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  • Fearlessness (UF!Papyrus x Reader) [COMPLETED]
    8.4K 321 17

    (Y/N) is a twenty year old girl who wants nothing but to escape her unlucky life. Luckily, she finds just the thing to get her out of this world. The Underground. Also, this is my first reader x character story so I hope it's not as bad as I think it is!! Pronouns used in this story are she/her :) Disclaimer: None of...

    Completed   Mature
  • Not Good Enough (UF!Sans x Reader) [COMPLETED]
    17.8K 836 20

    The dialogue in chapter 4 was inspired from the comic "Sooner or Later You're Gonna be Mine" from STARINGBACK :) *** It's hard being nice. If someone's mean to you, you can't do anything about it. You just smile and hide your crumbling soul. This is what (Y/N) has to deal with constantly. Her family is always tell...

    Completed   Mature
  • Furtastic
    46.7K 1.5K 25

    A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?

    Completed  
  • A Different Timeline (Short Underfell Fanfic)
    2.7K 159 8

    Sans. He's weak, right? A waste of time, right? That's what Papyrus, Undyne, and Alphys believe. . . . But what if they find out they are wrong?

    Completed   Mature
  • Let Me Fix You (Edge X Reader)
    2.8K 153 15

    It's kill or be killed. Always has been, always will be. You're life's always been shitty, and with the last guy you finally thought would love you? Yeah, no, he dumped you. You're just... done... broken.

    Completed   Mature
  • An Oath of Mercy || UnderFell Sans x Reader
    19.8K 765 14

    One clumsy moment and a broken leg are all it takes to leave you at the mercy of the very edgy and very hostile monsters of the underground. Thanks to your knowledge as a doctor (and oath to do no harm), you're able to convince the Great and Terrible Papyrus to keep you alive. But how are you going to find your way ba...

    Completed  
  • Not Just Evil (Underfell Papyrus X Reader)
    165K 5.5K 32

    Underfell Papyrus is viewed as one of the most ruthless monsters in the underground but what is really under that tough persona? Thanks to Tamqul on Deviantart for letting me use their awesome artwork as the cover!

    Completed  
  • Savior Of My World (Underfell Sans X Reader)
    13.3K 250 25

    What happens when a young girl falls into an unknown, cruel world full of monsters and trials to test her abilities. Who would've known one specific monster would end up falling for her?

  • (Underfell sans x reader (female)) UNDERCOVER
    492K 17.3K 64

    You're a human that has fallen into Mt. Ebott on the year where all humans dress as monsters...Halloween. So how will the monsters know if you're a human or not?

    Completed  
  • Gamble ~Underfell Sans x Reader
    76.3K 2.2K 46

    not every story has a happy ending

  • Yikes! 【underfell Sans x Reader】|Undertale AU|
    68.3K 971 20

    u n d e r f e l l You were searching for your brother Frisk. He was obsessed with monsters, he always talked about being their friend. You never understood. He talked about Mt Ebott and how he wanted to climb up it. You had a sneaky feeling he had gone there. You packed your bags, heading out of town to only find the...

    Mature
  • Charm Of Lies (Uf sansxreader)
    7.7K 252 52

    Y/n is a smart and pretty girl & she lies and her charm fools people, but can she fool an edgy skeleton when he pops up into town with a few other monsters after the barrier is broken. (Cover art is not mine. It goes to the rightful owner )

  • Forced Together (UnderFell Sans x Reader)
    1.3K 32 13

    You just got out of jail and was forced to move in with your pop star sister. She has some pretty interesting friends and when she has a party at her place, you meet them. You can be violent, you are an alcoholic and you have been to juvie for several years because of hacking and assault. You meet someone and find you...

    Mature
  • Broken Bones - Underfell Papyrus X Reader
    39.2K 926 5

    Y/N, a girl who is bullied, accidentally falls down a mysterious hole, spooked by an unknown force. Meanwhile, she meets a timid flower, who leads her through the dark underground. Brave and tough, she expects herself to survive the odd challenges of the underground; but how far will her courage bring her? Will she ev...

  • Flower you today, sweetheart? (Flowerfell Sans X Reader)
    207K 5.6K 40

    All the world, just hated kind people... they threated them as nothing and put them aside. That even happened in the underworld... They saw them as a sickness, what they don't know is that sicknesses spread... (Cover made by me :3)

    Completed  
  • An Old Friend ' Underfell Sans x Reader '
    104K 2.8K 30

    You and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just forget about you? To find out, read 'An Old Friend' Underfell Sans x Rea...

    Completed   Mature
  • Do you think even the worst person can change (UFsansxreader)
    18.2K 430 29

    (Y/n) and her sister were treated badly by their drunk father but that all changed when one day they both discover mount ebott. And an edgy skeleton.

