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...

Not for kids lmao

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...

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...

Howdy, this is a flowey X reader thing, I'll try to post often.

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...

You were an orphan, and you had just been taken away from your parents or what's left of them, after that fire that burned down your house you lost three things your par...

Yes another fontcest I know. This is currently a work in progress so please be patient with me. Word average of about 1000 words per chapter

Upon reaching the surface Papyrus meets (y/n) a powerful demon and prince. Sans is weary of (y/n) thinking he might be trouble. Papyrus struggling with accepting his sex...

this is full of omotale stories I write please excuse my Shity spelling and grammar this is NSFW I do take requests some fontcest

Cross discovers his feelings new found feelings for nightmare. I don't own any of the cars in this doc so yea also its gonna have some nsfw/lemon later on so yea, But th...

Frisk always had a crush on Sans ever since they had left the underground. After she turned eighteen, she fantasized him of fucking her.

You aren't supposed to be alive. You fell into the bowels of Mount Ebbot - you were supposed to have died, right? It doesn't matter, anyway. Someone very frightening is...

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

Sum Sansby for your Souls ~30 Rly fluffy smut Lmao-

Warning : bad grammar

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...

What Should I Describe Here? I Guess The Title Already Says Everything so Far

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...