Author's Note
CONTENT WARNINGS: Death (obviously), suicide via gunshot, graphic mentions of cannibalism & decomposition, body horror, detailed descriptions of dehydration & starvation. Also, heavily implied RariTwi.
A fic based on the greatest story I've ever read.
This is probably the best story I've written in a while, so I'm really excited to share it with you all.
Hope you guys enjoy. 
EDIT 10/11/23: Fixed some grammar and spelling errors, added onto unclear definitions and scenarios, fixed run-on sentences and descriptive elements. Thank you guys for the support; I'm happy to hear that you all felt the chills and paranoia I did while writing this.
The End
318 days ago...
A television screen was mounted against the stone wall at the very back of Site-19. It covered the entire forty foot wall, leaving only five feet of space between the ceiling and the floor. On it, the same exact message continually broadcasted. The message started over, it started at the beginning.
The alarm of an Emergency Alert System tone would play faintly through the speakers, turned down to the lowest setting so as to not draw attention from 'them'. The emblem of the SCP Foundation spun onto the screen, playing the Foundation's anthem. Silence consumed the broadcast as the emblem darkened, becoming part of the background. As the white noise engulfed the room, text began to slowly scroll onto the screen, and the voice of a pony echoed through the speakers.
"This is an Emergency Alert Broadcast authorized by the Lunar Equestrian Empire, at the request of the SCP Foundation," the voice spoke.
The pony that spoke on the broadcast was one that the white pony clad in a tattered lab coat recognized. She stared at the screen in silence as tears gripped her eyes again. She blinked and allowed them to roll. The voice of who had once been the future heir of the Equestrian throne, Twilight Sparkle, rang out on the television screen again.
"If you are reading and listening to this message, you are the last of our kind," she continued. "Approximately 24 hours ago, an Apollyon SCP outbreak occurred. This event has been classified as a "Solar Singularity" Scenario. For unknown reasons, this event has affected the Celestial sun and the light it produces to an extreme degree."
Even as she stood here, staring at the television screen, the white mare felt her eyes droop. Eyes that had once shined like lapis lazuli were as dull as the dusk sky. It was a sight she had not seen in so long, not since the hours before this broadcast was created. She swallowed hard as she listened to the broadcast continue.
"Contact with light reflected by the moon and the sun has resulted in the deaths of--" a hiss rumbled out of the speakers, hiding the number. "--billion ponies and creatures across the globe. Upon contact with sunlight and moonlight, creatures immediately begin to liquify and are to be considered lost. For the safety of Equestria, and the future of those outside of it, please listen to the following instructions to keep yourself and those closest to you from peril."
The text rolled off the top of the screen, and in its place, a diagram was placed. The silhouette of a white pony covered in a hooded cloak, boots, socks, and a protective face mask entered the screen. The image slid to the left, becoming surrounded in a rectangular box. Within the empty space beside the pony, a list of instructions began to appear as they were spoken out loud.
"If you absolutely must venture outside, cover every part of your body with a thick layer of clothing," Twilight said through the speaker. "Ensure that any and all cracks that could lead to light exposure are covered. Ponies venturing outside must be covered at all times to prevent damage or death."
The pony diagram changed, and was replaced with a gelatinous blob. The white mare could feel bile threatening to creep up the back of her throat as she stared at the blob. Various pony heads and bodies featuring unicorn horns, pegasus wings, and dripping eyes were poking out of the blob. Other seemingly detatched limbs littered the creature, ranging from the claws of a tiger to the hooves of a goat.
"If you come across a lost individual, now designated as SCP-001-A, leave the area immediately," Twilight instructed firmly and desperately. "Engaging in combat is not recommended. If one of your loved ones or friends goes missing, do not pursue them. Euthanization and recovery are not to be attempted. They are not the same pony you once knew. They are dead."
