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  • The First Human [X Sans] {COMPLETE}
    104K 3.2K 39

    Imagine Undertale, but Chara never showed up. Chara wasn't the first human in the Underground. What if a glitch occurred, and you fell down instead? You fell into the Underground, but you cant remember your previous life. Now, you are surrounded by strange monsters, who have also never seen a human before. Will they l...

    Completed  
  • (Sans x Reader) When Two Souls Meet
    941K 27.1K 28

    Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that...

    Completed  
  • When Two Fates Intertwine (Sans x Reader)
    90.4K 2.5K 12

    [THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.] Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a co...

    Mature
  • Fated (Sans x Reader)
    50.9K 2.2K 20

    PLEASE READ BEFORE GETTING INTO THE STORY: In a story of Undertale where Monsters are bound to the laws of having a Soul Mate, (Y/n) doesn't understand her own role in this world of deceit and cruelty... not until she meets a certain skeleton. While she is best friends with Frisk, the two trust each other at all times...

    Mature
  • Into The Game >> (Sans X Reader) Undertale FanFiction
    223K 8.9K 23

    It was just a normal Saturday. (Y/N) was playing Undertale for the millionth time. She was obsessed. (Y/N) had played all of the routes. True Pacifist, No Mercy/Genocide, Neutral. She experimented with killing certain characters doing different things. Then, as (Y/N) started a new game, she felt a falling sensation...

    Completed   Mature
  • Redamancy [Sans X Reader]
    5K 200 20

    * redamancy A love returned in full; an act of loving the one who loves you. * Kindness. Would never harm a single Soul. Never point a knife at any monster or human. No malicious intentions. Such a sweet little thing ~ * Once upon a time, in an effort to show the monster's also show the Kindness humans can. The s...

  • The Skeleton's Grin (Sans x reader)
    4.3K 120 19

    It's been 5 years since monsters emerged from Mt. Ebott. They integrated into society rather quickly, but they still have people who disagree against the Governments decision to give them rights. Personally, you think monsters have better morals and attitudes than humans do. And who new that all you had to do to gain...

  • My Knight In Shining Bones (Sans x Reader)
    43K 1.2K 14

    What instead of having a son, Toriel and Asgore had a daughter? A daughter who never died? A daughter named (y/n). Monsters have been locked in the underground for many years now, and their only hope is to collect seven human souls to break the barrier. With six souls in their collection, they're so close to breakin...

    Completed  
  • On Days Like These ❀ Undertale /On Break/
    65K 2.7K 28

    You have a routine; jog, relax, and work. It may seem mundane to most, but for you it's comfortable, easy. It keeps you in your bubble. And you wouldn't change anything about it. That is, until two skeletons move in next door, and you discover that their lifestyle is a less than conventional one, but one you're going...

  • The Only One Like Me (Sans X Reader)
    33.5K 962 17

    Not everyone is special enough to know exactly where the Underground's secret entrance is. Not everyone is so special as to accidentally fall into it, either. Of course, that is what the Reader did. They meet the whole gang, and one skeleton in particular stands out from the rest, simply because he's the only one like...

    Completed  
  • You're My Sunshine (Sans x Reader)
    12.4K 325 21

    You find yourself at Grillby's thinking about a certain friend of yours. Of course, by an either amazing or cruel twist of fate, you get stuck having an overnight stay at Sans and Papyrus' house. While you're there, you happen to meet up with that comical friend of yours who thinks it's a good idea to hang out with yo...

    Completed  
  • Events (Sans x Female Reader)
    246K 9.6K 88

    This fanfiction is for a competition me and @AlphyneLoveChild or Wobbly decided to do. She wrote a Muffet x Reader, check it outtttt! c: OKAY I THINK I NEED A REAL DESCRIPTION FOR THIS NOW. ~~~ "Hey, (Y/N)!" Your friend Jeremy screamed. "Oh god. What is it, Jeremy?" You sighed. "Look at this! The hole in the legend!"...

  • Write A Note (Sans x Female!Reader)
    81.6K 3.8K 42

    It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N is a 22 year old girl that lives a pretty simple life. Sleep, eat, work, relax at her daily cafe, go home, sleep. Then the routine starts again. Howe...

    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

  • At the Surface (Sans X Reader)
    503K 20.5K 62

    The monsters have finally made it to the surface and have been legalized to roam the surface as they please. The first couple of months have been spent as a paradise where humans and monsters have lived in peace and happiness. But as we all know, humans tend to be afraid of what they don't understand and the appearanc...

    Completed  
  • A Little Bonely (Sans X Reader)
    343K 8.5K 51

    Monsters always fasinated you. Ever since Frisk broke the barrier and freed the monsters, humanity didnt take it too well but they are slowly getting used to it. Slowly. Very...slowly. (btw Chara is depicted as a female in this story, and so is frisk. Dun be triggy) HEY ALL! This is my first fanfiction EVER! so dont j...

