[Tokyo ]
The city hummed with life even at this late hour, neon signs flickering outside against the glass walls of a towering office building. Inside, the mood was suffocating. .
The staff worked late into the night, their desks cluttered with paperwork and cold cups of coffee, the only sound being the frantic scratching of pens and the dull clacking of keyboards.
From the top office, their boss's voice tore through the silence like a knife.
"Do you think I'm blind? I know what you're doing! If you leave, then...What!?"
He slammed his hand against his desk, rattling the framed photos and stacks of files. "— I'll make sure you regret it!"
The staff whispered nervously. They had grown used to his temper whenever a staff didn't come to work or yelled at his own wife for something.
They hope that they can finally have a day off after this long night.
However what they failed to realize this day is their last day on earth.
Click.
Every light went out. The building was swallowed in darkness. The hum of computers turned off, the constant background noise of telephones ringing stopped.
"Eh?!" The boss jolted upright. "Power outage?"
He pulls out his mobile phone to get a technician to fix it, but the screen on his phone is becoming static and turned off.
"The hell?"
Several employees scrambled, fumbling for their phones. But when they unlocked them, the screens show glitches on them and their batteries drained in seconds.
"Wha—my phone! It was at eighty percent!"
"Mine too!"
"They're all dead!"
One by one, every phone blinked out. Total blackout.
Then, it came again.
Click. Click. Click.
A sound like bones knocking together. Echoing through the floor, bouncing off the walls, as though it came from everywhere at once.
The boss, sweating, stumbled toward the emergency stairwell door. "Stay here. I'll—" His words died in his throat the moment he yanked the door open.
From the pitch black above, something crawled.
A skeleton—no, not human, something twisted beyond recognition. Its body was stretched impossibly long, it unnaturally has a long skeleton taill like a serpent is attached to it's lower body. as it clung to the ceiling like an insect. Six bony arms jutted from its torso, all moving at once and has long claws on the hands. Its hollow ribcage glowed faintly, a pale light pulsing through it like a beating heart.
Strange cloud-like smog coiled around its body, sparking faintly with crackling electricity.
And then… its head twisted. Slowly.
Bone ground against bone as its skull rotated a full 180 degrees, its hollow sockets fixing directly on the boss. The air felt like it collapsed in on itself.
For a moment, silence.
Then it opened its jaw wide—too wide, unhinged—and a shriek tore free.
Not just sound.
It was static, raw distortion, a shrill wail that cut through glass and bone alike. Windows vibrated violently, some cracking. The fluorescent lights along the ceiling briefly flickered, trying to come back on, only to exploded. The screech was accompanied by flashes of light electric bursts, like lightning striking on the floor.
The boss dropped his dead phone, hands clutching his ears as blood trickled between his fingers.
Before he could think anything what is going on the creature lunged itself biting down his head crushing it.
Blood and brains exploded hitting some of the staffs, they look in horror as the creature that killed their boss eats the corpse, it's body covered in blood gets absorbed by bones as the skeletal tail grows a sharp bone blade and slightly change darker with a metallic reflection to it.
The creature paused and looks at the scared staffs, it rushed at them wanting more to feast on.
The employees in the office screamed in terror. Some tried to hide under their desks. Others bolted toward the exits, only for the creature to kill them by using it's skeletal serpent tail pierce in their chests.
Their body slowly shriveled as the moisture in them is getting absorbed by the tail giving the entire tail into a dark metallic color.
The last thing heard before the office descended into chaos again was the sound of the people's screams.
From the streets below, the towering skyscraper looked almost normal. Almost. Only the faintest light escaped through its tinted windows, sharp bursts of white like a storm trapped inside.
A chorus of screams echoed in the building, then vanished.
[Jujutsu headquarters]
"Good grief… what's this about? I just got back from exorcising a cursed spirit shark with tentacles that look like one of those awful movies for crazy people in a asylum."
A young man with white hair, a blindfold over his eyes, and dressed in dark pants with a long-sleeved black shirt, hands tucked into his pockets as though this meeting was an inconvenience.
The dimly lit chamber flickered with candlelight. Six tall cloth-draped doors stood in a circle, each concealing the figures of the higher-ups whose voices carried through the room like echoes of judgment.
One of them spoke, voice sharp and commanding:
"Satoru Gojo, your mission is urgent. A cursed spirit that manipulates lightning has killed several in the building when we had a investigation from the murder. You will eliminate it. Afterward, you are to meet someone of interest immediately."
Gojo tilted his head, his tone playful yet dripping with irritation.
"Eh? Seriously? I just got done a tentacle shark with an appetite for party swimmers, and you want me to clock in for overtime?
Can't you old fossils send someone else? I'm not exactly short on students to wrangle, you know."
From the shadows, Kiyotaka Ijichi stepped forward, carrying a thick stack of papers. He gave a polite bow before holding them out toward Gojo.
"This isn't an ordinary assignment, Gojo-sensei. Please look."
Gojo plucked the file with one hand, flipping through the pages with exaggerated disinterest until a photo caught his attention. A teenage girl stared back at him: dark-skinned, striking red eyes, and long white hair cascading past her shoulders.