The diagram shifted once more, showcasing a cloaked pony and a gelatinous blob. The cloaked pony carried a flamethrower. Every second, the diagram would shift to showcase fire being expelled from the flamethrower onto the pony blob. Twilight's instructions continued as text was written on the right of the images.
"If you must enter combat with a SCP-001-A instance, use fire," she stated. "Fire has proven to be an effective form of immobilizing these instances. The use of unicorn magic is not advised. Close combat with SCP-001-A instances has proven ineffective and fatal in one-hundred percent of cases."
The diagram shifted, but it only replaced the fire decal from before. Instead of fire being ejected from the item the cloaked pony held, snowflakes were blown from it. Alongside this new change, the blob was incase in ice. The diagram continued to flip between these states as Twilight spoke.
"If incendiary weapons are unavailable, cryonic munitions may be used. They are found in government owned buildings," Twilight explained. "They are the most effective at immobilizing SCP-001-A instances."
The diagram changed a final time as the rest of the rectangular box filled with text. The image showcased a rectangular building, resembling a small town home. A sign was on top of the building, with the words 'Site-19' written on it.
"If you are still alive, begin making your way to Site-19," Twilight instructed the viewers. "Follow the coordinates written on screen. We need as many hooves, paws, and hands as we can get. We will explain everything to you when you arrive."
The text and imagery was wiped from the screen, and the logo of the SCP Foundation faded fully back into the frame. Underneath it, the words 'Secure. Contain. Protect.' were written in a bolded font.
"Site-19 needs you. Please, come find us," Twilight said, borderline pleading. It was obvious she was near tears or in tears when she made this announcement. "The fate of ponykind and the lives of all creatures rests with Site-19. The SCP Foundation thanks you for your patience. Secure. Contain. Protect."
The coordinates to Site-19 flashed repeatedly on the screen as the anthem of the foundation played once more.
"This message will repeat until there are no creatures left to hear it." Twilight ended the message.
The coordinates continued to flash on the screen. The white pony stared in silence, eyes dull and lifeless. For approximately thirty seconds, the coordinates continued to flash. White noise filled the room; Twilight's voice was gone. This was the only way she could hear Twilight's voice again. This was the last record the mare had of Twilight Sparkle, a former princess of what had once been known as 'Equestria'.
The white mare draped herself over the table in the quiet room, her purple mane falling in a tangled mess around her. Twilight Sparkle had died seventeen days ago, and this was all that remained of her. It was a thought the poor mare couldn't get out of her head. A pony that she had considered her best friend, a pony that she loved... she had been dead for so long.
She hadn't brushed her hair since Twilight died. She couldn't even remember the last time she had showered, or eaten. The food supply at Site-19 was running low, and most of it had been destroyed in an earlier outbreak. Some of the personell of the past had to go to great lengths to conserve food. She had seen the bones of her colleagues still stained red with blood, holes in their skulls where they had shot themselves dead. Their food was low then, just as it was now.
They were desperate, all of them.
She had joined some of the ponies as they cleaned the flesh of their colleagues, and feasted upon it because they had no choice. The deceased had made their decision. Being eaten was a better alternative than turning into one of those things. Twilight herself had fallen victim to it, even though she was already bloated when the decision was made.
The white mare hated the taste and the concept of eating her kind itself. But, she needed to eat. She was one of the last that was left. She had no choice, even if her friends became her meal. Even she feasted upon the corpse of Twilight Sparkle with her friends.
She had to cultivate the future of Equestria, and its outside inhabitants. There was no other way.
...
Thirty seconds had passed, and the Emergency Alert System alarm played through the speakers yet again.
"This is an Emergency Alert Broadcast authorized by the Lunar Equestrian Empire at the request of the SCP Foundation," Twilight Sparkle's voice rang out on the speakers again as the message started over from the beginning.
The white mare let her glossy eyes shut, and the deceased princess's stern voice lulled her into a dreamless sleep.
...
73 days ago...
