1 - 20 of 131 Works in Yandere Sans (Undertale)

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  1. Tags
    Summary

    Sans is in heat
    Sans sees his SOULmate while he's in heat
    Sans notices that his SOULmate, you, is ovulating
    Sans takes this as an invitation to fuck you

    But lucky for you, Sans doesn't know how to work overalls so he settles for dry-humping you against a wall. While doing so he accidently on purpose marked you and can now find you no matter where you go.

    Since monsters came up to the surface, they've been nothing but sweet and kind-hearted. Their story of starvation has made many sympathetic towards them. No one would believe you if you told them, and you'd be labeled as a monster hater. Now you have to deal with Sans all by yourself.

    After threatening to kidnap you and lock you up in his basement, you "agree" to meet him once a week. You're just desperately looking for a way out of this

    Language:
    English
    Words:
    1,869
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    29
    Bookmarks:
    6
    Hits:
    249
  2. Tags
    Summary

    A girl gets unwillingly involved with a yandere blueberry. But he'll get bored of her eventually, right? As long as he never learns that she knows about the rotten core under the candy coating.

    Language:
    English
    Words:
    13,422
    Chapters:
    2/2
    Comments:
    29
    Kudos:
    110
    Bookmarks:
    19
    Hits:
    1366
  3. Tags
    Summary

    In the monster world, it has always been known that monsters would go to great lengths to be with their soulmate. It would turn into an obsession, a desperate infatuation.

    To be rejected by your soulmate… it could make a monster go crazy.

    Horrortale-based AU where monsters live on the surface.

    One Sided Horrortale!Sans/Adult Human Female Reader. All characters are 18+.

    Contains stalking, abduction, obsession, violence and rape/non con themes. Please read warnings/tags. Updates weekly (Tuesday or Wednesday).

    Language:
    English
    Words:
    25,502
    Chapters:
    5/?
    Comments:
    36
    Kudos:
    183
    Bookmarks:
    28
    Hits:
    2201
  4. Tags
    Summary

    You never would have guessed that a random act of kindness on your part would kick start a skeleton's obsessive tendencies. If you had known it'd get you kidnapped, you would have run away screaming - soulmate or not.

    Yet here you are. After all: "no good deed goes unpunished".

     

    [Thought I'd try out some drabbles to get me back into the swing of posting while I work on completing "Déjà Brew" and "The Red Thread of Fate"! Each chapter will have 10 drabbles and each drabble should have about 100 words, though it varies depending on what program it's pasted in ಠ_ಠ]

    Series
    Language:
    English
    Words:
    8,000
    Chapters:
    8/?
    Comments:
    88
    Kudos:
    214
    Bookmarks:
    32
    Hits:
    2650
  5. Tags
    Summary

    The Sanses all arrive at a mysterious mansion in the middle of the night after getting an invitation from Core Frisk.
    Once inside they realise that it was a trapped in there with Core until whenever the hell this whole thing ends. Which means they have to try not to strangle each other.

    (Angsty and evil (specially evil) questions and dares are allowed since I love those :3)

    Series
    Language:
    English
    Words:
    35,858
    Chapters:
    47/?
    Comments:
    573
    Kudos:
    121
    Bookmarks:
    11
    Hits:
    2103
  6. Tags
    Summary

    All you had wanted to do was explore the empty Undergrounds a few months after monsters emerged. And where had that gotten you? Kidnapped and locked in some psycho skeleton's basement.

    Luckily for you, you're "rescued" by other skeletons. Who all more or less look the same. Except you still can't go home, because you know about too much of something you're not suppose to know anything about.

    So now you're stuck in the Undergrounds with a creepy murderous looking Axe, a perverted Red who can't keep his hands to himself, a loud and obnoxious brat named Blackberry, a dog like Pup that won't control his instincts, and a carefree Sans.

    At least Blueberry is normal.... r-right?

    Language:
    English
    Words:
    28,023
    Chapters:
    17/?
    Comments:
    256
    Kudos:
    582
    Bookmarks:
    86
    Hits:
    6492
  7. Tags
    Summary

    Destiny can twist hearts,futures,and it can also twist you.

    Destiny cannot be changed,but it can change you.

