i won't let you leave me【Yandere!Sans x Reader】 - monmon - Wattpad

i won't let you leave me【Yandere!Sans x Reader】

Reads 88,457
Votes 2,432
Parts 24
Time 11h 49m

Reads 88,457
Votes 2,432
Parts 24
Time 11h 49m

alternateuniverse anxietyattacks bara frisk gaster insanity marking murder obsession overprotective papyrus sans sansxreader soulbond soulmate soulmates texttospeech undertale xreader yandere yanderesans yanderexreader

It wasn't fair. Sans had finally saved you, did it the right way without breaking any moral code. And yet, it wasn't enough. So, he decided to play by the rules the world had given him.

This was his last chance. No more resets, no more redos or loading or saves. It was all up to him.

 
...what was so wrong with consuming a couple human souls to save you?

 
*it's hard to break someone...but it's damn near impossible to put them back together*All Rights Reserved

alternateuniverse anxietyattacks bara frisk gaster insanity marking murder obsession overprotective papyrus sans sansxreader soulbond soulmate soulmates texttospeech undertale xreader yandere yanderesans yanderexreader

24 parts

Sign up to add i won't let you leave me【Yandere!Sans x Reader】 to your library and receive updates

or

Content Guidelines

You may also like

Voidless Memory. Afterdeath by Pepethehuman

(Hey my peeps! Before reading this just know that this book is really old and my FIRST fan fic. So ya it's gonna be a bit bad and confusing. So read it if you'd like to!) Geno had one thing on him mind before death, papyrus. He wants to make sure papyrus is okay, his friends are okay. He wants to end the suffering that everyone in his world endured because of a RESET that keeps putting them back in time. Back to suffering Death had always hated his job, it's not fun nor is it something he wishes to do. But it's not his choice, he must do what he was made for, without hesitation. But when he meets a determined soul from a save screen, he can't help but hesitate [COMPLETED]

Maybe One Day (Geno Sans x Reader) by LunarEclipse0823

(Absolutely beautiful cover made by @EverlovingCheeseCake aka @Ironic_Cheesecake!) What the heck? #1 in genosans? AHHHH- You are officially the ninth human to fall into the Underground, including Chara and Frisk. All you see are the remains of what used to be-the deserted buildings, the piles of dust scattered around...and a tattered red scarf you find on the ground. You pick it up, but soon find that you are not the only one left in the Underground. There is one last monster that survived, but just barely. He had escaped the death screen a long time ago, and managed to defeat Chara/Frisk, but now he has no way of leaving, and no way to relieve his suffering... That is, unless he kills you. However, once he has you in his grasp, he cannot find it within himself to kill you, an innocent. You FORGIVE him. An unsteady friendship forms from the ashes of what once was. He feels lost in the many mistakes of his past, and he can't get over them. But it's okay. You can look past them, and see the good inside of him. After all... You have the lilac soul. The soul color of FORGIVENESS. Began August, 2018. Completed September 16th, 2019. Reached 10k September 30th, 2019. Reached 20k September 17th, 2020.

✘ 'Two Connected Souls' Undertale Sans x Reader Soulmate AU by Bunny-Crystal

(DISCONTINUED) 'A young girl has just been living her life normally; until she turned thirteen--the age where you can find your soulmate. That was when this young girl and their parents--found out that her eyes not only changed colour, but she also had a tattoo/soulmark.' 'For years humans have been born with the ability to find their soulmates by eye colour. The first emotion you feel when you turn thirteen is the emotion that causes your eyes to change to your soulmate's.' 'Monsters have been able to find their soulmates by a tattoo of something that represents their soulmate. Humans, however, do not have tattoos unless they are a monster's soulmate. If this is the case, the 'soulmark' as it is referred to as, will only represent the monster soulmate and will be the single soulmark used to find the other half. A monster can find their soulmate by either of them touching the other's soulmark without having any bandage or piece of cloth in between them. Although rare, it is not uncommon for a monster to have a human for a soulmate--so what if Sans did?' WARNING!: This was a basic summary, I will be adding in a bit more information! Although this IS an 'X-Reader' fanfic, (and my first at writing one) I will be giving the reader heterochromia eyes. You will be able to choose what the colour of her right eye is--but for the sake of this story, her left eye will be green. 1st Book in a Series! AND YESS, the reader will be female. (Sorry guys!!!) I Do Not own Undertale, it is owned by Toby Fox! I do not own 'reader,' you do. (The cover art is the soulmark.)