The white mare had not showered in thirteen weeks. She had gotten used to the scent as she walked the empty halls of Site-19. Her tangled hair had begun to fall out, leaving bald spots on her head. She no longer cared about her beauty, nor could she be bothered to care about her personal state of mind. Nothing else around her worked, so neither did she.
The computers no longer hummed; the electricity had stopped working months ago. Clean water was a treasure to come across. She only drank enough water to keep herself alive, but she was constantly on the verge of death, and she knew that. Her stomach growled and her tongue always felt sandpaper dry. Her body had thinned significantly, and with each step she took, she felt as though one wrong move would shatter the bones in her body. She was sure her cries of agony would summon them to her location, and she too would become one with the amorphous blob that craved sunlight.
...She had stopped crying over everything a long time ago. When the electricity died, she could no longer hear the voice of Twilight Sparkle, even if it was through that same exact broadcast. She could no longer be comforted by the voice of the dead princess. The bones of her colleagues filled the rooms where they had once slept, unable to be buried lest they cave in the entire foundation. In one of those rooms, Twilight's bones still rested too.
She had tried many times to make contact with the outside world. The radios they held in the foundation could reach so far because of the satellite that buried their protective shelter. But it had powered down when the electricity went out. Her radio could only reach the nearest town, dozens of miles from her location.
She had run out of batteries for her radio days ago. She made contact with only one outsider before her battery died and her radio was silenced. She was able to deliver the coordinates of Site-19 to them, since the televisions above ground had stopped working. She didn't know if the pony she talked to was still alive out there. She wasn't sure if she cared, because she didn't even know the pony's name.
Their world was already doomed. Looking for batteries was pointless, as was looking for survivors.
She'd given up all hope the day Twilight had chosen to kill herself. She cried herself to sleep as the gunshot sound echoed from within Twilight's room. Her blood still splattered the wall beside her bed, even though she had long since decayed. The white mare couldn't bring herself to clean up the mess, even if she had neatly placed the bones of her colleagues together in their respective rooms.
On the floor of her bedroom, Twilight's bones remained in the same exact position she had died in. The empty eye sockets of her skull stared at the wall, and the rest of her was blanketed in the tattered lab coat she once wore. It had gotten shorter as it lay there, becoming a victim of weathering in the air. It was filthy, and the bodies of dead flies surrounded it. Dead maggots were curled underneath and on top of the mare's bones, having no more flesh to feast upon.
The best of the flesh had been stripped away to be used as a food source by the white mare and her friends. Whatever remained was left to rot, to be eaten by the disgusting bugs that once flew in stupid circles around the room, laying eggs and attempting to grow.
The mare had not opened the door to the room since the skeletonization of her once dear friend's body. She had no reason to continue visiting. Why should she bother? She would see the same sight when she passed on to another life some day...
That day was soon to draw nearer and nearer. Her stomach continued to growl, and her steps were weakened as her body dried out. She walked into her room at the end of the hall, having taken much longer than a normal pony would've to reach it. She was so sluggish, and horribly tired. The dark circles under her eyes did not only scream out in tiredness, but they retained the tear trails she couldn't be bothered to scrub from her face. They showed her weakness as hunger and dehydration filled her body and soul, and her anguish from the days she spent crying over the dead.
She pushed open the door to her room, and stepped inside. Crumpled water bottles and chip bags littered the floor. The garbage stank from rotten food. Her bed was filthy, and it was because of the dirt and dust that clung to her coat, fur, and mane. Strands of her hair had fallen out into her sheets, but she couldn't be bothered to sweep them clean. It wasn't like she could see it anyways; without the electricity, the foundation had gone dark... and silent.
From underneath the desk she had pushed into the corner of her room, she retrieved a bottle of water using her magic. The blue light from her magic barely lit up the room as she lifted the bottle in front of her face. Three inches of liquid remained. She unscrewed the top and lifted it to her lips. She drank an inch of water. It was all she could afford to drink. She could wait approximately two more days before consuming any more water. She made a note to herself that she would have to go looking in the other rooms for water soon.
