1 - 20 of 61 Works in Obsessive Sans (Undertale)
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Seeing a murder in an alleyway was the last thing Riley ever thought she’d see happening in her small town WestonVill. Having the murder disappear over night and the murders move in across from her was also something she’d never expect to happen. But here Riley Dottingham was, being pursued by two mentally unstable skeletons.
If she could only figure out what they want from her.
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Sans wasn’t doing anything wrong.
He just wanted to PROTECT you.
Even if it meant being…. a little forceful.
Series
- Part 1 of Requests
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°*⁀➷ YANDERE OCTOBER 2025 ; DAY 2 — DAYDREAMER ┆彡
Then Killer starts imagining.
He imagines running away from the big boss and finding his way back to you. Then you'd nurse him all over again, and he'd flirt with you this time, letting his intentions be known.
Or maybe he finally gets rid of Nightmare. Free himself, perhaps the other Sanses too if they weren't so fucking miserable, but alas, free.
Series
- Part 2 of Yandere October 2025
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°*⁀➷ YANDERE OCTOBER 2025 ; DAY 1 — LOVE LANGUAGE ┆彡
Quality time. Quality time?
You don't see him as much anymore. Which is weird. There was a point where he could barely be apart from you.
He's disappearing to stars know where, leaving you and Papyrus for hours long. Sometimes even days. Unannounced. Unspoken.
Series
- Part 1 of Yandere October 2025
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Sans finds his SOULmate while he's in heat, terrible luck for both you and Sans. He then proceeds to fuck everything up even worse by threatening to kidnap you if you don't start dating him.
Can you make this relationship work?
Or will you find some way out of this?Series
- Part 1 of Impatient
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Frisk Starling should've been used to cases like these. After all, it was her duty to investigate. Give the victims their voice back, catch the sick freak who did it and give the broken families the justice she couldn’t have for herself.
That is until a string of murders throughout the county begin to appear. Women used like toys, mutilated and disposed of for the cops and journalists to find with only the tiniest slivers of useless evidence and the glaring fact that all the women...
Every…
Single…
One…
Look almost exactly like her… Frisk begins to wonder if maybe… the monster she's hunting down has turned her into the hunted.
And God, does she make the most exhilarating, delicious prey yet…
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Frisk likes to go to Mount Ebott every day, but her routine changes when a monster moves into the ranger's station near her house.
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Unfortunately, Lust is delusional and going off the deal.
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You're Never Ever Ever Getting Rid Of Me
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He was so wonderful, so sweet at first. How did it get this bad?
The breakup was harsh on him, you didn't doubt it. But you had to get away. Moving to the city of Ebbot a few hours away may not have been the best decision, but you needed to get away.
Away from him.
You used to love him.
He loves you too much. -
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First, you traveled through the universe.
You did not expect to be crossing the multiverse and meet the same skeletons you know. But that's the thing; they are all different.
Deadly. Violent. Destructive. Feared. Hated.
They are murderers.
Whatever it takes, you will find your way back home.
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𝐌𝐚𝐝𝐨𝐧𝐧𝐚, 𝐌𝐚𝐧𝐮𝐦𝐢𝐭𝐭𝐞𝐫
he watched you grow over the years
you were to be untainted, winter's daughter
cold and spiteful, beautiful and pale;
or, the cold simply wanted the warmth the hands of the dead offered.
Series
- Part 1 of I. the sefirot of troubles.
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— The most dangerous people are those with nothing to lose —
A true villain has to be ruthless, evil, and have a goal.
A villain has to do anything they can to obtain their goal.And you, who has lost everything, and now will do anything to get it back.
You who has been chosen by the Villain System, nothing to lose, yet everything to gain. -
TELL ME THAT YOURE MORE THAN A SICK FASCINATION by spitefully_perfect
Fandoms: Undertale (Video Game)
20 Dec 2024
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Cold, cold, cold.
But you wake up warm. Warm and in the den of a monster that seems determined to keep you for himself, but it doesn't seem like the other monsters on this island have any desire to let that stay that way.