    Destiny has two paths.One is good,and one is bad.Simple,really.

    But,why does your destiny pushed you towards this!?

    You're lonely.You're desperate.You're helpless.

    If only you could have...If you can have this...All you need is–wait...what did you need?

    ***

    Hungry...he was so hungry...

    No food,no water,no anything.

    He had nothing.

    No one.

    Not even a single soul to comfort him.

    If only he could...Maybe he can...He just needed–wait...what does he need?

    ***

     

    Follow Sans and Reader on finding out what they really need,where and how can they find it,and if there really is something that they need...or was it really just right in front of them?And how can they answer all these questions?Through romance,obviously!Not to mention a bloody one!'Cause who doesn't want some tasty falling in love with a side of chaos!What could possibly go wrong?

    Says every dead man before they died.

    Hope ya'll enjoy it I guess.Updates 1-2 times a month.

    Language:
    English
    Words:
    419
    Chapters:
    1/?
    Kudos:
    10
    Bookmarks:
    7
    Hits:
    123
  8. Tags
    Summary

    Everything is not what it seems

    Everyone is not what they seem.

    Red didn't believe that. He believed that everyone can be predicted...

    But, not you... Why, though? What makes you so special?....

    "Wanna find out? "
    -------------------

    Lets go on our journey with Red(our goofy, hot, awkward, sweaty and quite possesive skeleton) and reader(our cute, smart, awkward, shy and blush-filled human) to find out what hides beneath their souls!

    Updates atleast 1-3 times a month.(may change)

    Language:
    English
    Words:
    7,123
    Chapters:
    5/?
    Comments:
    16
    Kudos:
    51
    Bookmarks:
    16
    Hits:
    763
  9. Tags
    Summary

    You are (Y/N), a goddess? An entity? You really don't know what's the real word to describe yourself. You can control pretty much everything anywhere. Your 'home' is a truly ethereal place where you are the ruler, the almighty.

    Yet... You didn't really have anyone to be friends. Sure there were your creations with free will to do anything they wanted and true emotions but they were still your creations.

    So what will happen when someone who you didn't create stumbles upon you? Why do you feel dread?

    But... as long as they don't look into your eyes, everything should be alright, right?

    Wait...

    Fuck they saw your eyes, didn't they?

    Language:
    English
    Words:
    14,430
    Chapters:
    4/?
    Comments:
    38
    Kudos:
    155
    Bookmarks:
    29
    Hits:
    1624
  10. Tags
    Summary

    There is no easy way to put this.

    You had problems.

    A LOT of problems.

    And that's ok.

    And do you know who is going to fix those problems?

    Why Sans of course!

    Language:
    English
    Words:
    25,945
    Chapters:
    18/?
    Comments:
    251
    Kudos:
    461
    Bookmarks:
    78
    Hits:
    6155
  11. Tags
    Summary

    (Y/n), a high ranking Platoon Commander in the Military, was on a mission with her squad when her plane was shot down by an enemy ship, leaving her stranded on an unknown island, with none of her comrades in sight.

    It would have been all fine an' dandy... if she wasn't surrounded by three Alpha Skeletons and one Omega Skeleton. All of which want to fuck or be fucked by her.

    So now here she is, having to assess her dominance as an “Alpha” to get by with her limbs still attached and her clothes still in one piece. Even if one of them looks like he came straight from Satan's asshole.

    Language:
    English
    Words:
    48,118
    Chapters:
    18/?
    Comments:
    557
    Kudos:
    1753
    Bookmarks:
    230
    Hits:
    22472
  12. Tags
    Summary

    Sans hates humans. He couldn't care about them less, if they weren't such a nuisance to him. To him, the only good human, is a dead human.
    And yet...
    Here he was watching and watching, waiting for that one human to come out from the land and step to the shore.
    And when she does...
    ... Sans has to hold himself back from taking you.

    But he will.
    And no one will be there to stop him from getting you.
    ...
    Someone notices.

    Language:
    English
    Words:
    27,991
    Chapters:
    5/?
    Comments:
    157
    Kudos:
    508
    Bookmarks:
    96
    Hits:
    4785
  13. Tags
    Summary

    Sans has tried to be patient... but he can’t wait as long as it takes.... he n e e d s her.... even if she says she hates him... he... he know.. hehe.. they were meant to be... she’ll come around eventually...

