Fontcest Stories

Underswap Sans x Papyrus EXTREME NSFW! (I do not own any pictures including the cover photo) Sans gets curious as to why Papyrus comes home drunk all the time, so he ta...

Enjoy these one shots [⚠️ WARNING ⚠️ MATURE CONTENT]

Ships: Killer x error Nightmare x cross Lust x horror Shattered x horror Dream x epic Reaper x geno Reaper x error Fresh x dream Fresh x dream x epic Error x dream

WARNING: FONTCEST Im falling for my own brother. I'm ashamed. I confessed once, he ran off. I may have to confess at a better time. I use to do movie night with him. He...

• discontinued • One day an abused skeleton appears out of nowhere. He looked like he needed help... He looked like he needed...love...caring.... The tall skeleton notic...

(Toby Fox owns UnderTale, the cover is my own art, and I'm trying out unusual ships and Fontcest is the next in line following Sansdyne. Why not?) Papyrus used to have t...

A skeleton named Sans falls in love with the only thing that makes him happy, that made him feel complete... his brother Papyrus. But when sans suspects papyrus of falli...

Yes another fontcest I know. This is currently a work in progress so please be patient with me. Word average of about 1000 words per chapter

Just request what ships you want, any ship at all relating to undertale and it's au's. Request weather you want fluff, lemon, angst, whatever. Otherwise, enjoy!

After a painful run, Frisk Reset. Ever since they did, Sans had only been getting Nightmares every night. Papyrus tried to help as best as he could, but Sans never allow...

Desesperación, siempre es relacionado con perder la esperanza, pero no es sólo eso. Aunque, no vamos a hablar sobre la definición etimológica de la palabra "Desesp...

No cute potatoes, there will be a lot of cringy smut in this. Also, I'm not going back to check often, so mistakes will be made. This may or may not be purposefully crin...

smut I love this ship

[Y/N] was just going about her day gathering food and materials for her fellow Bitties, when she spots something she had never seen before. Skeletons! Giant, walking, ta...

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...

Fontcest! (Warning Smut!) If you don't like fontcest then you shouldn't read this. In this sans is a merchant and he and papyrus get down and dirty. ( Sorry I suck at...

this ended up being a dreamswap book oopsie

Warnings: Sans x Papyrus SLIGHT/IMPLIED NSFW. The book itself will have some angst, but I'll put trigger warnings if you are sensitive to them. If you don't like this sh...

. It's the year 20--, Monsters, Humans, and other fantasy creatures have lived with eachother for many many years, but there is quite a bit of discrimination. T...

*None of the art in this book are mine* This is my first "Person x Person" fanfic so please be patient with me (^////^) This is Fontcest so if you don't like t...