UnderAsriel by FatalityWanes

Chara has one objective: RESET back to when they themself fell, and save Asriel from his demise. With all the Genocide Runs the now-free Frisk goes on for them, they're able to amass a big enough collection of SOULs to do exactly that. The only problem is, Asriel remembers everything that happened when he was Flowey. And he isn't too happy about it... In this new timeline, Kelsa, the SOUL of Bravery, falls into the Underground shortly after Frisk. Determined to save her only friend, Kel teams up with a mysterious flower with a face to find them and rescue them from Asriel's notorious freezing chambers. Betrayed by many, and uncertain who to trust, Kel finds herself in the midst of an iron-fist dictatorship, fighting to restore the Underground to the peaceful place it used to be. But... all is not as it seems, and there may be things about Frisk that Kel will wish she'd never discovered... Cover art by yours truly :3 This story takes place after the events of Underhappened. You may wish to read that first if you haven't already :D

To Hell and Back (Gaster x Reader) by xsfolia

"What's that look for? Are you perhaps unhappy to see me?" "Oh no. Oh no, quite the contrary, my love. I've craved to be with you for the longest time" ***** You were sure that you would have captured a Monster, at all costs. But were you sure that you would have captured not a Monster's body, but a Monster's heart? ***** The Barrier is broken • Frisk has saved the Monsters • But not all things went according to plan . . . . ...... It is renowned that Frisk fell into the Underground. They spared everyone, they had [Mercy] for everyone. In the end, they have chosen to be an ambassador for monsters, to represent them in front of all the other humans. Frisk was full of [Mercy]. But the humans weren't as merciful as them. Humans completely forgot about Monsters, and now they had to deal with what they considered an ancient enemy, despite the Monsters' friendly intentions. What will Monsters do, if they suddenly are persecuted by Humans? Will they seek help? Will they search for old friends? ... Was it reality? Or was it a true living Hell? Things always went according to plan, so why? This time, why did it have to end like this? You are a spy, working for the most powerful secret Organisation of the Human Government. Your job is to find your targets and bring them back at the Organisation, but if you have the order to, then you have to kill them. This time however...you underestimated the enemy. ***** The new plan was quite simple: bringing him back in exchange for your freedom. Falling in love with him was not part of the deal though. ********* Word count: 110.473 Cover by Earth Garden on tumblr!!

Won't You Stay My Little Honeybun? by Krembell

You were the assistant to Alphys, her co-worker tinkered on a very curious machine in the same department you worked at, incidentally that co-worker was your chosen soulmate. His name? Sans, Sans the skeleton. You didn't really spend any time with him or rather he was purposefully avoiding you, knowing that he also knew you were soulmates tethered by a soulmate connection. The only reason he allowed you to be around was mostly because of your ability to put things into your memory with excellent accuracy to remember important things like a certain blueprint or a recipe for medicinal use. You had tried multiple times to befriend Sans but everytime he looked quite uncomfortable so you stopped trying to force him into a friendly relationship. One night you had been left alone with the curious machine as you had leftover work to do and one event led to another. You wish you hadn't cut the string.

Write A Note (Sans x Female!Reader) by OreoDaSkeleton

It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N is a 22 year old girl that lives a pretty simple life. Sleep, eat, work, relax at her daily cafe, go home, sleep. Then the routine starts again. However, her routine is thrown off when she keeps running into a skeleton, supposedly named Sans. She would like to get to know him more herself, but there's one problem.. He doesn't talk. Of course, Undertale belongs to Toby Fox, not me lol

End of Time ( Sans x Reader) by BravePuppy

"Here at the end, it's just me and you. I know who you are, you remember who I am." Sans remembering you is the best that could ever happen to your broken SOUL... Maybe together you make this timeline the last one or your ways separate again.

Into Hell - Book Two of Into The Game >> (Sans X Reader) by Melody4164

(Y/N) is finally ready to go back to the monsters she holds so dearly. After about a year of mental and physical training she has finally gotten her emotions under control. But has she gone emotionless? After plugging the thumb drive with her save file on it into her computer, (Y/N) soon discovers something. In a desperate attempt to save themselves, or maybe just a way of revenge, Chara corrupted the save file. Now, all the monsters that (Y/N) befriended are out to kill her. Can (Y/N) survive? Will she defeat Chara and find a way to get her friends back to normal? Or will she instead join Chara and erase everything? Find out in Into Hell. Once again I'm making the gender pronouns she because it makes it so much easier to write, which means quicker updates. I'm really sorry if your a male.

Hope Comes With Patience (Discontinued) by KikiKaori

With you constantly fighting to get by whether it's dealing a sleazy boss, a landlord that apparently hates your guts or struggling in the ghetto parts of town; you find yourself getting fed up with it all. One night to drink away your misery sounds like a good idea.. right? You honestly weren't surprised to find that trouble was hot on your heels once again or in this case, well, okay it was your fault this time. Who knew you, someone who was convinced that you didn't need anyone, was willing to put aside your hermit ways to protect two heavily abused Bittybone. With a target now on your back, it's up to you to figure out how to get out this mess and keep your two new companions safe.

