Underfell Stories

You kind of zoned out for a bit, trying to piece together what they said, when the door opened suddenly. You let out a small shriek as your head slipped and you hit the...

"How rude, not even gonna ask for a name??" He teased. "Why are you here?" You glowered, raising the whisk. The skeleton scoffed: "Well, glad yo...

It has been 5 years since monster broke free from the barrier, since then monsters, and humans live together in peace. But for some reason monsters have some how go a mi...

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?

Y/n was half human and half bird. She had a dark tone of s/c due to her 'disease'. Raven wings was a part of this 'disease', along with interesting eye colors. This caus...

What if someone became papyrus from underswap? What if they gave their brother more freedom? What if they were the one that error kidnapped instead of sans? (Things wil...

What if..someone from our world was reborn as fellswap sans? But an accident when he was young leads to becoming blind for a long time and papyrus feels guilty about not...

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 letti...

Nightmare found a young child a long time ago. When they fell into a coma it sent him over the edge. several hundred years later the child wakes up in a castle of darkne...

This is an Underfell fanfic about Sans doing some sly stuff..That ends up hurting Papyrus in more ways than one!

[Highest Rank: #1 in "sans"] [Second Highest Rank: #18 in "xreader"] (Girls only!) (Earlier updates are on my Quotev account!) WARNING: Profanity a...

This will be my first book so please no hate. I am trying to make the book for both genders so if I wrote something for a specific gender please tell me. If you dont lik...

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. Mea...

Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another d...

Your a blind human girl who fell into the underground. After passing through the ruins, you met a edgy skeleton...

Hello everyone. This is my account in Quotev: https://www.quotev.com/Fearlesswoman I hope you enjoy

This is the rewrite, the old book is still out for readers to read for reasons I do not know of.

sOoo I've had this idea where they have soul mates. Like everyone is born with a half heart necklace. Every time the person gets near their soul mate it will heat up as...

Hi there, if by any chance you've happened to stumble across this book, this is me, creating a storyline for my own au which I'll be mixing up with some other familiar o...

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a...