Undertalesans Stories

--Long ago, two races ruled over Earth-- --HUMANS and MONSTERS-- --One day, war broke out between the two races-- --After a long battle, the Humans were victorious-- --T...

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...

Moved from AO3 because of reasons! "You are the only maid (or worker in general) that serves for the Skeletal Household. It's a skele-ton of work, but you manage by...

Everything was normal in Nightmares castle. All the 'Bad sanses' were doing their thing. Well, what happens when they decide to question Nightmares mysterious past and s...

Warning this contains suicidal thoughts. If you're sensitive to that sorta stuff I don't recommend reading this.

An au sanses x MONSTER reader x au papyruses? Papyri? A fanfiction, it is not self-indulgent. So if your just lookin for some fanfiction to put yourself in, here it is...

a golden soul so a exceptionally rare soul that provides great power but comes at a price most monsters thinks the golden soul is a myth but what happens when a monster...

BTW, In this story, Frisk will be a girl. And Frisk is a houseguest, not known as their brother. K? k. Undertale belongs to Toby Fox, this story belongs to me, you belon...

"Platonic or romantic doesn't matter. It's still love." Hi y'all~! Since I've been writing a number of Sans x Frisk (I personally call them SF X3) one-shots on...

Part 1 to Chevron's (my) story. Frisk goes on a genocide run out of curiosity, then he meets someone of interest. Determined to befriend Chara, he continues to do genoci...

Since there is no or any "bonely hearts club x female reader" I will be the first one to do it... so I hope you enjoy this book.

After falling down Mt.Ebbot, you find yourself in Snowdin, a small town in the UNDERGROUND where two skeleton brothers live, Sans and Papyrus. These brothers are vary qu...

This is a medieval AU, where Classic is a prince of a kingdom, while Red is a thief/bandit in the Kingdom Classic isn't happy with his life, all the formalities and etiq...

One day, Sans fell sick. His sickness came out of nowhere and it cannot be cured no matter how many medicines Gaster gave him. Because of the sickness, Sans stayed still...

when the monsters finally get to the surface, what happens when sans is abandoned? when his friends start to not really notice him, a horrible feeling of loneliness sets...

THIS IS HEAVY KILLER!SANS CENTRIC... little guy needs some attention and by the stars im gonna give it to him UH. i think most of these will be me rambling about killer...

This Is A Fan Fic For My Favorite Undertale AU Ship Honey Mustard! (US!Papy x UF!Sans) -Disclaimer- UnderSwap Papyrus and UnderFell Sans do not belong to me. UnderSwap P...

horrormare is my new obsession there will be fluff, angst, lemon, and lime all art that is shown I have made unless said otherwise. I'm not good at storytelling and spel...

{COMPLETED} When Frisk climbed Mt. Ebott, she had expected to simply be erased from existence. But instead, she awoke Underground, and found herself in the hands of crea...

The secret love life of Sans and Toriel. ... It was a beautiful day outside, birds were singing, flowers were blooming. On days like these I would be taking my daily nap...