Fall of the Empire [ Sans x Reader ] by morrow-

You weren't quite sure what you were. As time progressed, you had been called many things. Hope, future, a new beginning. You weren't quite sure why they called you those things, for each passing day you say locked in a cell, waiting for the freedom that would never come. You weren't alone. You grew fond of two other experiments whom you nicknamed Sans and Papyrus. The routines seemed to grow normal, coma-induced trances, painful tests... And then nothing... One day, the pain stops coming. Slowly, the three of you venture outside of the prison and discover that there is a world beyond the cell.

Into The Game >> (Sans X Reader) Undertale FanFiction by Melody4164

It was just a normal Saturday. (Y/N) was playing Undertale for the millionth time. She was obsessed. (Y/N) had played all of the routes. True Pacifist, No Mercy/Genocide, Neutral. She experimented with killing certain characters doing different things. Then, as (Y/N) started a new game, she felt a falling sensation, as if she just fell out of her chair. She blacked out soon after. When she woke up, she was lying on a bed of golden flowers. She knew this place. (Y/N) was in the game. She had taken the place of Frisk and was in the Underground. •Disclaimer I do not own Undertale. It belongs to Toby Fox. I do not own you. You own yourself. I do not own the cover or any of the pictures that will show up in this book• *If you're reading this as a guy please just change the pronouns to he/him/his. I find if a lot easier to just put female pronouns. Thanks! :3 *

His Unfazed Determination~ XTale Frisk x reader by Spooky_scary_Sam

[art used for cover by Rua Shio! All rights to characters to their creators! Gender neutral!] "You underestimated me, I'm determined too!" "You don't understand, I don't want you to die out there and for it to be HIS fault!" ----- Y/n had been abandoned in the universe they lived in, no one cared for them. One day, a skeleton like the Sans you knew, though dressed differently and possessing a more kind demeanor brought a tall skeleton and two humans to the universe you lived in. Those humans and monsters had changed your life forever. But you would soon figure out you weren't fully human, and the universe you lived in was anything but perfect...

New Purpose (US!Papyrus x Female!Reader) by OreoDaSkeleton

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful, absolutely innocent skeleton, smiling despite any given situation. However, Y/N finds out that Blue's wearing a different attitude outside of work. He's exhausted and working himself to the bone, using all he earns to pay for countless medical treatments and bills. He claims that they aren't for him, but keeps silent and won't give more details. Who's bills is Sans paying for and could Y/N find a way to help? **WARNING- Small Depressive episodes will be presented in this book. Read at your own consent.** Hello! It's Writer~San! None of the art/undertale au is mine, but the writing 100% is! Enjoy!!!

I want Her (Underswap!Sans x Shy!Reader) by GamerQueen2002

Yandere!Underswap!Sans x Shy!Reader And some Papyrus x reader -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- He was so sweet, so innocent. All he loved doing was cooking tacos, listen to his brothers puns, and try to be friends with everyone. Then you're pushed down a hole and end up in this strange new underground. After seeing you, his sanity breaks. Instead of making tacos, he loves hearing bones pop. Instead of listening to his brothers jokes, he bathes in blood. Instead of making friends with everyone, he kills them. -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- "You can't escape. Not now. Not ever." -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Sequel to ending D: Silently Sleeping (Underswap!Papyrus x reader) Sequel 2: A New Life A/N edit: Apparently, I like this word cute. Oh, and, under a bunch of editing. A/N edit two: OH YEAH, and very cliche! XD

Daybreak [ Error!Sans x Reader ] by morrow-

Gone. In a single moment, in the blink of an eye, everything you have ever known or cared for is eradicated. Hopes and dreams, traditions and stories that date back centuries have been erased without thought or care. Nothing matters and no one will ever live again to pass on the memories and stories of what was lost. Except you. You are the anomaly, the glitch that survived when all else could not. When your universe was destroyed, you found yourself stranded, alone, afraid in a white world without end. But there's little time to rest when you discover that your universe was merely a grain of sand on a much bigger ocean. Whole other worlds thrive in different plains of existence, and they're all going to war. In a desperate power-struggle for the upper hand, you find yourself an unlikely ally. The future seems certain, chaos will win and the universe will be plunged forever into violence and bloodshed. And it will take a lot more than a miracle to win.

