1 - 20 of 106 Works in Reader is an Alternate Universe Sans (Undertale)
Navigation
Listing Works
-
Tags
Summary
You my dear reader are transported in your own au as sans then when you have just come into accepting life your comfort was washed away by one tiny mistake
You have transported to one of the fanfics or at least inspired by it you have read almost daily it was the typical ani harem fanfic were a human called Y/n is a very broke collage student
And then when they get an offer from their childhood friend to live with their numerous roommates that are more like actual boyfriends then roommates
the childhood friend will most likely spread rumors about Y/n which will cause the skeletons to dislike them then end up loving them in the end
But with you there things will change maybe help Y/n along the way or sabatoge her or maybe even matchmake her to another person!
Read and find out what happens to our dear reader
-
Raki Book by Rakilotika
Fandoms: Undertale (Video Game), Dream SMP, Twisted-Wonderland (Video Game), Deltarune (Video Game), QSMP | Quackity SMP
13 Oct 2025
Tags
Summary
Where I throw my ideas at people and wait for them to write a book about it.
-
Tags
Summary
The whiteness greeted you as you woke up again. It felt almost suffocating, especially when the only other people with you didn't exactly look or act normal. You just wanted them to emote, even a little bit.
All you wanted was to not be alone but no. You were reborn as Ink after you died in a lonely ditch. Now you have to navigate the vast Multiverse with your knoweledge of your last life. As you get friends and foes alike, you notice that not everything you know is trustworthy. Especially when you're a little lost skeleton with questionable ability to feel.
After all, anything could happen in a place this big.
-
Tags
Summary
You lived an ordinary life, going with the flow, until at one point, you stopped living.
..
.
For some reason you are alive.
Hmm, not that you're complaining, but the last time you checked, you were definitely dead. And you definitely weren't a skeleton.-
A man is reborn into a Papyrus of an alternate universe, which, in fact, he created himself. Oh, if only it weren't for those memory lapses...
-
Tags
Summary
Sans did not remember his previous name, only that he had been human. Rebirth in Undertale was novel, but he adapted, until he realized that the universe he was in was not the original one.
Unfortunately, it was too late when the machine took him to another universe, into a room full of skeletons.
——————————————————————————————
Sans no recordaba su nombre anterior, solo haber sido un humano. Renacer en Undertale fue una novedad, pero se adaptó, hasta que cayó en cuenta de que el universo en el que estaba no era el original.Lamentablemente, ya era tarde cuando la máquina lo llevo a otro universo en un cuarto lleno de esqueletos.
Nota: Sé que suena como tragedia, pero en realidad es una historia bastante esponjosa de curación, o al menos eso intento. Nuestro protagonista tiene mucho trauma y lo va a sanar en una mansión llena de esqueletos incómodos
-
Tags
Summary
You were quiet for a long moment. “i’m supposed to be dead,” you told the skeleton.
“… you’re not,” he replied, after pausing for only a second. “there’s no supposed-to with you. you were in the anti-void, not an au. you nearly died, but i fixed you.” His voice was quieter than before, and his head was slightly tilted, like a curious dog. “i don’t normally bother to do that.”
“then why did you?” The words hurt in your mouth instead of your throat. It felt like carbonation below your tongue, and it took concentration to keep that static from leaking into your words. You weren’t used to talking. But this was important.
“why’d i fix you?” The skeleton paused, expression going blank for half a second, gaze flitting down to his scarf. “oh!”
The corners of his mouth tugged up again. “because i want a little brother of my own, of course!”
xxx
You used to be human, before what you called the Blank. You were a teenager, and you liked dogs and the sun and couldn’t remember much more than that. Then you were made into something else.
After your rescue, you try to adjust to living again - and attempt to understand why so many weird skeletons keep trying to adopt you.
-
Tags
Summary
You really should try living a little, but it's kind of hard when you're literally Death. The other immortals might be your best shot at happiness, even if it'll probably look really bad to outsiders that the three dark sides of the multiverse's balances are hanging out.
