't easy with gods like Nightmare and Error trying to strike you down every step of the way. But unlike the previous Dream, you have nothing to lose, and are determined to forge a better path than the soul whom you have replaced.
  • Tainted Ink [Undertale MV story] by DeadEnDead
    DeadEnDead
    • WpView
      Reads 1,411
    • WpPart
      Parts 12
    Pastel, a gentle Ink variant who was possessed for centuries, finally manages to regain control. But their magic is still tainted, and the multiverse isn't as safe as it once was. They'll need help from Blue and Dream to adjust.
  • A Miscalculation In Space by Readern111
    Readern111
    • WpView
      Reads 18,018
    • WpPart
      Parts 19
    He knows he'll be dooming them if he falls, but he's tired, his body is breaking apart, held together on a higher being's whim only. He wonders if there'll be another to replace him. He wonders if there will be none. It's rather silly, really, since he won't even be around to witness that. The crowd, the rage and bloodthirst palpable in the air will ensure that. If he does not fall on his own, others will force him to. Or, in other words, the typical start of Error being forced to jump into the Void one way or another, in this case into the NaJ universe! The cover art belongs to irodimmatcha on deviantart(will take down if the artist asks me to)! Updates will be highly inconsistent.
  • ask/dare Blueberry Sans by EddsworldFan321
    EddsworldFan321
    • WpView
      Reads 201
    • WpPart
      Parts 9
    hee hee, ask/dare the Blueberry anything
  • 🖤~Forbidden Love~💜 by itsUWOhate
    itsUWOhate
    • WpView
      Reads 132
    • WpPart
      Parts 3
    This is a somewhat Canon and Fanon Fan Written book, Yes Fresh isn't able to feel in this book and yes Error is the biggest asshole sometimes too but.. I decided why not make them sweet once in a while? Why not make Fresh the biggest manipulative Actor on the Planet? And I'll say it now if this book gets enough reads I'll make a second one but ima add more characters. Anyways thanks for reading and yes lemon will be in it if you guys want there to be some LeMoN just Tell Mah but there will be Smooches and parts where there will be some..-3- Parts that are close to da lemons U//v//U And yes if you look at the chapter Titles, I love puns qmq Anyways enjoy the book!! XD
  • Sanscest One-Shots  by InkyIsBest
    InkyIsBest
    • WpView
      Reads 368
    • WpPart
      Parts 2
    No lemons- just angst and fluff :> pls- any ship is alright as long as it's not uh- weird-
  • The BONE ZONE - sanscest/fontcest story book by UndertailFanfics
    UndertailFanfics
    • WpView
      Reads 24,732
    • WpPart
      Parts 7
    The bone zone.
  • °~-The Creator's Daughter-~° by FandomFanTrash
    FandomFanTrash
    • WpView
      Reads 102
    • WpPart
      Parts 1
    Y/n was not technically BORN a true monster. She could be considered Frankenstein's Monster. And the Frankenstein to her monster, is her loving father, Ink Sans. He had been sitting alone in the Doodlesphere when an idea popped into his head. 'Maybe I don't have to be lonely,' He thought. A burst of energy swept through him, followed by the will to create a child. Someone for him to love, and cherish. Someone to come home to. Someone to live for. A daughter.
  • Canvas Beauty (UT Multiversal Ships) by Authirst
    Authirst
    • WpView
      Reads 483
    • WpPart
      Parts 3
    Ships; - Errorink/Errink (Error x Ink) - Dustberry (Dust x Blueberry/Swap) - Kreme (Killer x Dream) - Crossmare (Nightmare x Cross) - HorrorLust (Horror x Lust) Trigger warnings; - Self-harm - Eating disorders - Violence - Sexual scenes - Strong language - Mentions and suggestions of rape After ending their fake relationship, Ink and Dream's friendship is tense and unhealthy. It doesn't help that the Multiverse disapproves of their breakup, and Nightmare has grown stronger thanks to the negativity that stemmed from the event. However, things start to turn around after Ink and Error's 'friendship' takes a turn for the better as they realise their feelings for each other. But, what about the others? Will they eventually get together, or will their conflicting personalities collide with each other and make it impossible for them to get closer?
  • SANS UNDERTALE X SHREK by tomatoes84
    tomatoes84
    • WpView
      Reads 267
    • WpPart
      Parts 2
    sans unertale x shrek fall in love!
  • AU Sanses and Papyruses x Reader HIGHSCHOOL **DISCONTINUED** by Torigoat
    Torigoat
    • WpView
      Reads 262
    • WpPart
      Parts 3
    Haha yeet this is my first Wattpad book, so I'll do the best I can to make it good :) . This book is for the people who want some love and skelebooty in their everyday life, so if that's you, why don't you come on in ',:)?