Chainsmoker [ Gaster!Sans x Reader ] by morrow-

Routine. The entirety of every living thing is dominated by it, human or monster. Everything HAS to be the same. It was in this that you were the exception. For you everything was new, every time line a detailed altered in order to satisfy your sadistic desire for a new ending, whether it be only a few details of dialogue altered or something else entirely. Monsters you once considered family you now butcher and slaughter without a second thought, after all, that's what the Reset is there for, right? And all at once it stops. Your small hold over the Underground is ripped away from you and you are thrown into a dying timeline, monsterkind's final attempt at self-preservation. You're alone, completely and utterly alone. Except one. And he has a bone to pick with you.

A Skeleton's Hope (Undertale AU's x Reader) DISCONTINUED/BEING REWRITTEN by Just_Vibing_Man

Sans and Papyrus were your best friends until randomly they just cut off all contact with you. This went for everyone else in your life so it didn't really hurt that much when they did. The only question is why they didn't do it sooner. So after two years of loneliness, what was originally a drop off turned into a hospital trip, a broken leg, and your once best friends now homeless. What should be happening is them owing you a thanks for rescuing their so called, "Cousins" from a fire. Yet here you are offering them a place to stay, at your big ass mansion for the next eight months. So now you live with the people who abandoned you, along with their so called "family" who by the way don't really like you because you're a mage, but it's barely relevant to the plot so - What could possibly go wrong? Cover by EverLovingCheeseCake

Darkness' Eternal Bride (Gaster x Reader) by xsfolia

WARNING: THIS CONTAINS HIGHLY MATURE CONTENT (BLOOD, VIOLENCE) READ AT YOUR OWN RISK Money can change a lot of things. It can even change your destiny. Plunge yourself into a life of romance, science, disappearance and misunderstanding. ________________ "When you get better, I'd like to kiss you" ... Gaster only wanted to conduct an experiment. He surely didn't want his life to be taken over by weird feelings. He also wanted the only thing he couldn't really have. He wanted you. What will he obtain? Will his research finally be completed? Or will he have to start another one? As for you, will you be able to move on from the past? Words count: 81.390 Also contains mentions of nsfw [Rankings: #1 in #gaster (08/21/2022), #5 in #xreader (08/21/2022)]

Judgement Hall • ~• Sans x Reader by WildAnimal999

#40- TobyFox 12-8-18 #1 JudgementHall 3-21-19 Discontinued. I stood before Sans, he'd fallen asleep. Tears were dripping down my face as I held the knife high above my head.My hand was shaking, I didn't want to kill him, I never wanted to kill anyone, but Chara, that brat, she'd killed everyone, not me. And just before Sans fell asleep, she left my body and I was sucked in. She wanted ME to KILL SANS. At this point, my whole body was shaking. I could hear Chara saying, "Come on, Y.N, kill that smiley ol' trash bag. He's nothing compared to US. NOBODY CAN STOP US NOW!!!! LETS END THIS, HERE AND-""NO!!!!!" I screamed in rage. Sans still didnt wake up. This starts off as a genocide run but then blossoms into so much more. I dont own the cover or any of the Undertale characters, thoose belong to Toby Fox, the creator of Undertale.

You may also like

Slide 1 of 20

Voidless Memory. Afterdeath cover

Maybe One Day (Geno Sans x Reader) cover

✘ 'Two Connected Souls' Undertale Sans x Reader Soulmate AU cover

UnderAsriel cover

To Hell and Back (Gaster x Reader) cover

Won't You Stay My Little Honeybun? cover

Write A Note (Sans x Female!Reader) cover

End of Time ( Sans x Reader) cover

Into Hell - Book Two of Into The Game >> (Sans X Reader) cover

Hope Comes With Patience (Discontinued) cover

Fall of the Empire [ Sans x Reader ] cover

Into The Game >> (Sans X Reader) Undertale FanFiction cover

His Unfazed Determination~ XTale Frisk x reader cover

New Purpose (US!Papyrus x Female!Reader) cover

I want Her (Underswap!Sans x Shy!Reader) cover

Daybreak [ Error!Sans x Reader ] cover

Chainsmoker [ Gaster!Sans x Reader ] cover

A Skeleton's Hope (Undertale AU's x Reader) DISCONTINUED/BEING REWRITTEN cover

Darkness' Eternal Bride (Gaster x Reader) cover

Judgement Hall • ~• Sans x Reader cover

Voidless Memory. Afterdeath

(Hey my peeps! Before reading this just know that this book is really old and my FIRST fan fic. So ya it's gonna be a bit bad and confusing. So read it if you'd like to!) Geno had one thing on him mind before death, papyrus. He wants to make sure papyrus is okay, his friends are okay. He wants to end the suffering that everyone in his world endured because of a RESET that keeps putting them back in time. Back to suffering Death had always hated his job, it's not fun nor is it something he wishes to do. But it's not his choice, he must do what he was made for, without hesitation. But when he meets a determined soul from a save screen, he can't help but hesitate [COMPLETED]