-
Tags
Summary
You were a normal human. You went to college, you had a life, friends, family, etc. Apparently, the void didn’t care much for happy endings, and you find yourself strapped to a table in an underground lab.
It’s fine, you have plot armor.
———————————
Or, you get sucked into the void and your soul is placed in the body of eight-year-old Sans.
Arc 1: Heritage (1-7)
Arc 2: Hell (8-10)
Arc 3: Home (11-45)
Arc 4: Heart (46-59)
Arc 5: Hostage (60-?)Series
- Part 1 of How To Be A Human Being
- Part 1 of Hounds Of Love
- Part 1 of I/Me/Myself
-
Santuarytale (Vers. English) by Harmony_of_Endless (RynoxPolux27)
Fandoms: Undertale (Video Game), Multi-Fandom, Assassin's Creed - All Media Types
19 Sep 2025
Tags
Summary
Sanctuary
(From lat.) Sanctuarium.1. A fundamental place that offers security, protection, or refuge from danger, persecution, pain, or harmful influences.
2. The central idea is that of a space where one is safe and often finds peace or comfort. Furthermore, it provides asylum and care to those who need it.
3. A sacred place dedicated to a deity, religious object, or venerated figure.
4. A space where one can find calm, serenity, and isolation from the stress, noise, or disturbances of the outside world.Series
-
Santuarytale by Harmony_of_Endless (RynoxPolux27)
Fandoms: Undertale (Video Game), Assassin's Creed - All Media Types, Multi-Fandom
19 Sep 2025
Tags
Summary
Santuario
(Del lat.) Sanctuarium.1. Un lugar fundamental que ofrece seguridad, protección o refugio contra el peligro, la persecución, el dolor o las influencias dañinas.
2. La idea central es la de un espacio donde se está a salvo y, a menudo, se encuentra paz o consuelo. Además, proporciona asilo y cuidado a aquellos que lo necesitan.
3. Lugar sagrado dedicado a una deidad, objeto religioso o figura venerada.
4. Un espacio donde se puede encontrar calma, serenidad y aislamiento del estrés, el ruido o las perturbaciones del mundo exterior.
Series
- Part 2 of Libercordia
- Part 2 of Senderos fragmentados de Harmony
-
Tags
Summary
Dust never wanted happy endings, he never needed them either. But after he lost his sense of purpose, is there hope? Maybe the infinite loops of resets and killing everyone dragged him into that conclusion. Maybe he could live in a sense of peace and tranquility. But the multiverse has other plans. The poor guy's torture of resets never ended, even after being dragged out of his AU. Essentially nobody remembers this. Nightmare thinks he's delusional and his 'friends' already know how crazy he is, so there's no point in asking really. He swears something bigger is going on here, and it's dragging him INSANE.
Maybe the guardians of creation and destruction have to do with this...
~ (i upload once every other week + READ CHAPTER 1 NOTE BEFORE READING!!!) -
Tags
Summary
"You limp towards the door, every step is agony and you feel exhausted, your vision goes blurry once more but you continue to the door, determined."
Readers will get to vote on this story, choices will be displayed at the end of the chapter, more details in Author's note.
"There are no happy endings, because nothing ever ends" - The Last Unicorn (1982)
-
Tags
Summary
One day, or is it night, you wake inside a basement with a familiar skeleton staring down at you in shock. To your surprise, you know him, and the others that live within the complex. Each skeleton has a secret. Including you.
How would they react if they learned they are nothing more than fandom created characters from a beloved game? What would they do if they ever learned you were once a human?