After all, she would be dead within three days if she didn't.
...
The present...
"Three-thousand eight hundred and ninety-one days ago, the world changed," the white mare spoke into a recording device.
It was the only device with batteries that she could find. The batteries did not work for her radio; they were too small. If any ponies out there existed, this recording device would be the last evidence that ponies really did live at Site-19... and they were trying to continue life in a hopeless world.
"A Solar Singularity scenario occurred back then," she continued to speak as she paced around her room. Her voice was broken, as she hadn't talked for almost seven months now.
She cleared her throat, and forced herself to retrieve the last bottle of water from under her desk. Her last bottles, she had stolen from Twilight's room. Five inches of water remained in this bottle. She had no interest in conserving it. She gulped the water down. The old water felt and tasted like heaven on her lips and throat. She swallowed it down until nothing remained.
When she had finished, she crushed the bottle, and threw it to the side with no care for where it landed.
"My name is Rarity," she said. "I used to be a fashionista and a researcher at the SCP Foundation with level four clearance. If you are hearing this recording, you are all that is left. You must've heard a similar saying on the broadcast that was sent out three-thousand eight hundred and ninety-one days ago, right? Oh... it's impossible to believe it's been more than ten years since this freakshow began. I'm impressed that I survived so long; I learned to adjust to grime and dirt very quickly."
She tried to laugh, but choked up wheezes were all that escaped her throat. It made her break into a coughing fit. She clamped her hooves over her jaw, trying to shut herself up as paranoia pounded in her ears and chest. Her heartrate must've increased by tenfold. In a panic, she opened the door to her room and looked around outside. She waited in a stunned silence to hear the squelching and screaming of those creatures.
...But she heard nothing. She shut the door to her room slowly, and backed away from the door. Some of her mane got caught in the door as it closed, but she didn't even feel it as it was pulled from her head. It had already fallen out, but due to the tangles in her mane, it hadn't yet been freed.
The mare's voice grew to just above a whisper as she continued to speak into the recorder.
"I must deliver unfortunate news; Site-19 is no more," she said with a whimper, her ears drooping at the sides of her head. "Even the supposed 'saviours' of Equestria fell to this... disease. Approximately three hundred and eleven days ago, those creatures broke into our main supply center from an opening in the ventilation system. It was only one, but that was all it took."
Rarity choked out a sob as she recalled the event. Several of her friends had died that day. She and Twilight were the only ponies that were able to lock the devil's confidants within the chambers of their supply room. They had lost everything that day; all that remained was what little supplies existed in their rooms. Even Site-19 had begun to fall, and they could not sustain it. The future of their species had been sealed, and yet they were in denial of it even as their stomachs rumbled.
"...We've been eating eachother," Rarity laughed as though she thought it really was funny, even though it made her stomach gurgle with hunger. "I say we as if any pony is still alive other than me... I've been alone for so long!"
She cackled as she spun on her hooves and collapsed against the wall. Her widened eyes stared at the ceiling, and through her crooked smile, tears began to dribble down her face. In the darkness, she felt as though she could see eyes and smiles shining down on her. Sometimes, she was thankful that she could see ponies in the shadows and feel like she wasn't alone. She had gone mad, but in a world populated by the dead, maybe she was the one who was sane.
She sniffled, clutching her snout in her hooves to once more silence her sorry self. She took deep breaths before she continued speaking, her voice broken with tears.
"...If you are out there, there is no hope," she stated bluntly into the recorder. "Every pony is dead. Or... they're one of those things. There's nothing we can do against them. Their existence is our only evidence that the sun is never going to change back. We are being punished for something that was far out of our control."
What were they being punished for? Rarity had no clue. It just felt right to say. It felt as though the gods above were screeching out in disdain at the creatures that inhabited the planet. It was Equestria's sun alone that had turned evil, right? Did any of the creatures outside Equestria even care what was going on? Did their sun also change?
