Undertale
45 stories
Bitterly Sweet by SomeoneReallyGay
SomeoneReallyGay
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Undertale fontcest fic, NSFW warning here and here only. A sexy, kink-filled fanfic that probably doesn't make sense canonly. Pairing: Stretch (Underswap Papyrus) & Slim (Fellswap Papyrus). Plot: Razz is on a training course with Alphys in Hotland, staying there for a few days. Since Slim is the little trained Mutt we all know and love, Razz of course can't leave him alone. He calls up Stretch, an old friend Slim rarely gets to hang out with. In fact, he's his only friend. Stretch comes in, Razz is out of the house, and bad timing shifted everything. Slim is in heat and looking for a mate to impregnate. Goodbye manners, hello animalistic instincts. There will be build up. There won't be sin on the first chapter. I'll give a heads up before.
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Loving Letters by __Yami_
__Yami_
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Sans discovers that he loves his best friend Papyrus but he doesn't know how to confess. That is, until he notices all the bills have been removed from his mailbox and he has a letter... This work is updated every Monday! In this AU Sans and Papyrus are not related, they both just happen to be skeletons. Also this story with be basically third person Sans POV. (Yeah it's weird but I want to keep information from you hehehe.) WARNING: None of the artwork is mine and this is an AU!! This story is also originally written on AO3 and copied here, it's written by CursedUndertaleAuthor, aka me (Yami was taken so I couldn't use my normal pen name.)
Skeleton Family Cult (Fontcest) by BubblyShip
BubblyShip
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    Parts 33
Ever wonder why Sans and Papyrus never had their parents appear in their lives? Everyone else always wondered that. But there was a war, plenty of parents died during it. So did theirs. Right? They're back, and they can't wait to see their two sons and protect them from the world. It's a dangerous place out there, especially with murders going around. Papyrus is just happy to meet his parents. Sans really wants them to leave. And why won't they let anyone see what's in their basement? (Fontcest warning!)
Little Cherry by Thefangirlsfangirl55
Thefangirlsfangirl55
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Sans is getting tired of his brother making him miserable. Being taunted and being bruised. He works on his machine a lot more now then simply disappeared. Where did he go?
The Empty, Orange Bottle []Depressed Papyrus[] by TheGreatPapyrusWD
TheGreatPapyrusWD
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{•🖤Papyrus was always an happy, innocent... But you already know... Papyrus slowly started to get depressed, Remembering the resets, each time he got Killed. Papyrus was a good hider with his mask. But one day, something happened that changed everything and everyone who ever thought about Papyrus🖤•} ⚠️Warning! This book have Triggers that others may have, so please. Your reading has been advised⚠️ ❗️Cover made by: TheGreatPapyrusWD [Me]❗️ ❗️Inspirations: "Depression Kills, no exception" by RunningStone, "A depressed Papyrus story" by M-e-m-e-s, and "Ive given Up" by SticktheHermit❗️ 🔅Thank you all for the support of this story, it was original a vent story to get my feelings off, but I got quickly attached and now, its one of my favorite story's to update on🔅
Undertale: Step Two by NeonFinch
NeonFinch
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    Parts 15
The barrier has been broken for years. The monsters adjusted well, and time passed easily. Now, Frisk is grown and she decides to stay with her monster family, only to get even more rooted in their lives, and one of them more than the others. Humans are still apprehensive of the monster race. The War of Monsters and Humans is a distant memory, but the lore lingers on in the strangest of places. After all, with monsters must come magic, an art humankind gave away when they sealed the monsters into Mt. Ebott. Magic doesn't have a place in the human world, and there are a few determined to rid the world of it yet again. Frisk holds the key to solidifying monsterkind's place on the surface, or confining them all to the Underground forever.
Radom ships opinions  by rainbowdashboard666
rainbowdashboard666
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YouTube, fnfaf, Undertale, celebrities, and more trash. My official opinion on ships. ~enjoy.
Temporary Dad by NeonFinch
NeonFinch
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"And so... We're going to be... er, fosters, of a sort." I fumble, smirking to him as he stares at me, wide-eyed. Sans's jaw drops. "No." Complete and utter disbelief. And I couldn't be happier. Kris would finally be safe... --- Short project, taking place after the monsters escaped the Underground in the normal Undertale timeline.
Lost Together | Frisk x Papyrus by LilydaBest
LilydaBest
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Frisk wakes up one night to her two friends fighting. Sans runs away and Frisk discovers Papyrus' dark side. Frisk and Papyrus work together to find Sans when something unexpected happens.. .
A depressed Papyrus story by M-e-m-e-s
M-e-m-e-s
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Hello everyone! this is a story about a sad little bean TwT I started this book a while back, so its kinda bad at the start but it gets better! I have decided to keep on writing it so now there's a part two :0 *wOoOw* uwu so have a great day/night! ((this is one of my first fanfics and im not the best at undertale so please bear with me Xd))