-
Tags
Summary
࿐ ࿔*:・゚ “ ᵈᵒⁿ'ᵗ ʸᵒᵘ ᵏⁿᵒʷ ʰᵒʷ ˢʷᵉᵉᵗ ⁱᵗ ᵗᵃˢᵗᵉˢ, ⁿᵒʷ ᵗʰᵃᵗ ᴵ'ᵐ ʷⁱᵗʰᵒᵘᵗ ʸᵒᵘ?…”
𝗜𝗡 𝗪𝗛𝗜𝗖𝗛. you let out your last breath, your baby brother eerily still in your arms, the only proof that you died trying to protect him.
your actions did not go unnoticed.
︶︶︶︶︶︶︶︶︶︶︶︶︶︶︶
Arc 1: Falling Behind (1 - ??) -
Tags
Summary
You wake up as someone who has nothing left to lose, stranded in an Underground that's slowly dwindling in life. Despite being capable of crossing the barrier, you don't dare to, when you have a personal endeavor and promise in mind.
It's a different story when you're transported into an ideal alternate timeline, where your oath is rendered void. Here, with your various counterparts, you don't appreciate reliving the life of a prisoner-- especially when it's enforced by a reflection of what your Sans could've been.
(OR: In a pacifist timeline, an alternate Sans possessing a human soul appears, risking the newly established peace between humans and monsters. If Classic Sans had hair, he's pretty sure he'd still end up bald.)
[A Various x Sans!Reader fic.]
Series
- Part 1 of parallax error
-
Tags
Summary
You had Never wished for this,
But now here you stand,“Shit! Is he bleedin? Classic! Get your ass down here!.. what the Hell?!”
you awoke with a blinding headache that seemed to rattle your bones,
, …ꜰɪʟᴇ ᴄᴏʀʀᴜᴘᴛᴇᴅ-
—-
This is a re-written Fic of mine, -
Tags
Summary
One of the last things you were ever expecting to happen to you after you died was to wake up in the body of a skeleton.
The same skeleton that you’ve been obsessed with since high school.
The biggest issue is that it's the horny Edition.
All you got to survive is a smell of burnt apple pie, Your few memories of Underlust, and a will to survive for long enough to escape horny jail.
Let's see where this takes you.
.
“The sixth stirs.”
Series
-
Kiss Me, Kill Me (And a Secret Third Option) by Embrace_the_Deep (DefinitelyNotABee)
Fandoms: Undertale (Video Game)
28 Jul 2025
Tags
Summary
What had Ink tried calling him again?
Someone named Killer?
As fitting as that name would have been for the previous owner of his body, he clearly remembered that he had been referred to as 'Sans' in the blurred bits of memories.
Maybe he was being mistaken for someone else.
He hopes he never meets this actual 'Killer', but even if they were some sort of shady person- skeleton- thing, that doesn't excuse kidnapping a stranger and chaining them to the floor of your home after nearly killing them!
With the most unimpressed expression he could muster, Quill forced the aching phalanges of his right hand into a wrist-up fist, and extended his middle finger.i.e. A self-indulgent crack-treated-seriously fic featuring isekai!Killer vs. the Multiverse. Enjoy!
Series
- Part 1 of The Third Secret Option
-
Tags
Summary
It was 23XX.
The endless expanse of the wartorn, darkened world left nothing in the aftermath. As the (presumably) only two individuals that walk on this world, you and Papyrus kept trudging on. It was you two against the world, after all. The undead - both human and monster alike - kept things ... interesting, but in a void-like world, as long as you had your brother, you were okay. Definitely.
That is, until a sudden break in reality - a tear from a fountain. You didn't realize triggering it would send you to another universe? Timeline? All of this - what is this? What is happening?
(This isn't a Sans/Sans, Papyrus/Papyrus, and Sans/Papyrus story!)
-
Tags
Summary
Getting up in the mornings is never an easy thing. Getting up in the morning to discover that you have taken over the body of Error isn't any easier, either. Now you are trapped in the Anti-Void with a constant stream of voices, confused, excited, and just a little hungry.
----
Just some short warm-ups that I have written. I might flesh them out into a proper story one day.