outerconstellation



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  1. Public Bookmark 4

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    Summary

    Self indulgent smutfic because I have season 3 Adamaï brainrot and for some reason there arnt any x reader fics for him

    Language:
    English
    Words:
    815
    Chapters:
    1/1
    Kudos:
    99
    Bookmarks:
    4
    Hits:
    1,721

    26 Nov 2025

  2. Public Bookmark *

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    Summary

    The barrier of underfell is broken. It's been a month, and monsters are finally allowed to move into the city. You're staying in a small cheap apartment waiting for your newest property to finish, when you get a rude noisy neighbor. Does he really have to play his music so loudly. It's not even good music. You're sick of this. You're not listening to him stomping around, yelling or… playing video games. Oh wait, you know that video game . Time to put special plan "get back at your jerk neighbor" into action. Just because your a vampire and stay up all night, doesn't mean he can be a jerk.

    A story about developing friendship, good laughs, and teaching Sans the meaning of friendship and love, when all he's known is the horrible world of Underfell.

    Series
    Language:
    English
    Words:
    279,273
    Chapters:
    56/?
    Comments:
    5,541
    Kudos:
    9,925
    Bookmarks:
    1,364
    Hits:
    236,558

    18 Nov 2025

  3. Public Bookmark *

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    Summary

    Soulmates have always existed.

    Every sentient being has a soulmate mark, hidden from sight until their first moment of physical contact with their soulmate. Unfortunately, matches have been relatively rare for many centuries. Turns out there's a reason for that, and when the monsters come out from under the mountain, everyone finds out why.

    It's because a massive amount of soulmates were stuck in the Underground.

    Everyone says that soulmates are a wonderful gift from the universe, a lovely person meant for you and you alone. And while that's mostly true, it doesn't necessarily mean that your relationship will run smoother than anyone else's. It just means that you know you can make it work together.

    You meet your soulmate a few years after monsters emerge, and you know even before your first touch that you're in for a punny time!

    Series
    Language:
    English
    Words:
    21,750
    Chapters:
    9/?
    Comments:
    128
    Kudos:
    587
    Bookmarks:
    107
    Hits:
    8,408

    17 Nov 2025

  4. Public Bookmark 59

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    Summary

    A perverted love child between Undertale and Overlord consummated with boredom and edgy hormones.

    Osoma, a game that you had developed alongside your fellow developers, is scheduled to shut down and have all of its servers wiped today. Saddened to see your friends leave and to have something you have worked hard on end you decide to use the last few minutes of your time making a set of devilishly handsome Undertale NPC characters. When you were done you accepted what you had made and decided to stay in till the timer hit zero. Unfortunately, even though you were done with the game the game itself did not seem done with you. Now trapped and surrounded by your new creations giving you all sorts of devious ideas you need to decide what to do. Do you go along with what they say and take over the new lands that popped up around the original land of Osoma itself, find a way to get back to your own reality, or allow the first high level monster to kill you?

    Language:
    English
    Words:
    53,997
    Chapters:
    7/?
    Comments:
    59
    Kudos:
    221
    Bookmarks:
    59
    Hits:
    5,193

    17 Nov 2025

  5. Public Bookmark 15

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    Summary

    [Underswap Papyrus x reader]

    You have a secret. You are the last of your kind, shapeshifter / Human hybrid. The very culmination of your being constantly pleads for you to be honest about who you are, but your kinds law prevents you from doing so. Will you be honest and open about your powers with your new friends, or will you continue to lie and hide in the dark?

    (Yes the title is a pun, if you aren't aware bonafide means honest/ trustworthy, yes the title contradicts itself it's supposed to show the struggle between logic and emotion.)

    Once I’ve posted the 12 chapters I already have it will be slow updates.

    Language:
    English
    Words:
    21,090
    Chapters:
    7/7
    Comments:
    11
    Kudos:
    129
    Bookmarks:
    15
    Hits:
    1,911

    16 Nov 2025