Nightmaresans Stories

A young woman, left alone after her family sadly passed in a car accident, suffers with PTSD and Anthropophobia (Fear of people.) Her only happiness in this world is the...

Sans had SIX different Soulmate tattoos. Not one, not two, SIX. So what happens when he finds them? Er, well, they find him. And let's just say... They're not the kinde...

What if..someone became the same parasite that was fresh? Not as the skeleton, but the parasite, the thing is, when this parasite gets memories of another life and their...

Not mine it's just too difficult trying to find it every time There is no part 2 don't blame me Original Autor @Manuru_15 Only publishing on weekends Also, episode 21...

Error is tired.. Tired of all the Fighting and Destroying... He jumped... but not to die... to get a break from it all. (Fgod concept belongs to harrish6, I do not own u...

I assume you know the story of Error. If not then allow me to tell you. Error was the god of destruction. He was forced into that role by FATE, a entity that was corrupt...

"lol what's this group chat? also, who the hell are all of you, and why the hell are you saying you're me?" aka sans meets other sans chatfic but it's angsty a...

Science!Sans made a reverse personality potion, they used it on Error, Such a big mistake. What will happen to the multiverse if the merciful destroyer changes? Can they...

Kinda like discord but with the Undertale Aus this will be very stupid

'passive' nightmare sans, as people called him, was trapped inside his own soul as 'currupted' nightmare sans controlled his body, spreading negativity throughout the au...

Dream was replaced by a new young Guardian. Well that's his cue for his retirement but... Oh well, not everyone let him retire and do whatever he wanted to do. Even af...

this is a story about a -force god of destruction- named error. ink has finally decided to get rid of error once and for all! he has decided to throw error into the void...

Killer was just an teen when his 8-year-old brother was murdered and he was kidnapped by Nightmare, his mothers good friend oldest. *WARNING! RAPE, GORE, AND OTHER THIN...

What if..someone was transported as a orca mer bit was also killer sans? What if..they were also the reincarnation of killer who was a mer in that au but died a while ba...

Dream suffered mentally after the apple incident,now he is has to keep the multiverse which has worsen him. After being kidnapped by the Nightmare gang,he doesn't believ...

What if both Error and Ink know about the balances? They both want a truce, but Fate wont let them. And if they try to tell someone, Fate just switches up their words in...

#1 of 61.7k tagged with Undertale 12/06/24 After drowning as a human, Ashe reawakens as a DustTale variant of Sans. With his ghost Papy helping keep him from falling int...

A 19 year old girl is reborn as the sans she created after being killed by a gorilla, but what happens when the multiverse is in love with her? .☆☆☆☆☆Various Sans x SANS...

Formerly known as, "Becoming the Dream of the Multiverse". Book cover is mine. A mistake made by the creator, a wish that was never ever bound to happen. "...

!! STORY COVER IS MINE, CHARACTERS DO NOT BELONG TO ME EXCEPT Y/N !! (ps, heavily inspired by my other books, mainly Multiverse's Unwilling Protector.) (Book is currentl...