Rarity didn't care.
The growling in her stomach was a constant rumble that shook her thin body to the core. She could count her ribs now, and see her bones through her legs. And even though she had just drank water, her tongue was still dry as it clicked at the roof of her mouth.
"Whatever we did to deserve this, I want to know what it was," Rarity whimpered, a choked up sob escaping her throat. "What have we done to earn such a cruel fate? They won't even let us die... our beloveds will carry us into the mountains of flesh that inhabit this planet and swallow us whole. Or... Celestia forbid they take us into the sun. That cursed sun that they--"
Rarity was silenced as a loud thud echoed from far, far down the corridor. She held her breath as tears began to stream down her face and her glossy eyes widened in horror and panic. No, no no no...
"No no no, please, anything but this!" Rarity whisper yelled as she pinned her ears to the sides of her head.
Paranoia flushed through her body and overshadowed the starvation and dehydration. In a blind panic, her blue magic lifted the bed and the desk within her room, illuminating everything, even the hallway outside the door's window. She stacked the bed on top of her desk and pressed the stack against the door, blocking out the window completely. Blankets, sheets, pillows, her desk lamp, her documents, her pens and pencils, the crushed up water bottles, the chip bags... everything was stacked in a blind panic against the door.
She had to force herself to breathe through her nose even as she hyperventilated. Her body shook worse than an earthquake of the highest possible magnitude. She bit her lip so hard that blood began to dribble down her chin. She curled up into the corner, rocking back and forth with widened eyes. She blinked rapidly as tears rolled down her face and dried out her eyes.
She buried her face in her hooves as she rocked back and forth, and settled the recorder on the ground so that no light could leak out of the window from her horn's magic. She was sure that there were cracks in her protective barrier, and that terrified her. It made the blood dripping from her mouth feel hot, and the tears rolling down her sunken features felt like lava.
All the water she had drank earlier would be cried out in seconds.
...
...
...
Silence...
...
...
...
A deafening, horrible silence filled the air.
...
...
...
...
...
...
Rarity almost felt like she was going to faint. Her world faded into white noise as fatigue phased through her body and ate through her psyche. She hadn't slept in days and it showed. But, the panic that quickened her heart rate refused to allow her to sleep as the heavy stomps of hooves and Celestia knows what thudded through the hallway. Moans and groans filled the air, calling out for any pony so they too could be dragged into the sun.
She held her breath tightly as she heard the squelching, screaming mass approaching. The cacophany of voices attached to the disgusting mass that slouched through the halls was reminiscent of her lost companions. The ones that had died when the first of those things broke into their supply room now roamed the halls as lifeless corpses, combined into a melted pool of flesh and bones that was undying. With each cry, its gurgles and laughter begged for her to walk into the sunlight.
Never did it cease to tell her how gorgeous the sun was. It never stopped trying to convince her that the sun was warm and wonderful. It did not stop to consider that she did not want to go outside because she was afraid of the sun. Life was beautiful outside, and the sun was warm.
They knew she was here, and they were looking non-stop. She could never leave her room again.
They would drag her into the sun whether she wanted to go or not. But she would refuse until her final breath. As the sounds approached, she shut her eyes tight and repeated it to herself. She will live in the darkness, not die in the light. She fought for the right to live in the shadows where the sun could not reach her. She did what she had to for the sake of ponykind, and she would not be defeated.
I will live in the darkness, not die in the light, she thought with a hiss.
She would not let them kill her.
...
...
...
I will live in the darkness, not die in the light, she whispered to herself defiantly, but it was so silent, only her lips made the movements of speaking.
She would not let them turn her into her enemy.
...
...
...
The noisy creature settled itself outside her room. Tighter she held her breath, and it was suffocating. She tried to quell the shakes of her body, and no longer did she rock on the floor. She stared at the tower of objects she had stacked in front of the door, praying silently that nothing slipped or fell.
