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  • Dear Demon(Gaster!SansXReader)
    15.9K 521 22

    You woke up, it was monday. You were going to your wardrobe to change your clothes... But there was no wardrobe. You was in a decaying dirty couch, in the middle of nowhere. You forgot that your house was burned to the ground by some human-hating monsters, while your family and friends were there. And you watched them...

    Mature
  • Gasoline (Gaster!Sans x Abnormal!reader)
    2.5K 85 13

    You are an abandoned girl with so many battle scars. The scars you'd received from your dad. The scars you'd received from the society. The scars you'd received from fighting 'him'. ____________________________________ When I listened to this song, I immediately thought of the plot of the story. Therefore, this song g...

  • Bonerable (Gaster!Sans X Reader)
    141K 6.6K 29

    The barrier was lifted, the monsters were free but not accepted; hell broke loose, the wars were resumed. The monsters had no choice but to retaliate to the human's advances. Resources were scarce, the earth seemed unhabitable and the only way to survive was through violence. You lost all hope when you were forced to...

  • Skin and Bones- AU Sans x Reader
    45.1K 1K 10

    Please message me in which Sans goes with (y/n) at the end, the choices at here: •Gaster!Sans •Mob!San •Undertale Sans •Underfell Sans •Underswap Sans (and maybe papyrus if he gets enough votes) This story is a slow one meaning more chapters and doesn't jump into relationships or smooching that quickly..(i believe it...

  • GZ!Tale x Child! Reader
    41.1K 940 7

    This is full of stories if you were a child were in GZ!Tale from crying in Papyrus's arms to hugging Alphys.

  • Yandere Papyrus x Reader - Can't Spell Yandere without U and Me
    5K 92 2

    You've been best friends with Papyrus for years now, but you never thought he liked you in that way. And you never knew how far we would go to get you to love him. Will you love him back?!

  • Au sanses x reader (naj!jock and nerd highschool)
    135K 2.3K 36

    Hi readers this is my second book and i hope you all enjoy reading this ?

  • Love and War and a Zombie Apocalypse (Gaster! Sans x Reader)
    3.9K 112 9

    The monsters were free, most humans accepted them! But then they were some that didn't, when an experiment goes wrong its human's worst nightmare...Zombie Apocalypse

  • History Humor
    2.1M 128K 120

    Jokes of mostly history, because I have to share it.

    Mature
  • A Broken Mirror (Sans X Reader)
    10.5K 312 29

    It's been a year since Frisk left the underground, and with them, left most of the hope the monsters had about going up to the surface. Now, after all that time, a pair of twins have fallen down into the land of monsters. Will. (Y/n) and her brother/sister stay together, or go down different paths? Will they bring...

  • A Skeleton Has No Heart
    29.1K 1.1K 5

    Sans X Reader. You just went through a dungeon, got a goat mom, now you enter a cold snowy forest. What's next?

  • The Angel That Hoped | Undertale | Sans x Reader
    32.2K 1K 7

    W.D. Gaster, the royal scientist for King Asgore. He has done many experiments, most being successful, though some ended in failure. This time, Gaster has been working on an experiment to create living monsters! He has been successful once, creating a beautiful child with wings that he wishes to give to the king. The...

  • Both Brother Love (Sans x reader x Papyrus)
    730 20 2

    !!!WARNING!!! You atleast have to have played the game or be a fan of the game to understand what is ahppening. I have heard legends of monsters living trapped underground and i want to know if its true or not. My mom has been telling me about them a lot and how she was a part of everything. I didnt really belive her...

  • Junkyard Dog and Serious Bones (Gaster!Sans X Female Reader)
    19.7K 828 15

    ((Any OC addition requests are welcome.)) (Y/n)...Known as the Junkyard Dog for her hostile attitude and living situation. Gaster!Sans...Known as Serious Bones for being a serious skeleton...That occasionally says a couple puns. WARNING: Mature Language and some almost lemon-y stuff MAY be included in story COVER ART...

