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Sans A.AU.L
113 stories
I thought we were. . Nothing by Anoterundertalefan
Anoterundertalefan
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    Parts 7
Error and Nightmare have been friends for a long time now. Both have been around longer then most, since one is a guardian and one a god. The pair were close. Best friends. The destructive god knew all about the king and the king knew all about the god. Or so they thought. One is hiding something. An obsession. A desire. A desire out of his reach. This is indeed, Errormare. Their heights will be cannon heights or at least close to them (Nm- 4'0, Error- 4'5) I will making them as cannon as I can Error is not apart of the bad guys in this story (at least to start) !Lemon included! There will most likely be mentions of SH, SA, neglect, physical and verbal bullying, and suicidal thoughts. If you are sensitive to any of these topics please click off. The italic doesn't mean anything. I just like italic. Cover art isn't mine!
the flower room by kibawolfy13
kibawolfy13
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    Parts 9
What will happen when ink plans with the other sanses to create an AU that will kill error if he destroys it and error doesn't act as planned? What will they find out about the destroyer? Find out in this story! (potentially errormare) I'll change the cover when i finish drawing it. I'm really sorry, I suck at descriptions. This is sort of a side project so don,t expect to much. i've fallen into the void that is the Undertale fandom. Forgive me. -nathaniel
The Passive Villain by I0wanna0die
I0wanna0die
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    Parts 14
Some May Think Nightmare Is...Evil, A Parasite... But What If That Isn't True? What If Nightmare Was Caring And Thoughtful? What If Nightmare Isn't A Parasite? What If Nightmare Was...Betrayed..? •❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎•❤︎• Ships: Error x Nightmare Dream x Swap Cross x Epic Classic x Dust x Fell? Horror x Dance x Lust Bill x 404 •⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎•⚠︎• ¡TW! Self Blame Abuse Self Harm
The Real Bad Guys by YourGlitchy_System
YourGlitchy_System
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    Parts 16
An AU where the Star Sanses are evil and Bad Sanses are actually the good guys, but no one knows it. Who will win on the fight of good and evil? Warning: Curse words
An Unexpected Trip by welpsonkelpsuwu
welpsonkelpsuwu
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The bad and star sanses have made a truce because nightmare has been cured. Now nightmare can turn into corrupted form or passive form whenever he wants. One day, Ink decides to bring almost everyone into a new au, dreamswap. Chaos ensues. !currently on indefinite hiatus, will return on chance i get back into the fandom :D
Gaster Blaster Complet Disaster by Lucky_Gremlin
Lucky_Gremlin
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Read and have a wonderful day!
The Echo of Consequences  by SpiritWolfNura
SpiritWolfNura
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    Parts 12
How many resets has it been? How much suffering have you caused? Is it worth it anymore? They finally made it to the Surface. Everyone was supposed to be happy, but when Sans is found unable to wake up the heavy truth settles. He had Fallen Down. Papyrus can't imagine why. He can't lose Sans! So he goes in search of answers, only to find more than he ever bargained for.
classic sans x sans au oneshot by _4r1e_
_4r1e_
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    Parts 23
so..........................................hi? lol as you can see its in the title its about classic sans and his harem I think I will mostly ganna do lemon I mean why not?. soo pls. no hate on this book and pic not mine. Created: 20219-2020 Finished: june 6, 2024
Reaching For the Final Exit (Suicidal Nightmare) FINISHED by snek_snek
snek_snek
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    Parts 18
Nightmare had been suffering with deep depression for his entire life. And when I say ENTIRE, I mean entire life. Though, it'd been getting worse with each passing day till suddenly the overwhelming, hurting, uncontrollable feeling of wanting to disappear just stopped bothering him. The feeling became numb. Then empty. Till suddenly it was the only thing that'd make him happiest. The feeling of death, The pain The emptiness It all made him want it. To know what it felt like. Nightmare wanted to die. So much
Close Call (Soukoku) by Lisa_Doublewhite
Lisa_Doublewhite
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    Parts 1
⚠️Bottom Dazai⚠️ Part 4 of this series! Dazai's legs trembled as he crossed his legs, one leg over the other. He bit his lip as his eyes glanced at the class's black board to the teacher at the front, chalk in one hand, textbook in the other. He was so going to scream at Chuuya later.