...
She was lucky that nothing did, other than the mass of corpses outside. It groaned and screamed as it stumbled down the hallway, trailing blood behind it. She wished that she could look outside, but she wouldn't be able to see anything anyways. The darkness that filled the empty space was terrifying, and she wouldn't dare use what little power was in her flashlight, for the fear of the creatures catching her.
But the devil's confidants were gone now. When Rarity could no longer hear the voices, she looked at her recording device. She had wasted enough time. Most of the recording would be her terrified silence. Only now, now that she felt alone, she could let go of the breath she had been holding onto. After so much silence, she chose to speak in a barely audible mumble into the device.
"They won't stop," she said fearfully. "Every pony must join them in the sunlight, or they aren't satisfied. They love it, they live in it. The warmth is all they talk about. The sun is like a god to them. They live and die for the light, while we live and die in the dark."
Rarity let out a shaky breath. It did nothing to calm her racing heart.
"I'm going to d-die h-here," she laughs through a stutter. "I-I knew it all along, but I didn't w-want to accept it... I wanted to believe that... that a-a better fate awaited me out p-past this universe. We-- w-we were...- we were trying to build a rocket y-you know. Get out of this g-god forsaken s-solar system, away from t-this... this h-horrible s-s-sun."
Rarity's stutters only worsened as she reminisced on what could've been. What life could've been outside this planet, outside this universe. Would they have been able to outrun the cursed sun? Would any ponies have been brave enough to test if the light could still reach them on their new planet?
"T-T-Twilight..." Rarity mumbled as she began to cry. "S-she tried so hard... but it was all f-for nothing. W-whoever is reading this... just give in. Don't let them and the sun take you... but living on i-is not an option anymore. Killing yourself... i-is the solution. It is the c-c-cure."
Rarity's magic illuminated the room as she pulled a handgun out from one of her desk drawers. When she shut it, she held her breath again as the squelches in the hallway resumed. She swallowed hard, and pulled the recording device close to her snout. Anger ignited in her eyes as she growled into the device.
"The sun won't take me," she said defiantly through tears. "I will live in the darkness, not die in the light!"
She set the device on the ground, and curled up in the corner. She raised a hoof above the button to end the recording, and pointed the gun toward herself. The squelching and screaming mass called out her name. They had heard her. She had already been discovered. Tears rolled down her face as the mass gurgled out her name and slammed into the door.
Her body shook as she sobbed. They already knew she was there. There was no point in hiding. The wet blob pounded against the door, yelling in the voices of her friends.
"Raaaaaaaarriiiity..." the voice of a once gentle pegasus groaned out from behind the door, joined by one other pony admist the sprawling mass of flesh.
Rarity whimpered pitifully as she pressed the end of the barrel into her chin. She stared at the dark ceiling as tears drenched her sunken face. Her stomach growled almost as loud as the voices through the door.
"Please, Rarity, won't you come and see the suun with uusss..?" a playful and cocky voice echoed from beyond the door before breaking out into a fit of maddened laughter with however many other ponies were conglomerated together.
Rarity swore she could catch a glimpse of a brilliant rainbow mane in the darkness. The mane became trapped in the hinges of the door as it bent into the room with every slam. Strands of hair ripped free, and a sickly cold puddle of what smelled like blood and feces seeped from underneath the door. Rarity didn't care when it stretched in her direction, dirtying her body and her clothes. She took a deep shaky breath and clenched her teeth tightly together.
"The sunlight is beautiful! It's beautiful!" The gurgling masses chanted repeatedly, every time they slammed into the door to her room and made her stack of items shake.
The glass on the door cracked as she opened her mouth, and uttered her final words.
"Fuck you and your sun."
She put the barrel of the gun between her lips, and pointed at the roof of her mouth.
...
...Silence filled the dark space as she pulled the trigger, and her limp hoof ended the recording.