     

    (WARNING: THIS IS COMPLETELY NON-CON!)

    Language:
    English
    Words:
    5,589
    Chapters:
    1/1
    Comments:
    9
    Kudos:
    64
    Bookmarks:
    6
    Hits:
    1498
  14. Tags
    Summary

    It couldn’t be more cliche- you bumped into him while running to class. Of course it would start like that.

    ~

    Finished.

    Language:
    English
    Words:
    73,180
    Chapters:
    34/34
    Comments:
    958
    Kudos:
    1441
    Bookmarks:
    153
    Hits:
    23894
  15. Tags
    Summary

    After years of dealing with the loss of his brother, someday, by some miracle, he met him again. ...Only to face the fact that this Papyrus is not his, it is the brother of another timeline of himself. What is worse is that this Papyrus is hurting, and there's nothing that Blue can do but watch.

    He have never felt so hopeless in his life.

    -
    in short, cinnamonroll!blue met yandere!blue, and things are A-ok dontworryabtit.

    Language:
    English
    Words:
    8,211
    Chapters:
    2/?
    Comments:
    3
    Kudos:
    13
    Bookmarks:
    2
    Hits:
    123
  16. Tags
    Summary

    Marianne had gone through a lot of bad things in her life and even after death. The last thing she ever wanted was to become an assistant to a maniac who destroys universes just for nothing.

    Without any choice but to help her new boss (Otherwise her own universe would be destroyed with her being included) she began traveling through the multiverse, taking up many roles.

    The last thing that she wanted was to encounter crazy people in those universes, but if she learned something from previous experience, what she wants is exactly what she isn't going to get.

    Now stuck in this job where every universe she goes to gets worse and worse, she begins missing her original universe, trying to find a way back to her home and break her universe free from the horrible clutches of the destroyer.

    Series
    Language:
    English
    Words:
    17,459
    Chapters:
    3/?
    Comments:
    16
    Kudos:
    20
    Bookmarks:
    4
    Hits:
    289
  17. Tags
    Summary

    "Protect humans and keep them safe from harm, no matter the cost."
    Sans had made a promise, and he was prepared to go to any lengths in order to keep it.

    The short skeleton refuses to let you go because you'd only find danger outside the Snowdin village. He loathed himself for poisoning your drink in order to make you weak and sick so that you can't leave the safety of the town. It was a horrible thing to do, but this way you would stay with him and Papyrus.

    He'd keep you safe and happy.

    Language:
    English
    Words:
    93,439
    Chapters:
    18/18
    Comments:
    472
    Kudos:
    1378
    Bookmarks:
    160
    Hits:
    34034
  18. Tags
    Summary

    I dunno man this is an i-wrote-this-while-tipsy reader-inserty thing with yandere sans
    Cause im trash and my friends said to do it and who am I to say no?
    also keep in mind i typed it and never read it over to check for errors soooo rip lol
    FANFIC START!!!

    Language:
    English
    Words:
    616
    Chapters:
    1/1
    Comments:
    10
    Kudos:
    29
    Bookmarks:
    3
    Hits:
    204
  19. Tags
    Summary

    sans is in heat. you didnt know

    Language:
    English
    Words:
    2,377
    Chapters:
    7/?
    Collections:
    1
    Comments:
    16
    Kudos:
    118
    Bookmarks:
    10
    Hits:
    3961
  20. Tags
    Summary

    Sans had always wanted to meet his soulmate. Especially seeing how his parents, two non-soulmate couple, always seemed so depressed and unhappy. It never helped that when he did see soulmate couples, their happiness could light the whole room. It made him envious of children with those parents.

    Later in life, it made him envious of said couples.

    Sans wanted that happiness in his life. He wanted someone for him that made him happier than anyone else could. He longed for it more than he longed to be part of the Royal Guard. And Sans was more than determined to become part of the royal guard! Sans wanted his soulmate so much. He would do anything to have his soulmate.

    They didn't have a choice.

    Language:
    English
    Words:
    871
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    31
    Bookmarks:
    2
    Hits:
    313

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