Sansundertale Stories

434 Stories

Money, Jokes, and War (Sans x Reader) by awkward_casey
#1
Money, Jokes, and War (Sans x Read...by no<3
A young girl, Y/N, has one of the rarest soul types- -empathy. She can feel when people are having a bad day which leads her into meeting two skeletons. While one quickl...
Tsundere Much? (Afterdeath) by ThisWeirdReader
#2
Tsundere Much? (Afterdeath)by Kyle Broflovski
After the Christmas party, Geno thought he'd never get to see Death anymore. Boy was he wrong! After a couple of chilling moments and heartfelt scenes, something happens...
☽ 𝒍𝒖𝒓𝒌𝒊𝒏𝒈 𝒊𝒏 𝒕𝒉𝒆 𝒔𝒉𝒂𝒅𝒐𝒘𝒔 ☾ nightmare sans x reader by Xxk0xX
#3
☽ 𝒍𝒖𝒓𝒌𝒊𝒏𝒈 𝒊𝒏 𝒕𝒉𝒆 𝒔𝒉�...by 𝙚𝙩𝙝𝙚𝙧𝙚𝙖𝙡𝙗𝙪𝙩𝙩𝙚𝙧𝙨
(Y/N) is a twenty-something-year-old girl. At least, she thinks she is. She can't remember anything, except for the past eleven months since she mysteriously awoke in an...
You're My Pet Now {Swapfell Sans x reader}  by 0TheSilentSoul0
#4
You're My Pet Now {Swapfell Sans x...by Potato Demon
You have fallen down a hole in a mountain by accident. You don't know what to do, and then you discover you're in the underground, a kingdom of monsters, who are quite a...
Skeleton+Vampire by SoraTempezt
#5
Skeleton+Vampireby Sora Tempest
Sans Wingdings. He's a laid back chill Skeleton. He's extremely lazy and intelligent. He has a younger brother named Papyrus who is the total opposite of him Sans has a...
liaison 🩹 by TheSparkles_
#6
liaison 🩹by ᴾᴵᴺᴷ ˢᴾᴬᴿᴷᴸᴱˢ ✨
𝐍𝐢𝐠𝐡𝐭𝐦𝐚𝐫𝐞 𝐡𝐚𝐬 𝐠𝐫𝐨𝐰𝐧 𝐢𝐧𝐬𝐚𝐧𝐞. 𝐇𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐞𝐱𝐢𝐬𝐭𝐬. 𝐈𝐭 𝐜𝐚𝐮𝐬𝐞𝐬 𝐦𝐚𝐧𝐲 𝐭𝐨 𝐟𝐞𝐞𝐥 𝐞𝐦𝐩𝐭𝐲 𝐚𝐧𝐝 𝐥𝐢𝐭𝐭𝐥𝐞 𝐦𝐨𝐧𝐬�...
Undertale Sanscest Oneshots DISCONTINUED by Despair-Of-Stars
#7
Undertale Sanscest Oneshots DISCON...by Kai
Oneshot book cuz I'm bored Come one, come all, and read this book NSFW will be marked with 🍋 Fluff will be marked with ☁️ Angst will be marked with 💥 May include: Bloo...
Someone else's shoes [ Errormare ] by Fatalfawn
#8
Someone else's shoes [ Errormare ]by Fatalfawn
Nightmare,god of negativity and leader of the bad sanses comes into a sticky predicament when one of his closest allies becomes defiant,Error sans. Nightmare confronts E...
Sans-sational Venture in Tensura  by DontAskImN0body
#9
Sans-sational Venture in Tensura by ImN0body
Sans was sick of the endless resets that haunt his world, knowing full well that is the player's fault. As repeating cycle continues something odd happens at yet another...
Uwa! So Fate♫ [Sans x Frisk] by calmlypanicking
#10
Uwa! So Fate♫ [Sans x Frisk]by • × •
"what tori said, is it... true?" I paused, and I didn't say anything for about a minute. "earth to fri-" "Yes. It's true. So w...
Blueberry Sans X Chara by Hazefrost
#11
Blueberry Sans X Charaby Hazefrost
Chara is a young human who has decided to live in the Underground with her skeleton friends Papyrus and Sans. What will happen when she finds out that one of those skele...
Horror Sans X Reader(13+) by Glasses-cos
#12
Horror Sans X Reader(13+)by G//Issem
W A R N I N G ⚠️:This story may have sexual contents so you have been warned and if you dislike "SeXuAlIzInG sKeLeToNs", NSFW, Fannon(fans Invision of characte...
Back To You (AFTERDEATH/DESTRUCTIVEDEATH)  by desireburnsbrain
#13
Back To You (AFTERDEATH/DESTRUCTIV...by a bit of joy and sorrow
Oneshot! Reaper abandons Geno Only to regret it later on. Pictures or Characters doesn't belong to me.
OUR Second Hope [Toriel X Reader] by Aquilla_AC3
#14
OUR Second Hope [Toriel X Reader]by ✨🌸GatitoConDepresión🌸✨
One more, only one more soul and the monsters would finally get out of their prison and get their revenge on humanity along with their mighty king, Asgore Dreemur. Torie...
My Dear, (Nightmare x Skeleton Reader)  by ErrorSimp334
#15
My Dear, (Nightmare x Skeleton Rea...by 𝑴𝒊𝒂
They met a long time ago, they were two peas in a pod, love birds; nothing could separate them. But even with her by his side, he still bit the apple..... ~~~~~~~~~~~~~...
Error Sans x Outer Sans (Some Lemon) DISCONTINUED by Despair-Of-Stars
#16
Error Sans x Outer Sans (Some Lemo...by Kai
This is an Error Sans x Outer Sans ship story. If you don't like that then get off my page. This story contains sexual scenes and crude language. Sexual scenes will be...
Completed
AU Sanses x Reader Oneshots/short stories by Cherry-Poppins
#17
AU Sanses x Reader Oneshots/short...by »»-⍟𝙲𝚑𝚎𝚛𝚛𝚢⍟-««
Just a bunch of oneshots and short stories that I've thought of that I never could make into full stories... Feel free to suggest ideas and stuff. STAY DETERMINED!!!
Reacting to undertale ships by ThatAkutagawaKinnie
#18
Reacting to undertale shipsby StarIsEnby
With Deltarune and au's ⚠️Warning⚠️ Sanscest Characest Friskcest Papcest Fontcest(ew) Lgbtqia+ Weird shit
A Skeleton and Angel (Doctor Who x Undertale Two-Shot) by BubblyShip
#19
A Skeleton and Angel (Doctor Who x...by BubblyShip
They're here! After so many resets, so many repeats, the surface is here! Monsters are finally free, they're all happy! Well, not all of them, but some. Until, of cours...
Micky x Kermit by AcidicSoil
#20
Micky x Kermitby Alpha Male
-An interesting fanfic about two beloved childhood characters put into an abnormal and not canon world. Two griefing souls somehow find eachother. Kermit wants to feel f...