Twisted Souls Underfell!sans x reader
- Reads 42
- Votes 6
- Parts 6
MatureOngoing2h 7m
Last published Mon, Jun 23, 2025
You awaken alone in a frozen wasteland, memories fragmented and a strange fireball seared into your mind, survival is just the beginning. Drawn into the shadowy world of Fell Sans-gruff, dangerous, and endlessly watching-you realize your soul holds a secret that could unravel this broken world. Haunted by nightmares of a mad caretaker and a dying flower, you must navigate a twisted landscape where trust is deadly, love is a weapon, and darkness lingers in every glance. Can you survive the cold embrace of this haunted town-or will your burning soul consume everything, including yourself?
Public Domain
Join the largest storytelling communityGet personalized story recommendations, save your favourites to your library, and comment and vote to grow your community.
You may also like
Stuck Together (Nightmare!Sans x Reader)
(First wrote this on Quotev loll) Humans and Monsters. Most people despise monsters, but not you. In fact, you fell in love with one. A king. And a Human. Who knew that a monster made of negativity could feel love. Who knew a person could love someone like that. Who knew that you being a negativity battery, would lead to a love story. Who knew that *he* would fall for someone as simple as you. #3 in #nightmare - 5/23/22 #3 in #xsans - 5/23/22Complete
Undertale:Secrets
Remaster on my page - check it out! Sans has had an interesting past. A past that even his beloved brother barely even knows of. A past that he wishes could remain a secret. But when the questions start being asked, what does he do? These questions seem so little, yet they cause so much to happen. One little question. "Who is ??????" can change so much. A chain reaction from a single sentence can cause an entire world to crumble. Or maybe two. This is my first book so dont expect anything great. Inspirations: The "Better Times" trilogy by: @ANinnyMouse42 "Royal Blue" by: @dealialestine Started: 24th May 2021 Finished: 29th December 2021 A full 7 months of great fun with this book! Cover art by someone? I couldn't find the original owner :( Undertale by Toby FoxComplete
SOULmates Across Worlds
You were just walking home. A tear in reality split open underneath your feet and suddenly you were falling. Falling Falling Then you fell up and onto the tiled floor of a basement lab. Now all of a sudden you're in another world and surrounded by 6 strange skeletons (plus one's brother). Being terrified of all things horror and monsters, what are you to do? *Will contain mature themes but no smut*
Underfell Sans X Frisk
When Frisk falls into the Underground, she is horrified to discover the world of monsters is every bit as evil and broken as she had been told her entire life. But when she meets Sans, she wonders if there is love inside some of the monsters after all...Complete
Underfell Destructions Pearl
Your friends have dared you to go into the cave that no one had ever returned from, The grusome legends date back for as long as you can remeber. After falling down into a hole that has no escape you must face up against Monsters. who are relentless killers and your only friend is a strange talking flower. Will you survive or die trying?Complete
Your Fault ~ Underfell Fanfiction
{COMPLETED} Sans' life isn't easy, and living in an Underground society filled with torture, rape, and murder doesn't make it any better. Every single day is a struggle, and Sans tries so hard to fit in with other monsters and live up to his brother's standards, but sometimes it's just too much. Will Sans be able to pull through, or will the darkening thoughts that are engulfing his mind and Soul take control, and swallow him up into a void too deep and dark to ever imagine? DISCLAIMER: UNDERTALE is owned by Toby Fox. UNDERFELL belongs to the AU Community. COVER IMAGE edited by me. I do not own the original image. PLOT/STORYLINE belongs to me. The events in this story are not canon and are simply for the entertainment of myself and my readers. Any OCs mentioned in this story also belong to me. MATURE CONTENT WARNING: The events in this story contain mature content that some readers may find triggering and/or disturbing. Read at your own discretion. Thanks!!Complete
Flower you today, sweetheart? (Flowerfell Sans X Reader)
All the world, just hated kind people... they threated them as nothing and put them aside. That even happened in the underworld... They saw them as a sickness, what they don't know is that sicknesses spread... (Cover made by me :3)Complete
What We Hope For (Sans X Reader) ✨UNDER EDITING✨
Everyone has a happy ending. If you're not happy it's not the end . . . . •°•°☆°•°• Y/n (that being you) fell into the underground at the age of 13 and found refuge inside a hidden house in the snowy forest. Fast forward 10 years later still no one knew of her existence. That all changed within the span of a year. First there was a punny skeleton, then a child with a striped sweater, then chaos. Memories of the past resurface, A romance blossoms, Drama rises, Follow y/n as she learns again what friendship, trust, fun and love is. I HOPE you're up for it. •°•°☆°•°• [Warning the story is rated for older teens as it will have: - mild profanity - creepy descriptions - violence (ranging from mild to slightly graphic) - blood - murder - trauma - genocide - suicide (only in one chapter)] _______________________________________ Specials/Extra content: ⤵️ 🎃 Part 1: Available 🎃 Part 2: Available 🎄: Available 🍳 : Available 🔪 : Available Q&A : Available 🎃 Rewrite : coming soon _____________________________ Highest rankings: #2 xreader #1 Undertale #1 Sansxreader #1 Sansxfemalereader #1 Frisk #1 Determination #1 Asgore #1 Alphys #1 Toriel #2 Papyrus #2 Flowey #2 Undyne #2 sans ______________________________________ Credit to artists for cover and any chapter artwork. All characters except for the ones I create belong to Toby Fox, creator of Undertale.Complete
(First wrote this on Quotev loll) Humans and Monsters. Most people despise monsters, but not you. In fact, you fell in love with one. A king. And a Human. Who knew that a monster made of negativity could feel love. Who knew a person could love someone like that. Who knew that you being a negativity battery, would lead to a love story. Who knew that *he* would fall for someone as simple as you. #3 in #nightmare - 5/23/22 #3 in #xsans - 5/23/22
More detailsContent Guidelines