🎬 Undertale fanfic :>
137 stories
Classic harem pictures by Koushi_Wara
Koushi_Wara
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this is full of classic x aus! also..IF YOU DO NOT LIKE THIS THEN GET LOST. not my fault you read this ._. (Also If you complain, I don't care It's my opinion ..I don't accept Karens & complained elders.)
The secret/An Undertale story by NadderBlade
NadderBlade
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everyday Classic is abused by the other Sanses after the "incident", but Classic has a secret will never let any one knows including his own brother. will the sanses find out or will Classic keep his secret?
classic sans but different..?  -(classic sans x au sanses, underserve)- by Fl0we3r
Fl0we3r
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(on going!) -so, classic was fighting chara or frisk, frisk/chara won, and something appears on in front of classic.. teleport? he just presses it and he teleports in a forest, which his injured has gone. he is black and white, i meant the color, his color changes back to normal. he found his family again, papyrus, toriel, frisk, and others (i forgot their names lol), he just forgotten the past the wau they killed. it was becoming normal but got ruin. classic got teleport into a timeline (i forgot). in the story continued.
Au sans x Classic sans  by Crystalwolf10
Crystalwolf10
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Ink was thinking how he new all the aus well sorta but there's one that he know nothing about one sans that he did not create or knows about classic sans more in the story this is an au sans x classic sans if you don't like the ship get.Also there is a sorta twist in the first chapter I have no over idea how to class it
Living Bloody Characters (Classic x AU Sanses) by ysomnus
ysomnus
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[A story collab with LoloXtale!] Sans, an author, weaves oceans of horror within his books, immersing his readers in chilling tales. His narratives often delve into both realistic and imaginative realms of murder, an unexpected facet considering the gentle persona he portrays. Yet, as fate would have it, one fateful morning as he sipped his coffee and tuned into the morning news, a murder unfolded - mirroring a sinister description from his own work. A cryptic signature daubed upon the blood-stained wall sets him on a path entangled with those who've taken his words to disturbing extremes. Amid an unsettling obsession, mounting pressure to create, and a media maelstrom of falsehoods, the question arises: Can Sans break free from this infernal ordeal? As you start exploring the pages ahead, I want to let you know that the story will delve into some mature themes - things like gore, kidnapping, and other sensitive topics. I've included these elements thoughtfully, but whether you keep reading is entirely up to you. Stories can stir emotions and make us think, yet your comfort matters the most. Don't hesitate to take a break if the content ever feels too heavy. Just remember, your choice to engage with the material is personal, and I'm grateful for the considerate way you navigate these intricate layers of storytelling.
Lovely Planets Floating Around A New Sun- (Classic Sans x Au Sanses) by sadlypotato
sadlypotato
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Sans is a young man who studied astronomy to become an astronaut and after years, he was finally able to do it. It was know his first trip and when he did he found himself faced with a black hole. He was sucked in and brought to a new universe entirely, just different colors and shapes. The gravity levels were surprisingly the same aswell, because of lack of oxygen and supplies. He landed on a planet that also had weird colors, weird water, weird fruit, and what now. After spending some more time he has found skeletons that have a familiar look to Sans, but with powers and added parts (like wings, arms, etc.) The more he is there the more an obsession grows with the mysterious skeletons. What would Sans do? And how would he get home? (The old description reseted... for some reason.) Cover made by: Loloxtale
- please stay - by sertralinel
sertralinel
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Nightmare was about to leave, but a familiar hand grabbed his sleeve and he said "please stay -
Free by GhostlyAshamed
GhostlyAshamed
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This is a rewrite of 'We Know Who You Are' Hope you enjoy! Also I don't want to spoil it by the description. So know you just read to find out ;)
"The missing soul"    (missing classic sans au) by idunkowhst2pu
idunkowhst2pu
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after a bunch of resets classic had enough he decided to leave his au first he made the code so the multiverse won't break when he leaves he then started to pack his things then left leaving all of his friends and his brother wondering what he did wrong the player was shocked when they heard classics disappearance the au sansses heard classics disappearance and went on a search for him,why happened to classic where did he go find out yourselves
Undertale x Bnha Crossover (Being rewritten in another book) by CheapClown
CheapClown
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Classic finds himself in a new place after another RESET, later on meeting up with Red. They become friends with new people and eventually meet up some familiar faces. Will they get back to their world or will they perish in the process? !WARNING! -Cursing/Bad words -Disclaimer- None of the art or videos are mine unless I say it is. Undertale and BNHA belong to their rightful owners. Same with the AUs. (Sorry, I suck at descriptions. Slow updates)