Fellcest Stories

39 Stories

Red, of the Ruby Kingdom by Serynos
#1
Red, of the Ruby Kingdomby Serynos
Red is the "princess" of a prosper kingdom, but at the death of his father, he is forced to find a husband who can rule with him. The choice is difficult when...
Royalfell (Fellcest) {On Hold} by Gonerkid101
#2
Royalfell (Fellcest) {On Hold}by tEmMz
Asgore dies Papyrus becomes the new king Who is he gonna choose as his queen? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A series of one-shots, telling how Sans became Papyrus's...
but Nobody came (Fellcest) by Gonerkid101
#3
but Nobody came (Fellcest)by tEmMz
How Papyrus and Sans deals with Sans running away. Maybe their lives will intertwine again. This is an alternate version to the AO3 story 'April Fools'. In the orginal...
T O  M A K E  Y O U  M I N E [ON HOLD] by __APATHETIC
#4
T O M A K E Y O U M I N E [ON H...by Underfell Papyrus
Your everyday depressing fellcest- "Who Would Ever Love A Worthless Nuisance Like You, Sans?" The younger skeleton spat, glaring down at his chained brother. T...
Random Fellcest Story by Iamtrash999
#5
Random Fellcest Storyby Sanstalope
not much happens. *wink wink wink* I'm bad at summaries. this is trash and edge and stupidity. don't read it, it's horrible XD
Sans One shots  by Iamtrash999
#6
Sans One shots by Sanstalope
Nyeh heh watch as I make smutty one shots out of my art. (⌐■ ͜ʖ■) Every art I show, will be turned into steamy garbage. Or no art. Just fontcest
I dunno some Undertale au lemon shit by PopRocksbnha
#7
I dunno some Undertale au lemon sh...by PopRocksbnha
This is just some stuff I came up with at night time. By the way all of the submissive are females because I find it harder to write them as males. Don't know why.
Little Smol Cherry by ShaylaCJ
#8
Little Smol Cherryby ShaylaCJ
Random things that I imagined in my head and keep on continuing it in my head and also i always forgot XD
A collection of Undertale one-shots by Emnashi
#9
A collection of Undertale one-shotsby Emnashi
A collection of Undertale one-shots I have wrote. Does contain fontcest will not contain sex. Simply some romance, fluff or darker stories.
Fallen Down by Stampyfan15243
#11
Fallen Downby GirlInAFandom
((DISCONTINUED)) After Chara erased the timeline, everyone had to go somewhere. That somewhere for Sans just had to be the Underfell universe. The people of snowdin in t...
Kids of the Underground by Omegaverse_Lover
#12
Kids of the Undergroundby Jessica Parrish
Hey you guys just thought I'd put this here, these are the kids of my fav pairings from Undertale hope y'all like it. If y'all don't that's fine just please don't be mea...
Fontcest by alwaysjamaican
#13
Fontcestby Storyteller
I LIKE FONTCEST PLEASE DON'T HATE ME This will include head canons of the brothers and rp
Life in the underground  by jacksepticeyfan
#14
Life in the underground by jacksepticeyfan
It starts off as the way you are at home, then a massive twist happens nocking you into the underground. You continue this new place and meet different monsters. But you...
Ask and Dare Fell!Sans (& Friends on occasion) by EdgyMcMyChemRomance
#15
Ask and Dare Fell!Sans (& Friends...by Mustard is bæ
Ink!Sans and Error!Sans gave me a bit of the Anti-Void to use for this, so that's where I'll be hanging out most of the time. So basically, my admin says that this is go...
100 things. by The-Assassin-Kitz
#16
100 things.by The-Assassin-Kitz
There's 100 things he could've done but there's 1 thing he has to say to get him stay. They say brother's are inseparable but when disasters happen will that still be tr...
Don't Know What You Have Till You Lose It by Call_Me_Logan
#17
Don't Know What You Have Till You...by Call_Me_Logan
'I hate you' 'you can't do anything' 'your holding me back' all things said to Sans by the one he loves the most his brother he took his insults, he didn't mind the fact...