Underfell Stories

You're the Ink of your multiverse, and you don't even know it. Well, until you meet the Ink of another, along with Error. -NOTES- I made the cover! This obviously isn't...

You are a doctor in the emergency department living in the city of Mount Ebott. You live with two magical skeleton who defy any type of logic and have a sleeping schedul...

After the monsters broke free from the underground they enslaved all of humanity. The monsters took complete control over the world and the world was powerless to stop t...

One clumsy moment and a broken leg are all it takes to leave you at the mercy of the very edgy and very hostile monsters of the underground. Thanks to your knowledge as...

(Cover Done By Me) Y/N is a very successful woman, who is the top surgeon in her job and has a family loan that is given to her every month. But even with her riches and...

When a dog is found in the Underground, Sans decided to keep the Mutt as a guard-dog and bait catcher. What happens when universes collide and this dog... isn't even a d...

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...

You were always put in second place due to your sister being favored over you. No matter what you did it always seemed that you both were competing against each other. Y...

Official remake of Ulty: Creation of a monster A story that starts from Dusttale and goes around the AUs, completely transforming our protagonist English is not my nativ...

y/n y/l/n is one of the people who has access to the magic in their SOUL. so she's working where everyone with magic that wants a legal job works, plus it pays real good...

Your everyday depressing fellcest- "Who Would Ever Love A Worthless Nuisance Like You, Sans?" The younger skeleton spat, glaring down at his chained brother. T...

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...

(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...

How would your life be as Sans and Papyrus's sister in Underfell?

Completely female readers unless a request asks different. That's...really about it, enjoy!

❝ Long Ago, Lived Monsters, Humans, Mages, and Dragons. All living in peace. Until humanity decided that Monsters, and dragons weren't meant to thrive in peace along wit...

(As far as I know, no one has made a story about naturetale like this so..and the only reason why I writing one like this is because of fatal error part 5? Or part 4, go...

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...

So harem book of Charas and Frisks x male reader but real description is below this. The only one of his person in all universes is part of Undertale with an OP powers b...

Y/n L/n. A special human with a special SOUL. Yes, her Soul Trait is something new. But other than her SOUL trait she has another secret. One day, while she was at the...