You aren't very happy.
Alphys has explained a few things to you, things you'd rather not think about. Each of your friends has gotten an additional power, which would aid them in their conquest. Frisk was a gentle soul, prone to flirting and indirect action; thus, their power involved a sort of hypnosis.
And Papyrus? Well, his power was making someone so sick, they couldn't move. Admittedly, the idea had seemed funny to you, when Alphys first told you. Not so much now.
Napstablook is on the floor, retching quietly and squirming in discomfort. Flowey is in a hanging pot, his own vomit acting as a fertilizer. Chara is somewhere in the house - you can hear her yells of rage and pain. You're sitting at the dining table, shifting around and looking for a way of escape. Papyrus is singing some song about you; you don't pay it much mind. His apron is covered in red, too dark and thin to be marinara. You're fairly certain this substance is in the spaghetti he's making. You really don't want to eat that. "(Y/N)!" Papyrus yells in your ear.
You jump in surprise, nearly falling off your seat. Papyrus sets the food on the table and uses his magic to catch you, your nose an inch or so from the ground. You're only in his orange hold for a few seconds, but it feels like an eternity. You can compare it to being underwater, where everything is muted and you're alone with your thoughts. As you're there, you ponder your situation. Papyrus could kill you, if he really wanted. It was a safe guess the spaghetti was laced with some form of drug, one that would knock you out. You didn't have much of a defense against this, so you'll have to distract him for as long as possible. That was a pain, really. You liked Papyrus, you really did. . . This whole 'Love Me Or I'll Kill The People You Care About' thing was far past your boundary, though. You blink slowly as you're released, wavering back and forth. A plate of spaghetti is in front of you, but something is off. "Papyrus," you mumble, hesitantly picking up your fork, "what is this?"
He's smiling, much like he does when someone called him cool. "IT'S SPAGHETTI, YOU SILLY HUMAN," he shouts. "THE GREAT PAPYRUS HAS MADE IT JUST FOR YOU!" You cock a brow, but decide to poke at it. You've already noticed the odd, pale color of the noodles, and the dark red of the sauce. As you jab the thing, you notice the noodles are far longer than they should be, and oddly shaped. They're thicker than normal - no, they're hollowed in the center. Some unknown liquid, possibly the sauce, leaked out with ever stab. The smell of garlic is thick, but you smell past that. It takes you a moment to link the smell with a name; metallic, like copper, like blood.
You narrow your eyes at the meal, stomach turning for a reason you can't quite name. Papyrus looks nervous, shifty, like he doesn't care for the fact you're looking into his cooking. "May I ask what the ingredients are?" You say slowly. You're afraid, now, of the unknown, of him.
"WELL, IT'S SPAGHETTI!" He says, not meeting your eyes. You wait patiently for him to continue, which he does. "THE NOODLES ARE INTESTINES OF THOSE LESSER THAN YOU, AND THE SAUCE IS THEIR BLOOD."
Napstablook throws up again, and you wish you could do the same. "O-oh," you choke out, face going pale. You're heart thuds sickly in your chest, and you're left with the thought that you are responsible for deaths. "Wh-who's?" You look up at Papyrus.
He's smiling, one eye a bright orange. You'll have to be careful not to upset him, you tell yourself, but you need this information first.
"JUST SOME MONSTERS, THEY DON'T MATTER," Papyrus quickly says, obviously noticing your discomfort.
"That's sick," you whisper, more to yourself then to him. You notice the eye grows brighter, and you rush to recover. "I mean, I hope they weren't sick," you say quickly, digging fingernails into fragile skin.
Papyrus hums, pushing the plate towards you. "DO NOT WORRY, MY DEAR (Y/N), THE GREAT PAPYRUS HAD MADE SURE THEY WERE HEALTHY." This is a small comfort.
"P-payrus," you say slowly, trying to keep the fear out of your voice, "what if I'm n-not hungry?"
Papyrus scowls for a moment, eye dangerously bright, before it fades and he smiles. "THEN I WOULD TELL YOU IT WAS A TOKEN OF MY LOVE, AND YOU'D EAT IT."
