1 - 20 of 750 Works in Ecto-Vagina (Undertale)

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  1. Tags
    Summary

    Error's suffering through a bad heat in his anti-void. Lust knows just how to take care of him.

    Language:
    English
    Words:
    2,803
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    39
    Bookmarks:
    2
    Hits:
    332
  2. Tags
    Summary

    Sans is exhausted. He is lonely, hurting, and only two steps away from Falling Down.

    Underfell's first ever Gyftmas is approaching and Red is scrambling. He wants to get his brother the best present ever to celebrate, something that goes across resets with them.

    A visit to Undertale provides him with an idea. It's morally wrong, completely unethical, and likely illegal.

    Luckily for Red, he never really had a moral code.

    MIND THE TAGS.
    This story will get DARK. If anything, literally ANYTHING, looks triggering to you, please don't read this.

    On a brighter note, this is my first time writing smut! Please feel free to give me tips or tell me how I did!

    I also accept ideas for things to happen in the story.

    Language:
    English
    Words:
    8,031
    Chapters:
    3/?
    Comments:
    3
    Kudos:
    8
    Bookmarks:
    6
    Hits:
    153
  3. Tags
    Summary

    Sans tries to help Red kick his nailbiting habit.

    Things get out of hand.

    Language:
    English
    Words:
    3,931
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    24
    Bookmarks:
    7
    Hits:
    251
  4. Tags
    Summary

    Gaster runs some "tests" at his son's expense.

    Language:
    English
    Words:
    8,140
    Chapters:
    1/1
    Comments:
    21
    Kudos:
    39
    Bookmarks:
    4
    Hits:
    573
  5. Tags
    Summary

    Sans knows she has to obey every command her boss gives her. She hates it, but she has no choice.

    Doctor Gaster enjoys exerting her power over her sweet, weak assistant.

    (Lesbian Sanster AU, takes place in a universe similar to Shattered Dreams.)

    Language:
    English
    Words:
    2,898
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    249
  6. Tags
    Summary

    Cross is brought to Nightmare's castle for the first time and sent right onto his first mission before settling in. To make matters worse, he's paired with Killer who thinks the pup knows nothing of fighting. Add in Cross is hiding something, even from Nightmare, how will this mission go? Will he find a place among the other four?

    Language:
    English
    Words:
    34,940
    Chapters:
    10/?
    Comments:
    118
    Kudos:
    256
    Bookmarks:
    54
    Hits:
    3637
  7. Tags
    Summary

    Sebastian is just your regular college student. Except he's not. His best friends are two Monster skeletons. Oh yeah, and Monsters exist and have been on the surface for a few years now.

    Language:
    English
    Words:
    12,613
    Chapters:
    7/?
    Comments:
    6
    Kudos:
    82
    Bookmarks:
    15
    Hits:
    1083
  8. Tags
    Series
    Language:
    English
    Words:
    982
    Chapters:
    1/1
    Kudos:
    39
    Bookmarks:
    3
    Hits:
    398
  9. Tags
    Summary

    Honey was not sure what kind of relationship they had. They were really close friends. It was just that the feelings he harbored for the quick witted and grinning Undertale skeleton monster who went by the name of Sans, were exceeding the range one had for a friend by far. Honey wondered if he was the only one nursing the wish for being more than just being friends.

    And so, every Thursday when they met up, they got one step closer to finally finding out what they really were for each other.

    Join me in this cute little adventure based on the result of some of the drawing dates I have with Kuromaezing (https://twitter.com/KuroMaeZing)
    I hope you enjoy this self-indulgent ship, I am happy to take you along!

    This is my entry for the Rarepair New Year 2023 hosted by Kamari333! Thank you so much for this opportunity!

    Language:
    English
    Words:
    1,759
    Chapters:
    1/3
    Collections:
    1
    Comments:
    6
    Kudos:
    8
    Hits:
    80
  10. Tags
    Summary

    Without saying anything, Error merely did what he's been told and circumvented his way around the other's desk with the motion of someone carrying heavy rocks underneath their feet. Did the temperature suddenly rise or was it the work of his imagination? It must be the increasing beat of his soul, but feeling cold would make more sense though? This is weird… This is really—

     

    … Is that a fucking boner?!

    Language:
    English
    Words:
    9,372
    Chapters:
    1/1
    Comments:
    14
    Kudos:
    103
    Bookmarks:
    17
    Hits:
    926
  11. Tags
    Summary

    Two brothers finally reunited. A royal family with two newborn children. Swapped brothers wishing for a happy ending.

    Three Universes become One.

