#2
My Two Masters (UF!Papyrus x Skele...від ~Oreo~
Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another d...
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#3
Big Sister Undyneвід Moonstone_Ccino
Underfell is a dark world with the major rule of kill or be killed. Even though children are suppose to be secluded from this rule, that doesn't stop monsters from hurti...
#4
The Return(A Flowerfell Sequel)від Frisk
3 years had passed since Frisk sacrificed herself to free the monsters.
Now humans and monsters live together on the surface, though some monsters preferred staying in...
#5
'Being A Pet All Over Again' Under...від noé
[Disclaimer that this book is very old nd poorly written, please keep that in mind!]
Sequel to 'Shy Pet' so if you haven't read that, I suggest you do!
After Y/n had die...
#6
Living In Hell. {Depressed Underfe...від Chey Kennedy
Underfell, a place where hell shows no bounds, and its kill, or be killed. Sans, a weak and looked down upon monster, suffers in a town, a place called Snowdin. But noth...
#7
HoneyMustard {human ver.}від BluePerry
I've been reading plenty of honeymustard fanfic and I wanted to start my own? no one is going to see this but eh. I'm currently writing the first part at 4am so it'll pr...
#8
New Life {Bittybones AU Sans x Rea...від not active anymore srry
They were hurt. They never really felt love and care. What happens to them when their old abusive owner decides to abandon them in a cold night, when (Y/N) finds them? T...
#9
Undertale/Au's x reader 4від Artsy is bored.
Here's the fourth book! thank you all for all the love and nice comments on the first, second, and third book!
NO LEMONS! FLUFF AND YANDERE ONLY!
Mostly Au sans and pa...
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#10
Mosaic [Undertale AUs]від DeadEnDead
To escape a timeline ruined by a cruel queen, Sans uses a machine to find somewhere safer for his younger sibling. Unfortunately, the machine can only take one, leaving...
#11
Christmas Party AU (undertale au's...від OlinArtz
This is inspired by the one and only _Sansational_Sans_
The original concept goes to _Sansational_Sans_ and the Christmas Party AU does not belong to me!
Gender neutral...
#12
Fell Papyrus X Readerвід Sans and Papyrus
You have Fallen into the underground. You made it Past a murderer Goat called Torial. You seen two skeletons One Tall Called Papyrus and one small called Sans. Now you a...
#13
Restoration Soul: Who The Mischief...від MikkiMausu
Eight multiverses
Eight soul pieces
Eight gods/goddess
And
One girl
....................................................................
A young girl dies in her reality...
#15
"Wet box"від Apollo
alright so like..... basically sans finds a box full of bitties and he decideds to bring 'em home...heh, heh, heh
(The story starts in the middle of the night after that...
#17
Truth or Dare Underverse (Lol disc...від tRaSh
!!! WARNING THIS BOOK IS DISCONTINUED!! WE ( Aurorawe and tRaSh) HAVE A NEW ASKBOOK! IF YOU'D LIKE TO ASK OR DARE CHARACTERS PLEASE GO TO THAT BOOK CALLED "Ask or D...
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#19
Undertale AU Preferencesвід Ultimate Virgin
just some headcanons/ideas of how I think the different AU sanses and papyruses would act in a romantic situation :>