Yeah. Sure. Thanks, Pappy.
It looks like you don't have a choice in this. With a trembling hand, you gather some 'spaghetti' onto your fork. You're shaking so bad, you drop the fork onto your (C/O/C) shirt. Papyrus grabs a napkin and is dabbing at your clothes before you can say 'oh fuck'.
"SILLY HUMAN," Papyrus says cheerfully, "I DIDN'T KNOW YOU NEEDED HELP TO EAT!"
He grabs the fork and spools some pasta onto it. It's then you realize there are meatballs. . . How had you not noticed this sooner? Papyrus has one on the end of the fork, it's unblinking brown gaze sending one message: run.
You can't take it anymore. You scream, falling off your seat again and scrambling to the other end of the kitchen. The symphony of moans isn't helping your frayed nerves, here.
Papyrus frowns, looking dully at the eye. "WHAT IS WRONG? DID I NOT TELL YOU THERE WAS MEAT? DO YOU NOT LIKE MEAT?" He sounded worried, almost scared you'd be upset.
"No, Papyrus, I don't!" You yell, squeezing yourself more into the corner - a part of you wonders if he doesn't count the 'noodles' as meat, but that's better left unanswered. He pouts, and begins sifting through the vile concoction, pulling out the eyes as he went. You gag, sliding down the wall. Tears are spilling down your cheeks, but you don't have it in you to care.
This seems to be Flowey's limit.
He vomits, shooting his vines out and wrapping them around the skeleton. With an angry yell, Flowey flings Papyrus out the window, immediately creating an impenetrable thicket.
It's quiet after that. You, Napstablook, and Flowey are all panting, stomachs roiling in anger and confusion. Chara comes into the kitchen, vomit staining her shirt and nose bleeding slightly. She sits down next to you, resting her head on your shoulder.
After a near hour, Chara stands, albeit a bit wobbly. She makes her way to the table, grabbing the plate and holding it as far from her as possible. Her eyes are closed, and she nearly runs into the counter. As the 'food' is being disposed of, a stray eye rolls off the plate. "Disgusting," Chara mutters, using a napkin to pick up the squishy ball and dump it, "this is just cruel."
"Aren't you all about that?" You ask, finally standing - leaning heavily on the wall.
Chara shakes her head, and, trembling, floats up to Flowey. She carefully lifts him out of the pot, where Papyrus had put him, and returns the flower to his proper home. "I'm about murder, sure, but disembowelment and so forth? That's far past the level of insanity and sadism I advocate."
Napstablook, who has finally risen from the floor, snorts. "Yeah, you just like stabbing everyone and their brother." Chara gives him a thumbs up, and pulls a mop from the cupboard. It feels like an oppressive energy, magic perhaps, has finally lifted. You can talk and make jokes without that weight on your chest, and for that, you're grateful. Nap turns his attention to the window, eyes critical of your new addition. "We are going to be replacing that with some bars or something, yeah?"
Flowey nods enthusiastically, smaller vines waving in the air. "That would be lovely, I'm getting tired. Also, we're changing all the other windows. This is not a democracy, this is a monarchy. Go, slaves."
You chuckle, the simple action sending your stomach into waves. Nap grabs a mop, as do you and Flowey, to clean the house up. Chara pauses from her work to open the fridge, and screams. You all gather around - the shelves are coated in congealed blood, various heads, legs, arms, and organs organized neatly into rows - you notice the intestines seem to be missing, as are several of the eyes.
Napstablook slowly lays on the floor, closing his eyes tightly and muttering under his breath. Everyone else follows suit, the cool of the floor a small comfort.
"I'm going to kill Alphys for this. Three times. No one try to stop me."

YOU ARE READING
Experiments:Yandere!Assorted Characters x Reader
FanfictionWhen Alphy's messes up an experiment, Mettaton, Papyrus, Toriel, Asgore, Undyne, Sans, and Frisk are after you. It's up to Napstablook, Chara, Flowey, and Alphys to keep you safe for 100 weeks. Or however long it takes, anyway.