    King Edge and Hand Red tackle the massive task of uniting their tumultuous Underground. Papyrus and Sans have a long overdue talk while Arial and Tempus slumber nearby. Stretch and Blue slowly put the puzzle of their wishes together.

    Will the promise be realized in five years?

     

    ====================
    Universal Merge: Chapters 1 - ??
    Royal Family: Chapters ?? - ??
    The Promise: Chapters ?? - ??
    ====================

    ---------------------

    Part Three of the KR Trilogy.

    ---------------------
    *Please feel free to write or draw for this story, you don't need my permission for that! Thank you so much for reading this series!

    Series
    Language:
    English
    Words:
    2,551
    Chapters:
    2/51
    Comments:
    78
    Kudos:
    194
    Bookmarks:
    47
    Hits:
    2264
  12. Tags
    Summary

    Shiloh was a succulent bitty, a rare one that had been born and raised in a bitty breeding ring. After he was saved by Starla and Dream, he was given an amazing life. He was lucky. Starla was now married with twins and he was currently getting his own family started with a bitty that came to the manor named Acer. Acer had been through so much, he had escaped from the hands of a Nightmare variant that had used him in a way that still made his bones itch with anxiety. It had been a long road, but they had become close and built trust and Acer had become the love of his life.

    Language:
    English
    Words:
    3,931
    Chapters:
    1/1
    Kudos:
    6
    Hits:
    43
  13. Tags
    Summary

    Vera was an avid believer in the fantastical and magical till an experience in high school causes her to lose faith in magic for years till the appearance of monsters on the surface. Unaware of her abilities she summoned an apple from the tree of negativity and during a night of curiosity becomes corrupted by its power.

    After reawakening to look like a monster Veras life turns upside down till a friendly skeleton monster who often buys her flowers reaches out to become her closest friend. In befriending him she's thrust into a new world of monsters, racism, and the multiverse itself as she comes to find out her soul is trying to tie itself to the god of hopes and dreams.

    Language:
    English
    Words:
    2,864
    Chapters:
    1/?
    Comments:
    3
    Kudos:
    26
    Bookmarks:
    5
    Hits:
    173
  14. Tags
    Summary

    You find yourself out of a job, on the verge of getting kicked out of your apartment because you can't pay the rent and no where to go. Until your newest skeleton friend suggests you move in with them and their cousins until you get back on your feet again. You didn't expect to like living with this many people at once so much though...

    Language:
    English
    Words:
    231,075
    Chapters:
    59/?
    Collections:
    1
    Comments:
    1326
    Kudos:
    2987
    Bookmarks:
    536
    Hits:
    85688
  15. Tags
    Language:
    English
    Words:
    4,092
    Chapters:
    1/1
    Kudos:
    13
    Hits:
    121
  16. Tags
    Summary

    Gaster has trouble trusting people. But he can always rely on himself, and of course on his own magic. It's never reacted badly to the tainted magic in his soul and made him lose control, or anything. So using a ton of magic at once to masturbate where no one is around to help is likely a good idea.

    Language:
    English
    Words:
    1,171
    Chapters:
    1/1
    Kudos:
    7
    Bookmarks:
    1
    Hits:
    68
  17. Tags
    Summary

    Nightmare installed cameras throughout his castle when he first starting bringing home wayward skeletons. Although he can sense them, Nightmare never knew the specifics of what they did and it bothered him. Now, years later, after their relationships have changed and evolved, Nightmare trusts his mates. But, he never bothered to get rid of the cameras. Cross is the only one who doesn’t know about their existence, the other three both know about the cameras, and abuse their knowledge to the fullest. Their favourite pastime? Watching Cross.

    Almost 1300 words of pure smut.

    Language:
    English
    Words:
    1,299
    Chapters:
    1/1
    Comments:
    22
    Kudos:
    206
    Bookmarks:
    31
    Hits:
    1447
  18. Tags
    Summary

    Based on those two "Tradition" comics of Dream and Cross and also centered around the Cream comic.

    Language:
    English
    Words:
    2,806
    Chapters:
    1/1
    Kudos:
    38
    Bookmarks:
    2
    Hits:
    455
  19. Tags
    Summary

    Dream and Cross play a dark game with Killer and Nightmare.

    Language:
    English
    Words:
    6,313
    Chapters:
    1/1
    Comments:
    18
    Kudos:
    198
    Bookmarks:
    25
    Hits:
    1521
  20. Tags
    Language:
    English
    Words:
    194
    Chapters:
    1/?
    Comments:
    21
    Kudos:
    12
    Bookmarks:
    4
    Hits:
    307

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