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SONion if you find this PLEASE don't look at it ok
34 stories
Castle's Pet (Bad Guys X Reader) by EmelinStriker
EmelinStriker
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[Highest Rank: #1 in "sans"] [Second Highest Rank: #18 in "xreader"] (Girls only!) (Earlier updates are on my Quotev account!) WARNING: Profanity and Violence! You were a normal 17 years old girl from the Undertale universe, you fell down Mt. Ebott when you were 15 and you've lived in the Ruins with Toriel. Oddly enough, you haven't heard anything from (F/N) since you fell. And you knew he planned something. The Villains needed a new plan against the Star Sanses and some other heroes. What happens if a mysterious cloaked man tells them about about you?
What The Hell!? (Bad Sanses x Reader) by good_night51
good_night51
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This is a Bad Sanses x Reader in case you didn't know. This is going to be quite an interesting experience for dear y/n. Now. If you don't mind, I have some Sans's to kidnap. What? Do you think we authors just pull them out of a hat? There actually quite the hassle, I gotta say.
Show No Fear by Juniperlives43
Juniperlives43
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Aliza has created another reset only this time she isn't facing the horror house alone. He older sister has joined her, however her older sister doesn't seem to be able to show fear. What would happen when Sans meets her? How is she there? *Art and alternate Sanses or undertake universe I guess, belong to their rightful owners!*
~ 𝐄𝐱𝐩𝐢𝐚𝐭𝐢𝐨𝐧 ~     {𝑵𝒊𝒈𝒉𝒕𝒎𝒂𝒓𝒆 𝒙 𝑹𝒆𝒂𝒅𝒆𝒓} by dream_syzygy
dream_syzygy
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100 years after the tragic events of Dreamtale, the two brothers continue a war of hate and love. Any AU unfortunate enough to get in the way of the darker brother's path is either conquered or destroyed. Your universe, Recoveryswap, just so happens to be in the most recent crossfire. But with your personality and luck, you may just find yourself on the path you've always wanted. A path of violence, a path of excitement. And who knows. You might be the saving grace for a fallen prince. (It is highly recommended that you read 'Dreamtale: Origins' before this book.) [All characters belong to their respective creators. I am only the creator of Recoverytale/swap.] -Cover Art by Unknown- Book 2 of the Dreamtale Trilogy
A dream come true? (Nightmare!sans x Reader) by Determined_Reader
Determined_Reader
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Your life is miserable. Lets just put it at that. Your parents died at the age of 3, your foster parents abuse you, you are ridiculed at school, and to top it off no matter what you cant get these damn nightmares to go away. So..... You end up at the large apple tree on the hill, just before 'they' get home too. You sit down with the rope in your hand... And make a wish.... You get up to put the rope on the tree, and in turn, you on the rope. But... 'He' stops you.. It seems your wish has been granted. By the wrong guy?? ({TRIGGER WARNING BTW!!})
Black Roses (Overprotective!Bad Guy Sans' x Child!Reader) by JulesRedenger
JulesRedenger
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Nightmare found a young child a long time ago. When they fell into a coma it sent him over the edge. several hundred years later the child wakes up in a castle of darkness, surrounded by people, er... skeletons, that they don't know. Now they are being raised by murderers, cannibals, and world destroyers. Oh yeah! And their Uncle is the god of Death. Fun. WARNING (but not really): This story has been known to give people heart attacks and possible death from wholesome cuteness. I am not responsible for said medical emergencies or deaths. Read at your own risk. ~~~~~~ || Few things. 1) The first couple of chapters are going to basically just be Nightmare, but it's for plot reasons. 2) Dream is definitely going to be a little ooc. Don't like it, don't read. This is just for fun. 3) Like I said, this is just for fun. So, updates are when I feel like it. 4) I'mma try to keep the pronouns for (Y/N) gender neutral, but I may just drop that at some point. Depends mostly on what you guys prefer. 5) any art or videos added are not my own unless explicitly stated. Cool? Great. Let's get started.