  • Unexpected Love | Sans x Reader
    321K 9.7K 35

    You climbed the famous Mt. Ebott to prove to a group of your friends that humans don't disappear when they go up the mountain. While walking around the peak, you trip over a root in the ground and fall forward, expecting to hit the ground. Instead, you were met with open air. As you fell down the large hole, you let o...

    Completed  
  • In the Woods (Sans x Reader)
    79.5K 2.7K 25

    This is my first story. Its a Sans x Reader...basically its gonna take place after the true ending. You aren't Frisk or anything, just you. Humanity is actually happy to have monsters back. So yeah. Enjoy.

    Completed  
  • Soul Mates (Sans x reader)
    214K 5.4K 30

    Uh

    Completed  
  • No, I love her. (sans x protagonist ) COMPLETE!!
    2.4K 59 33

    Stuck in between wrong and right who will you choose? The man that stole your heart or the man who claims he'll jump off a cliff for you. All you want to do is be happy but what if that means some will suffer? Paige has a long journey and she's more than determined to finish. So this is my first story and I love Under...

    Completed  
  • The Shattered Soul ( Sans X Reader )
    119K 4.4K 62

    " You have a fragile soul babe. Let me be the one to protect it " Monsters have been freed for a while now and everyone is beginning to adjust. However, some are still weary to the newcomers and find them intolerable. In a new world full of confusion, fear and debate, is anyone ready for the first Human/Monster relat...

  • Underrising Love (Sans X Reader)
    101K 2.7K 32

    Monsters have returned! (Y/N) is waisting no time to find out more! After running into a hyper skeleton twice you slowly start meeting and growing attached to a new group of monster friends. One however is more likeable then you thought. (This is Sans x Female reader)

    Completed  
  • wrong number | sans .
    31.9K 2K 16

    While working on the machine, Sans receives a text message from an unsaved number. It first starts out on one slow night that quickly evolves into eagerly waiting for a message from this unknown person. Sans is cautious but he can't help but feel drawn to this one person - despite that he never had met them before.

    Mature
  • Two Angels Reunited (Sans x Reader)
    4.3K 171 34

    You are a girl living near Mt Ebbot. You have a great family and some friends. One day the barrier was broken and the monsters are free. Your family decided to move houses but you loved it here. The flowers and the nice atmosphere suits the weather so you decided to escape your family and stay here. the monsters are l...

    Completed  
  • ||Is this real?!||Undertale sans x Reader [Under-Editing]
    8.8K 507 35

    Y/n L/n, A 20 year old girl who always play games, mostly the undertale one. She's an introvert person and works at a convenience store as her part time job. She has a dark past that she don't want to share, she never had any friends either. As An undertale fan, she wished to be on the game and explore it but.......Wh...

    Mature
  • My One and Bonely (Sans x Reader)
    622K 20K 36

    My first story. It's a sans x reader fic, so don't judge too harshly. Also I have some bad pacing issues, but I hope yall will ignore them. Anyways on with the summary! You see monsters everywhere. All of theme unique and friendly. You ask "how could anyone hate them?" When you save one of them, you're life takes a dr...

    Completed  
  • You Look Like A Million Bucks (Sans x Reader) [COMPLETED]
    41.8K 1.5K 12

    (Y/N) is an eighteen year old millionaire, she lives in a beautiful mansion and has more money than she knows what to do with. It seems like she has everything a person could ever want, but...she doesn't have her parents. She lives in isolation, she hasn't trusted a single soul ever since her parents were murdered...

    Completed  
  • Lost in Despair (Lonely!Sans x Mute!Reader)
    431K 21.6K 49

    Press your fingers together, zip your lips shut, and throw away the key. Once it's time to be free, go fetch that golden key and speak. Unless someone stole your golden key and threw it in the depths of the Black Sea; your nightmares and worst fears. ---- "Even if it kills me a second time." ---- The series- First...

    Completed   Mature
  • Between You and Me (Sans X Female Reader) [UNDER EDITING]
    4.5K 194 32

    You are a third grade student teacher at Mount Ebott Elementary School when a young girl named Frisk enrolls. Monsters have been free for about a year. Young Frisk immediately takes a liking to you, and the feeling is mutual. Eventually, she, well, you'll have to find out. :P = Cover by @pweetyrainbows =

  • Mafiatale Sans x female reader (Possession)
    79.7K 2.2K 36

    Over thousands of years the Underground's hopes of becoming free had slowly disappeared and have gone to alternative motives: Money, sex and power. A human soul these days has become almost priceless with very notorious gang members and it just so happens their luck has just rolled in. Not only a human has strolled in...

    Completed