rorkitten

You have lived in the underground for 4 months now, and had befriended the most adorable cinnamon roll ever, Sans. However, you couldn't help but to gain feelings for his brother, Papyrus, even if Papyrus pretty much hated you. Could you change his mind? Get him to fall in love with you? There was only one way to find out.Reader's gender is not specified!Also Papyrus doesn't smoke in this story, sorry if you wanted that!Credit to Dizplicity for the artwork! Please check them out, they're amazing!http://dizplicity.deviantart.com/…

paranoidvoidart

well this is my first x reader book hope you guys like it i accept request…

Author-Dayo

this is a love story between swap sans and the reader, the reader falls runs threw MT.Ebott trying to escape her twisted guardians when she is shot into a massive hole. Lost and hurt in an unknown place she is saved by a kind man who takes her in and treats her like family.Obtaining powers and learning about herself in the underground she uses them for good and helps get everyone out.Determined to help the people she Loves and holding onto her Hope she fights to survive and free everyone.this is my 1st Undertale fanfic and I wanted to start with underswap~ (if I get some things mixed up I'm sorry)…

TheGrinningKitten

(I DO NOT WRITE ABOUT UNDERTALE ANYMORE SO PLEASE DON'T REQUEST ON MY CHAPTERS) (AND FOR THE LOVE OF GOD STOP COMMENTING ABOUT MY GRAMMAR, I AM SWEDISH AND I HAD A HARD TIME LEARNING THE ENGLISH GRAMMAR. I'M MUCH BETTER AT ENGLISH NOW)This is my oneshots of UnderTale. It invloes AU'S to! Background picture by Casper-Cat on Tumblr, editing by me, and editing program is called covercreator.net. Mostly X reader…

CozzyTuxKitty

[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.)…

Ally_Sato

Want to hear my crazy stories about my OTP? This is a book filled with it. I present to you my one-shots of Sans x Frisk!…

smolbean108

"You can choke, so don't choke."This is what happens when I'm left alone and bored.What? I was bored! Did you really expect this to be good?I do NOT own this cover!!!…

Kim__chan

Error Sans in Underswap comic. "The comic doesn't belong to me"…

mylittlepinkamena222

Just Sans X ReaderNo LemonCover by my homeslice tkdgirl222I don't own any of the characters in these storyDon't kinkshame me I know your here for the same reason I wrote these >:) Also these are for girls but you can change the pronouns and the girly stuff to guy stuff I don't care. @tkdgirl222 edits and helps write all of the stories.…

MorningSweets

**PLEASE NOTE**-Cover art does not belong to me, I will only take credit for the stories, I do not take credit for characters.-I will not do any lemons -This is my first book-I try to make this gender neutral but I may accidently make it mostly female in some chapters.Ranks: #1 in #sanses 2/18/2021…

ThatAkutagawaKinnie

No art is mine!IT'S BACK…

milkeco

Cover by @sergeantmisos on Twitter.Likely not to be updated for at least a few years. So sorry <3 undertale and its aus aren't really something I'm fixated on anymore!…

Marvelfbf1

(Cover not mine.) I saw there wasn't very good information lists for bitties so I made one. This is just stuff I found online about each bitty. Chapters are different lengths.Bittybones by Crybaby on tumblr.Expect some cursing.(I've written "bitty/bitties" so many times now the word doesn't look like a word anymore.)Author's Note: If you want to use this book for your own book or work. Feel free to do so. But it would be great if you could still send me the link or title of your work (and site/app if publishing other than Wattpad). Just so I can check out the work when I come across the link/title. Thank you.…

Tr33Hollows

An au sanses x MONSTER reader x au papyruses? Papyri?A fanfiction, it is not self-indulgent. So if your just lookin for some fanfiction to put yourself in, here it is. :)…

Arzuera

Your heart has always been a problem and your mute vocal chords have made it impossible to achieve your dreams. But that doesn't stop you from aspiring to be a songwriter and a certain monster robot may be the key.…

findmybonesplease

Just some one shots for all my undertale lovers. I do AU's like Underfell, Underswap, Horrortale, Mafiatale and stuff like that. Requests are currently CLOSED.…

Artsyrogue

Ok I have never done a oneshot book before -_-WARNING: VERY SLOW UPDATESlet's get the first thing out of the way-I don't under any circumstances own:-The Gaster Gang by Bunnymuse-Undertale by Toby Fox-Any art-Any YouTube videos let's see which characters you will be shipped with--WingDings: Undertale-Swap: Underswap-Fell: UnderFell-Blindy: Newtale-Stars: Outertale-Maestro: Underbeats-SF: SwapFellI'll explain everything in the first chapterBaiiii!~…

Fandomz_Fanboy

You are locked below ground where nobody can find you. Chained to a wooden post in a dark, cold room. You are left with no memory and pain all over. You are left there for unknown reasons.That is, until you are found. Someone has come to save you.And they love you very, very much.…

JasKJackson

You're trying to convince Underswap! Sans to be your friend, so you do the most reasonable thing you can think of. What might that be? Flirting, of course! But when he takes it a bit too seriously, you wonder what you've gotten yourself into... Cover: Look up Underswap Sans on Google, go onto images, and click on the first picture. It's on pinterest too if you can be bothered to find it.…

JimmySMASH4daWIN

Papyrus finds himself curious about the machine Sans has behind their house. When he accidentally activates it, he ends up sending himself to the world of Underfell. Meanwhile, Underfell Papyrus is sent to Underswap and Underswap Papyrus finds himself in Undertale. Now they must find a way to swap back to their own universes.…