Bad sanses x female reader (Completed)  by OfficialKzAngel
OfficialKzAngel
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"Memes addict Bad Sanses 1" [Original] XD This is my first book so don't judge me This book is basically bad sanses x reader with a hell lot bunch of memes. This book is all about entertainments, not anything else. ❕Cringe warning❕ Ps. This book is stupid and weird -KzAngel
His Summoner || Demon! Nightmare Sans x Reader by StrawberryMilkSnake
StrawberryMilkSnake
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When a demon summoning goes wrong, a rich and powerful man's son gets killed and (Y/n) is forced to team up with the Demon King that did it to survive the ensuing attempts on her and her family's lives. But the King will only do it on one condition: he gets her soul. So with no choice but to die for her mistake, His Summoner promises him her soul when the job is done. | - Demon! Nightmare Sans x Female Reader - A little bit of a reverse harem with plenty of Bad Sanses x Reader moments (with a canon reason for it :D), but ultimately, (Y/n) is Nightmare's - Honestly you could read this with no prior knowledge of any of the characters and you'd be just fine - Kinda a slow burn? But don't worry, I throw in so many subtle/not-so-subtle intimate moments with all the Sanses that it makes it worth the wait :D - I'll throw in some bonus chapters with the other Sanses for extra (non-canon) fluff that doubles as a breather from the story, too - Is the relationship toxic? Maybe. I mean, this is canon Nightmare after all. But that's the beauty of a fictional story, no? - A lot of the symbolism and hidden meanings aren't obvious, so you might have to be on the lookout to see them (and keep in mind: Night doesn't openly show many emotions, so the devil is in the details) - I'm not going to spoil anything, but for all you anxious readers out there like me, I'll divulge I'm a sucker for happy endings *wink* - It's my interpretation of the characters (kept as canon as possible)
Her Guardian || Demon! Dream Sans x Reader by StrawberryMilkSnake
StrawberryMilkSnake
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When a demon summoning goes wrong, a rich and powerful man's son gets killed and (Y/n) is forced to team up with the Demon King that did it to survive the ensuing attempts on her life. | Set in the same demonic skeleton universe as my demon Nightmare book with a different story, it's my take on the simple question: ''What if (Y/n) summoned Dream instead of Nightmare?'' | - Demon! Dream Sans x Female Reader - Alternate Timeline of ''His Summoner || Demon! Nightmare x Reader'' (but you don't need to read HS in order to understand Her Guardian!) - Dream has his own version of denial so it'll be a slow-ish burn again - Honestly you could read this with no prior knowledge of any of the characters and you'd be just fine - It'll be a reverse harem again (kinda), and I'll throw in some bonus chapters with the other Sanses for extra (non-canon) fluff that doubles as a breather from the story - Some characters get some much needed therapy (*cough* Dream) as well as more trauma✨(I don't eff around, and to prove it, characters will die) - A lot of the symbolism and hidden meanings aren't obvious, so you might have to be on the lookout to see them (though I think I was a little more blunt this time around?) - It's my interpretation of the characters (kept as canon as possible)
Disaster Coded || Error Sans x Reader by StrawberryMilkSnake
StrawberryMilkSnake
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There's only one rule for those capable of AU hopping: never bring a real person into the Undertale multiverse. But, like all rules, it was destined to be broken. | - Error Sans x Female Reader - Young Error - take places not long after he becomes Error - so he mimics his canon version more closely at the start before molding into my fanon version with experience - This intentionally doesn't follow the exact plot of Aftertale either - Achingly slow burn - I abuse Y/n more than necessary (oops) and Error is toxic pre-character development. This isn't meant to portray a perfectly healthy relationship, but show that perhaps even the worst person can change - The friendship dynamic is: bffs that insult each other for fun (while not meaning a word of it) & I include a lot of what's deemed 'filler' content b/w Y/n & Error (y'all just 'hanging out') bc there has to be a solid foundation for Error of all people to care about someone else - Expect a heaping helping of banter 👍 (I couldn't help myself)