  • Philophobia
    246 16 2

    The Fear of Falling in Love. [SansxReader]

    Mature
  • Anxiety
    496 22 2

    [FEM Reader x Underfell sans] anx·i·e·ty aNGˈzīədē/ noun a feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome.

    Mature
  • Trapped in your strings [Error X Reader]
    3.8K 118 4

    It's like it was only yesterday; you were running away from your parents and found yourself lost in the woods. Soon, you were running away from your nightmare this time. Only to find out he treated you like his pet...no that's not the word...servant? Nope. What about slave? No...a dog then? Clearly cause he made you w...

  • Strong and Submissive (Swapfell!Papyrus x Reader)
    19.5K 331 6

    He was submissive to his brother. No one else had that advantage. He cared for him and would never allow harm to him. When you come, a while new world will open. But will it be accepted or rejected? "Oh come, it isn't all bad." "Spoiled wretch." "Useless piece of trash!" "All mine..." Story may include dark themes. (...

  • Au x Tall! busty! naive! shy! nice! reader
    20.9K 265 6

    you lived in a nice white big house own your own, you liked watering plants and you liked animals too. but you were little naive sometimes Toriel visit you to have tea.

  • My dream came true [ Underfell Sans X Reader ] || COMPLETED
    90.8K 2.2K 33

    Best ranks: #8 in fanfiction; #1 in undertale; #3 in sans; It was all a dream.....or so you thought.. Edgy: bish how dare u say that was a dreem, it was true af, fite me on dis! *lowvoice* and what im batta do is even more true. *inserts lenny face*

    Completed  
  • Gaster OneShots 4
    191K 5.4K 206

    THAT'S RIGHT! #4!!! (No images r mine) DEAL WITH IT!

    Completed  
  • bad to the bone (Undertale sans x reader)
    279K 9.1K 41

    I dont even know what i'm doing. I just love sans and stuff...... fuck my life what even is this Its a "love" story (ew) including frozen spagetti and bad puns i guess and flowers..... maybe idk

  • Fifty Shades of Blue-(Sans Au x reader)
    1.2K 41 3

    "Welcome to the company~ I hope your work here is extraordinary~" ((SLOW UPDATES)) The monsters had just been set free 3 years ago, Most of them leading nice lives even very successful ones including the new CEO of the Undertale Inc. Sans the Skeleton You were just a simple intern working with this short monster but...

    Mature
  • I Fell for a human -_Underfell!Sans X Reader_- (lemon)
    59.7K 918 20

    (SLOW UPDATES AND UNDER EDIT) You are a young adult, around the age of 19. You don't really have a gender but can be called he/she or they You were living with an awesome family when your father turned insane and killed your mom, brother, and two sisters while they were sleeping. You on the other hand were wide awake...

    Mature
  • LOVE Madness (DT!Sans x Reader)
    48.9K 1.6K 13

    Deep underground, a child is on their way to a genocide route. Sans comes to a conclusion where he needs more LOVE in order to defeat Chara. He becomes corrupted and slaughters every monster in the Underground. How will you save him now? (This art belongs to it's rightful owner)

    Completed   Mature
  • Start again (Naj!au!Sans x Neko! Reader) ((Finished))
    190K 4.6K 145

    (Y/N) is a neko who lives with her cat Ayumu. (Meaning:Walk dream, vision) She lives in her cozy home with two bathrooms, a bed room, a living room and a kitchen. (Y/N) is transfering to a new highschool called Au!High because of an incident. Her old school got burned down to the ground. She is a very clever girl and...

    Completed  
  • Sans Answers
    788 55 1

    Your friend has been telling you about this cool web site where you ask them questions and they answer. She said it was SansAnswers.com You weren't interested in it... since you knew it was probably just some prank site. Not very interesting at all... Until... Rumors started to spread... That they were calling for you...

    Mature
  • NaJ! PJ x Wolf! Reader
    52.3K 1.4K 11

    You are a she-wolf with a strong voice and a stronger spirit. Let's put it this way, if anyone messed with your sister or even spoke one word behind her back... they minus well be dead. You and your younger sister Abigail moved into the neighborhood with your depressed mom as high school started. Abigail was starting...

    Completed   Mature