Undertail Stories

You've lived your life without ever knowing your parents. Despite that you dream big because you don't have much; aiming to become a famous singer and prove anyone who h...

Nightmare, The King of Negativity, known for being cruel and torturing people. But oddly enough he feels lonely, I mean it must be hard when his only friend Error is alw...

It's almost the end of highschool for Killer, an 19 year old student at a human and monster school on the surface. Killer isn't ready to leave the highschool yet as he's...

Not for kids lmao

It's been a while since Horror's world could be considered even remotely kind. But a newcomer drops in, and reminds him that there's still sweetness to be found in life...

A skeleton named Sans falls in love with the only thing that makes him happy, that made him feel complete... his brother Papyrus. But when sans suspects papyrus of falli...

" why dont you just take a swan dive off a building and hope that in your next life you get a quirk " was the greatest advice given to the quirkless boy izuku...

Yep, art not by me by the way, there will be inappropriate references in here

basicaly a big book of my favorite sans in my favorite role;Error as a bottom.

Ah here we go first time writing h a h. Anyways. Lil quick warning there will be -Smut -Fluff -Angst -And some kinks (For example size difference) If you do not enjoy a...

The art for the title cover is by Pencil_loves_mm on Twitter! Creation and Destruction able to find a balance and keep peace? ...maybe.

This is just some stuff I came up with at night time. By the way all of the submissive are females because I find it harder to write them as males. Don't know why.

Hello! Here is a fanfic that I will write for you people who wanted this but couldn't find any.

Plz give me suggestions of what to do next and if I don't upload for a while it's because I have important things like school homework and I'm probably thinking about wh...

It is quite simple!! Just a bunch of stories that are hopefully enjoyable! The updates will be slow and sometimes I upload more than once a day! Also the cover is MY art...

well, you read it right. sanscest oneshot. Im a multishipper so, every ship is accepted here! Except Swadmare unless it's not toxic! This will be a very slow update sinc...

I'm doing the 30 day OTP challenge This will be Error x Blueberry aka ErrorBerry

Just a drabble :P This story will include 18+ content, if you're comfortable reading that then move along, but if you are younger than thirteen and still have not had...

Error and Fresh make some lemonade if ya know what I mean. ( ͡° ͜ʖ ͡°) (Very NSFW. Mature audiences only. Have fun reading about two skeletons doing the horizontal tango...

Comics of undertail