    Completed  
  • See you from my eyes (UF! Sans x Reader)
    11K 211 25

    (Flashback from Feel You From My Soul) WARNING! CONTAINS SCENES OF ABUSE, RAPING AND TORTURE. SUICIDE REFERENCES. I scaped from my abusive parents with high hopes of finding a new safe place. While running away I fell into a new world, that place taught me that my parents weren't so bad at all. (If you're here for th...

    Completed   Mature
  • Reaching Out (UF!Sans X Reader)
    8.4K 339 13

    It felt like everyone could see right through you. It terrified you since the very beginning. That's when you meet him. If he can see through you, you would leave the Underground forever. But you love him, don't you? This isn't what you wanted. He didn't want it either, but... You can't help Reaching out. (Slowburn: U...

    Mature
  • ~Surface~ [Sequel to "Why do you care"] Human! Underfell Sans x Reader
    10.5K 370 12

    Fell was back.. And human?! People on the surface seemed to have lots of different opinions about monsters, and the girl who freed them. Is living a normal life even possible at this rate? [Cover art isn't mine]

  • ~Why do you care~ [Underfell Sans X Reader] [•COMPLETED•]
    238K 6.5K 51

    Warning: possible swearing, inappropriate humour, perhaps lemons? Idk. Just stop being a goody two shoes and enjoy the book, kid

    Completed   Mature
  • " I want to hate you, but I can't." ( Underfell Sans x Abused Reader
    9.8K 120 21

    Y/n was always abused by their parents. One night, Y/n finally had enough and she ran away from home to Mt. Ebbot. While climbing, she falls into a hole and ends up in Underfell, a cruel and rough on the edges place, where they meet monsters. But one monster ends up falling in love with Y/n. Will she accepts his feeli...

    Mature
  • The Underground's Bad Boy (Underfell Sans x Reader)
    3.9K 96 6

    Y/n was a girl that had only a few problems in life but they affected her daily. She was bullied in school, and had an abusive father that she had to come home to every day. Her mother showed her the good in the world. Other than that, all she knew was pain, but she still treated everyone equally with kindness, she ha...

  • Twenty-Something Years After (Sans X Reader)
    43.2K 2.2K 21

    [SEQUEL OF AT THE SURFACE, IF YOU HAVEN'T READ IT, READ THAT FIRST PLEASE] Summary: (y/n), even to today, was still a legend. Everywhere she went, people would honor her and still bring her gifts. All of this, because she apparently "contributed" to locking those savages away. Oh, how she hated what they thought, but...

    Completed  
  • ●~My Prisoner~● [UF!Papyrus x Fem!Reader]
    515K 12.5K 56

    [Completed] [[Lemon and Swear Warning]] [2019 Jan Note: This book dates back to 2017, where my grammar and spelling checks weren't efficient due to me being lazy. So I apologize for typos if any.] ---------------------------------------------------------------------------- How much more could a young girl possibly tak...

    Completed  
  • I Promise... (UnderFell Sans X Reader)
    19.8K 480 18

    Y/n lived with monsters on the surface but ever since the day they sent them down to the Underground she changed... she is much more terrified of everything but the only thing that makes her move on is the promise she made to her friends before they left.

    Completed  
  • Broken Souls, Broken Bones (Underfell Sans x Reader)
    559 3 6

    Y/N, a normal girl living near the mountain. A quiet type, very feeble and weak and frail. Her dog, a beautiful Bullmastiff named Tucker, accompanies her through her journey through the most dangerous, the most unbelievable place she could ever imagine: The Underground.

    Mature
  • Broken Souls (UF Papyrus x Runaway Reader)
    4.6K 139 11

    You are a run away from your home. Your drunken mother hasn't even tried to find you. You live in a small box in an alley way in which you barely can fit into to hide from the rain. One day you come across one of the monsters from the place known as the Underground. Could it get any worse?

  • Mad Love Fell!Sans x Reader [BOOK 2] (Completed)
    3.9K 208 24

    It is important that I inform you that this is the second book in the series. I recommend you read book one, but you don't have to. You can read this book, but you won't understand some things. Fell doesn't remember how it happened, just one minute he was closing his eyes to sleep in his own bed, and then the next he...

    Completed   Mature
  • My Little Puppy (Fell!Sans x Wolf!Reader)
    77.9K 1.6K 41

    (Y/N) is a human. She had lived her whole life as Sans and Papyrus's pet, which was even more appropriate considering that Alphys had done a few experiments on her giving her dog ears and a dog tail, as consolation for keeping her a secret. Then one day, (Y/N) manages to escape, and meets with Frisk. What will f...