Sansxreader Stories

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...

You've been doing the same True Pacifist / Pacifist Run over and over in a place called the "Underground". Though you like the Underground, you can't help but...

Mainly what the title says. Lots of Sans, ton of SANS, Undertale sans, undefell sans, ALL THE SANS. BUT WITH A CHUBBY READER. WHHHAAAAT I KNOOOOW. READ FOR THE FLUFF...

A picture perfect family hides the fact that your life is filled with manipulation and abuse. When you move away after high school, you encounter more than one skeleton...

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...

'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...

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapp...

"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...

Y/N's best friend Blueberry (also known as Underswap Sans) invited them to move into the shared/connected apartment next door. They could hang out all the time! It's an...

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?

Sans decides to use a special fertilizer for his tomatoes...

[SEQUEL OF AT THE SURFACE, IF YOU HAVEN'T READ IT, READ THAT FIRST PLEASE] Summary: (y/n), even to today, was still a legend. Everywhere she went, people would honor her...

Sans loved her! He really did! He...he just could not let her leave! Now he will do what ever it takes to keep her with him which now includes keeping her from his alter...

[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...

This story is about a female human named Y/N. Y/N is like any other human who lives on the sarfuce. But she was getting pretty bored of her normal life, working at a gas...

Why can't you love me like them. Why (y/n) ... Why do you love monsters more than your own kind . Me : Well it's her choice to fall in love with who ever she wants. Fris...

(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...

It's been 5 years since monsters emerged from Mt. Ebott. They integrated into society rather quickly, but they still have people who disagree against the Governments dec...

One day you just need to escape from harsh reality, maybe the stories of Mt. Ebbot are true? *Trigger warning, this book does get dark*

You were afraid. For the first time in your life, you were truly afraid. You weren't afraid of the never-ending darkness that had now consumed you. You weren't afraid of...