Undertale
37 stories
Sans X Reader~When the underground finds you, let it take you. by SupposedlySuicidal
SupposedlySuicidal
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<SPOILER: DISCONTINUED (yeah, I didn't update for like 4 years)> Have you ever thought about what it could be like as a hybrid? Ever think what it would feel like to lose your parents? To be hunted down every day of your surface life? What if that question could be answered? Well I've got an answer for ya. It can. So, when the underground finds you, let it take you. . . . So...Heya.The names Stitched, Stitched the human and this - if you can't already tell - is my Sans X Reader. That was just a bit of a cheesy intro into the book... I really hope you guys enjoy this! . . . By SupposedlySuicidal {I'm off to bed I need sleep.}
SAVE (Asriel X Reader) by salchli10
salchli10
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Everyone knows of the story of how Frisk fell into the underground. Everyone knows how they became friends with every monster, and how he was able to SAVE them all... Except for one.... The little yellow flower that everyone knows. But, no one knows about the timeline where you fell down instead, and was able to SAVE everyone. Especially that little yellow flower.
This Flowers Already Dead. (Sans X Depressed! reader) by Weird_But_Trying
Weird_But_Trying
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You were alone on the world. Demons from your past chased you as your life on the street worsened. You had no love, yet you felt no hate either. For you simply existed. Though you did not have any reason to feel the darkness that was constantly there with you, you did. And it consumed you. Little by little. A orphan without an orphanage- that was you. So simple, yet so complex. A unique puzzle that could never be finished. As your thoughts consumed you, you began to wonder what could free you if the burden of your existence. Jump. Jumping killed all of them, jumping killed all of the children who had freed themselves of the cruel surface. Mt.Ebott had no mercy for the unfortunate, for it held creatures of death, But monsters were a myth used to scare kids. So, you jumped, you left your life behind you and you fell to the darkness. But you lived. And the demons caught up to you.
When Two Fates Intertwine (Sans x Reader) by ZanaBSparrows
ZanaBSparrows
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[THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.] Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a couple. Things are finally falling into place--there are no more resets, and Chara and Flowey have been a lot more quiet in the last few months. But things can't stay this way... can they?
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
ZanaBSparrows
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Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister. Please note the the story is primarily on Quotev, so updates to Wattpad may be late, or lag behind that of Quotev. The story also has the potential to become mature. (I haven't decided yet.)
Soul Mates (Sans x reader) by TheOmelette
TheOmelette
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Uh
Addicted (Mafia Sans x Reader) by AlissaShaw
AlissaShaw
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In a large city divided down the center into two territories, the humans, and the monsters, you're forced to pick sides. Living between monsters and humans have caused many close calls on your part. You try to stay out of it until a new type of drug starts circulating. This is no ordinary drug and it's sold by an extraordinary group of people. Cover art is not mine.
Anything Can Happen (Sans x Reader) by ForgottenMatter
ForgottenMatter
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An unexpected turn of events lands you in the depths of Mt. Ebott. Upon waking up, you found yourself with a interesting and skeletal duo. {Completed} Thank you so much for 10k+ reads and 300+ votes! \o/
Asriel x reader by chairebooks
chairebooks
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You did it, you saved everyone. But you can't help but feel like You are missing someone. Then you finally realize what to do. So you hopped in the mountain to find him.