There's definitely something wrong here, though. After all, why won't they let you go into the heart of the forest?
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Basically a "get washed up on a remote island and end up surrounded by feral skeletons" story but with my favorite boys
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(T/n) is a renowned archaeologist, and researcher. He was on a ship with his research team heading back to the USA, but midway through, their ship encountered an island, and he has no idea how it ended up wrecked and him being the sole survivor.
He would probably have been hysterical if he hadn't encountered living skeletons, which he decided to make his research subjects. But amidst all this, can someone explain to him what the heck an alpha is and why his research subjects seem so cooperative with his investigation?
Maybe, a bit too cooperative.
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(T/n) es un arqueólogo, historiador e investigador reconocido. Estaba en un barco con su equipo de investigación, pero en medio camino, su barco se topo con una isla y no tiene idea de como termino su barco destrozado y él mismo siendo el ultimo sobreviviente.Probablemente habría estado histérico de no haberse encontrado con esqueletos vivientes de los cuales decidió hacer su objetivo de investigación. Pero a todo esto, ¿alguien puede explicarle que carajos es un Alfa y por que sus objetivos de investigación se ven tan cooperativos?
Tal vez, un poco demasiado cooperativos.
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This year we're doing Yandere October 2024!!
Following @ozzgin on Tumblr's prompt list with any UTMV Sans or Papyrus.Here, we mostly have drabbles, some longer than the others. A specific yandere prompt for each day and each character!
Content Warning: YANDERE. If you do not enjoy reading that kind of horror, please scroll.
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After an incident at the world-famous Ebott Aquarium, you find yourself placed on a team of staff dedicated to the care of the prize exhibits at the facility; three notoriously aggressive skeleton siren monsters captured in the name of 'research'. An orca with a disturbing record of finding new ways to attempt to drown his keepers, a shark who's excellent at removing whatever stray hands come his way, and a deep-sea octopus whose past (and body count) are hidden behind endless stacks of legal papers. Despite their pattern of brutally murdering their ever-changing team of keepers, they all seem to immediately take a shine to you- a worryingly bright shine. A shine that won't go away, a shine that starts to unnerve you.
However, the longer you work there, the more you see the inner workings of Ebott Aquarium. The more you realise the sirens you're 'caring for' aren't dumb beasts, they're deeply intelligent... they aren't mindlessly aggressive, they've gone insane, locked in those tiny glass cages.
... The more you interact with the sirens... the more you realise their murderous aggression might not be all that misplaced.
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You wake up in an unfamiliar world, an unfamiliar situation, and an unfamiliar identity.
For whatever reason, you are the princess of a kingdom with dutiful responsibilities to be attained. Everything else, you somehow know and remember, but when it comes to you? ...There is utterly nothing to recall.
And then you meet the crown prince. Your soon-to-be fiancé. An adorable, charming skeleton who seems to be the key to your horrific past.
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BELLADONNA (old, being rewritten!) by spitefully_perfect
Fandoms: Undertale (Video Game)
18 Apr 2024
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There’s something so humbling about the ocean- maybe it’s the open expanse that makes you feel so small, or maybe it's the knowledge that otherworldly life exists in its depths. Depths humans were never meant to see.
Depths from which people found the most unusual creatures, and put them on display for all to see, in fancy aquariums of only the highest quality for their aquatic menagerie.
That's how you ended up at the aquarium.
Sirens.
The Ebbot aquarium had sirens.
And who were you not to be curious?REWRITTEN !! New fic focuses more on Lust but don’t worry, tge boys here will show up eventually!
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Error is unwillingly fascinated with a human. He constantly watched her every move, day or night. Eventually, it lead to his obsession.
Then he watches you break his human's fragile heart.
Honestly. The last thing both of you'd expect is for Error to endlessly fall for you instead.
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The faerie's quite a fan of the hermit in faer territory. They want to welcome you home. You just haven't realized the big house you sleep at will not remain your home, now come on dear, it's time to come home.