Underswapsans Stories

He knows he'll be dooming them if he falls, but he's tired, his body is breaking apart, held together on a higher being's whim only. He wonders if there'll be another to...

Moved from AO3 because of reasons! "You are the only maid (or worker in general) that serves for the Skeletal Household. It's a skele-ton of work, but you manage by...

(ᴠᴀʀɪᴏᴜs sᴀɴs ᴀɴᴅ ᴘᴀᴘʏʀᴜs ᴀᴜs x ʀᴇᴀᴅᴇʀ) ||ᴀɴᴅ ᴛʜᴇɴ ɪ ɢᴏ ᴀɴᴅ sᴘᴏɪʟ ɪᴛ ᴀʟʟ ʙʏ sᴀʏɪɴɢ sᴏᴍᴇᴛʜɪɴɢ sᴛᴜᴘɪᴅ ʟɪᴋᴇ "ɪ ʟᴏᴠᴇ ʏᴏᴜ."|| Life was merciful enough to grace you...

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...

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...

"There IS worse fate than death" The cover isn't mine. Just a few warnings: -boyxboy -girlxgirl(maybe?) -blood -su¡cide(kinda) -death

When Dream loses his memories after receiving severe head trauma in battle, Nightmare and his team choose to take advantage of the situation...

[Prolong] My name is (Y/N). I have experienced many resets, so many I have lost count. The only people who remember are Sans, Flowey, and me. The monsters down here are...

It's been a few years since the events of Dreamtale. Dream is forced to constantly protect everyone's happiness against his brother Nightmare, and it seems nothing can s...

After a bloody battle with Ink, Error teleports to Outertale to jump into the Void. Ink and Dream followed him to continue the battle, only for Dream to accidentally fal...

Just Sans X Reader No Lemon Cover by my homeslice tkdgirl222 I don't own any of the characters in these story Don't kinkshame me I know your here for the same reason I w...

What will happen when ink plans with the other sanses to create an AU that will kill error if he destroys it and error doesn't act as planned? What will they find out ab...

Hello People! This is my first Fanfiction and Please Do not Judge me :> be good alright? "All of your Save Files Have been Wrecked,now you start to a New world...

Picture not mine credit to artist! This story is about Dream who never knew anything about Error but when they spend time together and over come obstacles, maybe just ma...

A book of Dreamtale oneshots I started writing in 2017 that gradually turned into an actual story by 2020. The writing isn't great at first but I assure you as the onesh...

Nightmare had some issues, big ones. His gang had left for the other side after a series of defeats against the Star Sanses had put them on the back foot. This meant he...

Since there is no or any "bonely hearts club x female reader" I will be the first one to do it... so I hope you enjoy this book.

being pulled away from your home while your simply enjoying some alone time can be annoying and to make it worse you have no say in the matter as 2 teams keep throwing...

I'm a simp for him and not many people make an x Muslim Reader.Since I'm aalso a muslim myself,so I make my own story.Anyway enjoy I gues. =D

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 anymor...