Sansxreader Stories

'When I was 13, I killed someone. By accident of course... It was the day I found out I possessed some type of power.' You kept it to yourself for years until one...

You climbed the famous Mt. Ebott to prove to a group of your friends that humans don't disappear when they go up the mountain. While walking around the peak, you trip ov...

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over a...

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...

Sans always believes (Y/N) is the one who makes him feel all of the pain and nightmare. But is that the full truth? What if he finds out all of the truth and gets ti...

-Discontinued and Unfinished- Skeleton brothers Fresh and Unfresh have never gotten along. Especially when it comes to sharing things. So, when both of them meet (y/n) a...

A young girl going by the name of (Y/N) (L/N) has unfortunately caught the eye of a certain large skeleton...let the chaos begin! ☆More to come later!☆

Imagine Undertale, but Chara never showed up. Chara wasn't the first human in the Underground. What if a glitch occurred, and you fell down instead? You fell into the Un...

You're tiny, maybe around the size of a large mouse, and you've been separated from your family, except for your older sister. Then, she's taken away from you and you ar...

It was twelve AM on a friday night- or saturday morning. You'd just finished working a double at the bar; tired and achy as all hell, all you wanted was get home and get...

(Y/N) was orphaned at such a young age that she had no recollections of what it would of been like to have parents. Perhaps that was a mercy. If she had remembered the...

CONTAINS SPOILERS FROM BOTH PACIFIST AND GENOCIDE RUNS After a horrible situation, I (Y/N) scaped from home to avenge my (sibling). In a failed attempt, I got lost and f...

(Y/N) absorbed a monster soul when she was little, gaining skeleton powers. Many years later, (Y/N) and her sister Frisk fall into the underground, meeting Toriel, their...

A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?

What instead of having a son, Toriel and Asgore had a daughter? A daughter who never died? A daughter named (y/n). Monsters have been locked in the underground for many...

A bunch of reader oneshots with different AU's Sans. Feel free to give me suggestions. I would greatly appreciate it. There will be a chance of a few other oneshots. So...

[Frisk's Parent Reader | Slow Burn] The dichotomy between black and white is your constant when it's time for you to meet the whole new civilization Frisk brought along...

The war between the two guardian rulers and their kingdoms lasted for countless generations. Then came the news that Nightmare went ahead and got himself some new "...

I dont even know what i'm doing. I just love sans and stuff...... fuck my life what even is this Its a "love" story (ew) including frozen spagetti and bad puns...

Knife in your hand. The still air in the hall sends chills down your spine. You've been here many times before, why does it feel different now? I've been here about 50 t...