Sanscest lemons

Reads 11,374
Votes 75
Parts 6
Time 10m

Reads 11,374
Votes 75
Parts 6
Time 10m

Mature

18 aus blueberrysans boyxboy bxb dreamare dreamsans dustberry dustsans error fellsans fellswap ink inkxerror lemons mature nightmaresans redsans requests sans sanscest skeletonxskeleton swapsans undertale undertaleaus

Soooo uh... Sin.
This is sanscest. For those who don't know, it's sans x sans. They'll usually from different aus.
WARNING:This is a 18+ story. NOT for children.All Rights Reserved

Table of contents

6 parts

Content Guidelines

You may also like

Inktober but it's written stuffs by NoneSoupForYou

It's a little thing of written stuff about Undertale and it's aus. Some for a day might be short and others might be longer. It'll have angst and fluff or just complete chaos. It'll also switch from human to skeleton, just a heads up there. Also the prompts are made up by me so..yeah. Anyway, hope y'all enjoy this!

I love you a skeleTON ( sans x chubby reader) (discontinued! Sorry!) by SierraColor

Mainly what the title says. Lots of Sans, ton of SANS, Undertale sans, undefell sans, ALL THE SANS. BUT WITH A CHUBBY READER. WHHHAAAAT I KNOOOOW. READ FOR THE FLUFF THE CUTE FLUFF. (BUT IF YOU WANT SOME LEMONS HONEY, YOU GONNA HAVE TO WAIT TILL I GET THOSE IN ANOTHER BOOK. ;) ) Also, there will be a request chapter, I won't take all requests, but I will take some. ALSO CAN I JUST THANK YOU GUYS FOR 23k?!! LIKE WHAT?!! (Tbh if we get to 25k I might just continue that little one shot y'all keep requesting for me to continue to there's that.)

Art cover and other art isn't mine! I'll be doing oneshots. I'll do anything but r@pe, !nc3st, and things related. Note: AFTER "THE RUNAWAY", THERE WILL BE NO MORE FEMALE BLUE. Also, please no longer as for part 2's. It's called a ONE shot book for a reason 🥀. #1 in Bluemare on 9/10/25 #4 in Nightberry on 9/20/25 #5 in Sanscest on 9/18/25 #6 in Underswap on 7/12/25 #8 in Bluemoon on 9/10/25 #9 in Dreamtale on 8/28/25 #11 in Nightmare on 9/10/25

|Timebeats| Error!Sans x Ink!Sans by CloverStream

**OLD WRITING WARNING** "... But... Your from... That. AU." "I-I kn-oW b-ut..." "No... I'm sorry... I can't handle being friends with..." "A-M-MisTakE...?" "..."

I Found You My Dear Inkmare fanfic by Squid_1928

When Ink is exploring the au's, he stumbles upon a new au where he meets a new friend named Nightmare. The both of them create a close bond, and Nightmare explains how the villagers mistreats him and how they treasure Dream. Ink knew Dream for awhile, but Dream never mentions Nightmare. One day Nightmare had enough of the villagers and ate the apple of negativity and leaves Dreamtale empty. When Ink comes to visit Nightmare, he sees that everyone is disappeared, and so did Nightmare. Not mention Dreams new and unusual behaviour towards Ink. [All artworks in this story, including the cover, belong to me. I kindly ask that you DO NOT use them, post them, trace/edit them, or claim them as yours. It's rude and highly frowned upon. Thank you.]

Given An Unwanted Second Chance by UndertaleFanatic981

(TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You didn't want to survive. You wanted the sweet release of death. But it seemed like the universe was far too cruel to allow you even that. It took away your memories, your free will to choose whether you live or die...hell, it took the one thing in life you owned! Your own name! And now it seemed like you had to live yet another cruel life, doing things you never wanted done to others. But...at least you could do things your way. Maybe this second chance wouldn't be so bad... (Reincarnated as Nightmare Sans, but unlike other stories, you have no clue what Undertale even is) (WE REACHED NUMBER 1 IN THE UNDERTALE TAG YOOOOOOOO) (9/13/25)

This is a collection of short stories featuring the Blueberry version of Underswap Sans! Sanscest is allowed along with fluff, angst in some cases, and probably smut. Blue is only a bottom in this book, however, so please don't request any one-shots where he's a switch. Blueberry Sans is owned by the fandom as an alteration of Swap Sans. ( Cover art by Yin3359 on DeviantArt! )

Ink relocates error (kidnapped) by KarmaAkabane425

Yeah I gained an idea and stuff so things will be different even personalities and everything you can think of :)

Blue decides to leave the good side and join Nightmare's group as he is sick and tired of helping others at the cost of his own. What happens? Trigger Warning: Abuse Rape memories Neglect Kidnapped Suicidal thoughts Mental health Mental illness recovery Lemon 🍋

Inktober but it's written stuffs

It's a little thing of written stuff about Undertale and it's aus. Some for a day might be short and others might be longer. It'll have angst and fluff or just complete chaos. It'll also switch from human to skeleton, just a heads up there. Also the prompts are made up by me so..yeah. Anyway, hope y'all enjoy this!

More details