Undertale
43 stories
Child of Death, Destroyer of Worlds by ChaosDancer12
ChaosDancer12
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    Parts 37
A lot of Undertale fans have a theory that Error used to be a Geno!Sans. I disagree. Kinda... I just mention it once on Discord and suddenly, I have a lot of people asking me to write it. So, here it is.... Are you guys happy now? "Well, I guess that Fate was good for something..." Goth said as he stared at himself in the mirror, he had though that when he gained the ability to take on the form of who he used to be, he would still be short but instead, he was taller than Palette now. His scarf was the only thing that still fit him, he had to get new clothes. "Now, how am I going to convince Mom, Dad and Palette that I am who I say that I am without getting Ink's or Fate's attention..." ((The Cover was drawn by doodis2014.))
Duotale  (On Hiatus) by Nenaboo_Reacts
Nenaboo_Reacts
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A shy, timid, and abused thirteen year old girl named Siena finds herself and her eleven year old sister in the Underground, the realm of monsters. Will they be the ninth humans to ever fall into the underground and the third to escape? Will they free the monsters? Or will they turn them all to dust? Find out in this exciting book! Note : This is in a different timeline, but after Frisk left the Underground in a previous timeline. Note two : This is my first book, so no hate, okay? Note three : The Main characters are my ocs. Have fun reading!!! :-P
Sancest one shots (Completed) by _forgotten_soul_3
_forgotten_soul_3
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Yeah I'm doing this now. If you want more info go to the first chapter there will be some rules like how to request. Okay? Okay. Let's go! Also take whatever you think is cannon and leave it here because this book ain't about any of that. (Non of the art is mine unless stated otherwise.)
A Puppy's Love (PJ's Daycare x Small!Inu!Reader) by IsaGraceS
IsaGraceS
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Your mother was always busy, working hard to keep a roof over your head. She worked day shifts so she was never able to take care of you, so she had to hire babysitters, beg a friend, or something along those lines. She wanted to bring you to a daycare, but being half wolf, you were usually classified as a "monster" by most humans. Human daycares had a strict policy about monsters, so you ended up going to a monster one instead. It was there where you finally felt at home. ---------- -Cover art made by myself- ~Chapters are 1000 words or longer~ I'm mainly doing this because these look really fun to make, and I am quite a big fan of Undertale AUs, though for the most part I try to hide that...I haven't seen many of these, and when there are good ones then it becomes a total OC insert after the first chapter or so, so I'm gonna try to avoid that. I know those types of stories can be a real letdown xD Let me know what you think!! It's appreciated. I'm also up for suggestions!!~ Please tell me where a spelling error (hehe) is so I can fix it. Thank you!! Also, please check out the original creators of all the AUs and the creator of PJ's Daycare. Love your works!
Pregnancy Pains by StarRoseColors
StarRoseColors
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    Parts 11
After a drunken night with Sans, Frisk finds herself pregnant. In order to avoid abortion, she and Sans run away to Mt. Ebott. Now, the two must struggle together to be parents.
Even big flames go out (Ct!Pj x Ania) by charaplayzpiano
charaplayzpiano
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I DID NOT DRAW THE COVER I FOUND IT ONLINE! So... I'm kinda obsessed with this ship. Poth is still OTP! But, this is pretty high up on the list. I may not update a lot because this is more of a brain dump, but enjoy it when I do update! THANK YOU!
Undertale Parent Scenarios by ShadowGirl1996
ShadowGirl1996
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Hey guys this involves Papyrus, Sans, Grillby, Mettaton and Undyne. The others are brought into it later on. I do not own any links, videos, pics, links and/or characters. Undertale belongs to Toby Fox
Undertale Daughter Scenarios by FrenchPokingOtaku
FrenchPokingOtaku
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I was bored oh well but this is a scenario book so be warned this is my first and probably not my last so let us start and by the way your gonna start out as a baby to make things clear.
Undertale lemons  by Gokywasfound
Gokywasfound
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    Parts 10
Undertale fanfics Completed book
Surface? Or Underground?   Asriel x Reader   Undertale by Undertale_Weirdo_N
Undertale_Weirdo_N
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Frisk has left the Underground, think Asriel would turn back into the miserable flower, Flowey. Unfortunately he doesn't, making him being the only known monster left in the Underground. Another human falls down, (Y/N), and the very first person she meets is Asriel. Still watering the flowers. Only thing is (Y/N) left humanity to come save him, she's learned about him from her teacher, Toriel as she likes to be called. (Y/N) and Asriel grow closer as Asriel tries to get (Y/N) back to the surface since he does not want her to be stuck down here with him. After all, he doesn't know if he'll turn back into Flowey. But what happens when Frisk notices (Y/N) missing, since they were quite close. What happens to Asriel and (Y/N)? Read more to find out! *i do not own Undertale, Toby Fox does