  • Hold my Hand and Remind me I'm Real by Crookedwingedangle
    Crookedwingedangle
    • WpView
      Reads 49
    • WpPart
      Parts 5
    The idol group Blushing bones is super famous and somehow miraculously you ended up dating one of the idols. At least it feels miraculous at first, but the longer you're with Blue, the more it feels like something is wrong.
  • Underverse : The New Life by Tattletail3251
    Tattletail3251
    • WpView
      Reads 11
    • WpPart
      Parts 2
    After Cross and Chara had been defeated Sans, Sapph, Ink, Dream, Fell, Blue, Honey, Sapphie, Chara, and Trix left to tend to there normal AUS. But when Ink gets a call from an unknown friend. Will the Underverse AU help the AUS in need? Or will they leave them be and let them handle it on their own?
  • Inkwhumptobertale 2025 by Clichely
    Clichely
    • WpView
      Reads 372
    • WpPart
      Parts 32
    We're back with another year of Inkwhumptobertale! And this year, we have another twist: another list! That's right: every day, I'll be facing the challenge of eight different unrelated prompts, and I'll have to do my best to cram them all into the story, somehow. Admittedly, there is a low chance of me actually doing that, but I am obligated to use at least three prompts each day, and I'll add more if possible. I'd like to do at least one day fitting all eight prompts into the story at some point in the month, though. So..prepare for chaos! These characters are not mine!
  • Ask and Dare Dullahan Lustberry by JinxieShy
    JinxieShy
    • WpView
      Reads 85
    • WpPart
      Parts 6
    Ask or dare the lovely couple.
  • Dustberry|Complicated love by lisamarie200
    lisamarie200
    • WpView
      Reads 81
    • WpPart
      Parts 1
    This actually came to my mind lol so I'm not sure if it's any good but eh- Blueberry wakes up one day and he hears a voice asking him to go outside and explore the portal that has opened up he heads outside to discover the portal being the curious bean he was he goes through the portal only to discover that there is a sans exactly like him but he's killing off innocent monsters. Blue tries to turn back before it's too late but the portal closes and blue is left all alone with a killer. The two begin to bond overtime dust constantly flirts with blue at times and he starts to get a bit possessive at times blue on the otherhand doesn't know how to react due to dust constantly flirting with him but as time goes on he starts developing feelings for dust but it's not the kind of puppy love you'd expect it's something much more than that it's the type of love they'd call lovesick. (There's lemon in this story if you don't like it then don't read it)
  •   ᴛɪʀᴇᴅ | ᴀ sʜᴀᴛᴛᴇʀᴇᴅ ᴅʀᴇᴀᴍ  ғᴀɴғɪᴄ by -nothingspecialhere-
    -nothingspecialhere-
    • WpView
      Reads 17,595
    • WpPart
      Parts 7
    Ever since dream ate the black Apple and got corrupted things started to get harded on him then before The remaining members of the star sanses just won't leave him alone and nightmare still seems to despise him he's starting to regret eating the black apple he's..tired can't things go back to how they were? Even if things still weren't that good even then at least he had someone to go to for comfort. But now thing's are different things can't go back to normal He's just very tired.. [Cover of art doesn't belong to me] < slow updates < all characters belong to there rightful owners [_credits__] Dream and nightmare- Jokublog Shattered dream- Drawingerror Sans- toby fox Swap sans- POpcornPr1nce (original owner) / au community Dust/murder sans- Calvateyla Ink sans - Comyet/Myebi Error sans - lover of piggies/crayon queen Horror sans- sour-apples-studios Killer sans- Rahafwabas [More might be added)
  • Adorably Creative (Undertale FanFiction) by Failsona
    Failsona
    • WpView
      Reads 272
    • WpPart
      Parts 1
    As usual, Sans comes back from training, happy and excited, except this time, he arrives home 'marked'. Papyrus is not pleased, until he finds the creative little secret his brother was trying to hide~ Set in Underswap Universe.
  • Killer Rarepairs by TexyLexyStar
    TexyLexyStar
    • WpView
      Reads 47
    • WpPart
      Parts 1
    i love gay people, i just got back into undertale, im too ashamed to put this on ao3, SO! HELLO EVERYONE, YOU CAN REQUEST RAREPAIRS FEATURING KILLER SANS HERE. yes. killer sans. by rahafwabas. WHAT DO I SAY.
  • What's so funny about HoPe, MERCY and the Pacifist way? by lisetta888
    lisetta888
    • WpView
      Reads 688
    • WpPart
      Parts 1
    The right thing to do: everyone has their definition of right and wrong. Should you always follow your morals? Or is sometimes the right thing to do to abandon them, to sacrifice them for the sake of everyone else's safety? Error, Nightmare and the Gang know no MERCY. No matter how many times they're defeated, they never stop hurting people. Will the Stars keep following their morals? Or have HoPe, MERCY and the Pacifist way become obsolete?