Undertale/AU X Reader one-shots

Well. The title say it all. I will be taking requests!

Sansxreader Oneshots[discontinued]

Tbh some of the one shots have multiple parts! And this is filled with trash! So yea, read if ya want to Slow updates sometimes WARNING : THERE IS A LEMON IN THIS BOOK, IT HAS A WARNING AT THE BEGINNING, IF YOU DON'T LIKE THIS TYPE OF STUFF THEN SKIP THAT PART OF THE ONE SHOT THANKS

Hell's Hounds(Gaster!SansxReader)

So, Frisk set all the monsters free from the underground and they're becoming the ambassador for the monsters. And in this story Sans happens to be Gaster!Sans due to a 'accident' that is the cause of Gaster's death. And you're like forced to protect the 'gang' (Frisk, Papyrus, Gaster!Sans, Flowey, Undyne, Alphys, Met...

Lost {Underfell!Sans X Abused!Reader}

You were being abused. You couldn't take it anymore. But you also couldn't leave your kitten, Millie. So you gently put her in your backpack and got going. Your father wasn't looking. He was drunk, anyways. He probably didn't even notice the window in your room being opened. You made sure to lock your door before you...

underfell trash

my first story, don't judge. im horrible trash. underfell sans x reader! *squeee!!!!*

Don't Lose Determination |Underfell Sans Romance|

Many years ago monsters were at war with the humans, but one brave man locked them away in a mountain. At night it is said if you go up the mountain and go down a secret hole you will be transported to the monsters evil lair. But that was just a myth right? Wrong. My sibling Frisk fell into that very hole and well I n...

Determination {Sans x reader} Underfell

You are taking a family trip to the mountains and you're probably the biggest Undertale fan there ever was. Mt. Ebott was well known for its theories of monsters actually being down there. Since you know pretty much everything about Undertale you decide to go and explore Mt. Ebott by yourself. But something happens an...

Northern Downpour (Underfell Sans x Reader)

(Y/n) goes to Mt. Ebbot in search of her brother Frisk. But what she finds instead amazes her.

I'd Give My Soul to You: Underfell Sans FanFiction

At one time, the Underground was a nice place. Despite some vengeful monsters, most were harmless, kind-hearted souls. ... When a human fell down into the Underground, everything changed. The royal family took him in and raised him as their own along with their only son, Asriel. When a fatal accident occurs, and both...

Underground Adjustment [Sans x Reader]

What happens when you fall down, down, down, just to adjust to common life? An Undertale fanfic. Sans x Reader.. planning to make it long, so pull up a chair.

[Undertale] Sans X Reader - Repeat, Eternally

You've been here, again and again before. He's been here too, every time. So has Frisk, and Chara. So has everyone else. The real Sans had already moved on to another time line. You weren't able to make the jump. You were stuck in your last moments, forever.