"Her name is Rumi Usagiyama, sixteen years old. She has no known flaws in p.e and excelled in Olympic-level trials, undefeated in fifty kickboxing matches, and has been known to take down entire street gangs, leaving over two hundred hospitalized with broken bones. Her mother, Hinata Usagiyama lives in a mansion in tokyo which is not a problem to meet rumi usagiyama or her mother."
Gojo let out a low whistle and raised a brow under his blindfold.
"Woah, woah… hold on. Olympic-level talent, street-fighting prodigy, and her mom in a mansion? Sounds more like a manga protagonist than a random civilian. And let me guess you want me to play babysitter, right?"
His lips curled into a smirk as he waved the file lazily.
"I already have my hands full with Megumi and his sister Tsumiki. Besides, this girl lives in a mansion with her mom she's not exactly about to get auctioned off to a clan.
Isn't that how the zenin biggest hobby, having clan members with great cursed techniques."
A tense silence filled the room before one of the higher-ups finally replied, their voice heavy with authority.
"The sorcerers we dispatched reported a tremendous outpouring of cursed energy around her. The density was equivalent to standing before many special-grade cursed spirits in one spot and is higher than yours.
Furthermore, her mother's illness mirrors that of several other victims across Japan all unexplained illness that has no origin. We must determine if there is a connection to her or not."
Gojo stopped his joking just long enough to let the weight of those words settle in. His smirk softened into a thoughtful frown beneath the blindfold. After a pause, he sighed dramatically.
"Man, you geezers really know how to ruin a good day. Fine, fine I'll deal with your lightning bug first, then go meet this mystery girl of yours. But don't expect me to treat her like a science experiment. If she's dangerous, I'll figure it out. If she's not, I'll still figure it out… and probably better than you lot ever could."
He stretched, turning on his heel toward the door.
"But first—sweets. I can't do overtime on an empty stomach. Mochi, parfait, maybe some dango… yeah, I'm definitely hitting the café first."
Kiyotaka gave a nervous sigh as he trailed behind, files still in his hands.
The six cloth doors remained silent, their hidden judges watching the strongest sorcerer walk out with his usual blend of carelessness and confidence.
[Shinjuku]
The courtyard of Shinjuku Junior High was in shambles again. A heap of groaning boys lay sprawled across the cracked pavement, their uniforms scuffed, ties loose, noses bloodied. At the very top of the pile stood a girl who didn't look the least bit winded. Her arms were folded, chin tilted up ever so slightly, a sharp contrast to the chaos below her.
Her dark skin glistened faintly in the sun, and her long, snow-white hair spilled behind her like a wild banner. Piercing red eyes swept across the groaning boys, unimpressed. She tugged lightly at the sleeves of the boy's uniform shirt she insisted on wearing—rolled up past her elbows, collar open, as if daring anyone to question her choice.
"Come on," she said flatly, her voice carrying across the courtyard like a whipcrack. "Why are you all so weak? I barely broke a sweat beating the crap out of you. If this is the best Shinjuku has, no wonder you're all pathetic."
The boys tried to shuffle, mutter excuses, but the weight of the pile and the shame of their bruises made them silent. Some girls watching from the steps covered their mouths, whispering to each other, both impressed and terrified.
"Eighteenth time this year," one of them muttered.
"She doesn't even go easy on them anymore."
"Who would? They asked for it."
"Yeah, but… still. She's not normal."
The murmurs only grew louder as the heavy double doors of the main building creaked open. Out stepped the principal, a balding man in his late forties, his round glasses slipping nervously down his nose. He adjusted them with a sigh before calling out with a strained voice:
"Ah… Rumi usagiyama. Please… a word, in my office."
Rumi cocked her head, crimson eyes flicking to him. She sighed, unfolded her arms, and hopped off the pile with effortless grace.
The boys beneath her let out relieved groans as the crushing weight lifted. Without a word, she stuffed her hands in her pockets and followed the principal back inside, leaving the courtyard buzzing with whispers in her wake.
---
Inside the principal's office, the air smelled faintly of ink and old paper. Rumi plopped down on the stiff wooden chair without being told, slouching slightly, her long legs stretching out across the tiled floor. She drummed her fingers on the armrest, waiting for the lecture she knew was coming.
The principal shut the door behind him with a quiet click and turned, offering her a weary smile.
"First of all, Rumi… thank you. Once again, for stepping in to protect my daughter. I know those boys can be relentless, and if it weren't for you, she'd… well, she'd probably have come home in tears."
Rumi tilted her head back, staring at the ceiling. "Don't thank me. I don't like seeing weaklings cornering someone just because they think they can. It's pathetic."
"I understand." The principal's smile wavered as he sank into his chair. He rubbed his temples before continuing. "But… must you be so rough with them? Broken noses, sprained wrists… this will be the eighteenth complaint from parents this year alone. They'll start saying detention is not enough to learn your lesson and it's hard for me to make some reasons why you did that."
Rumi's crimson gaze snapped down to him. "No. If they're stupid enough to keep trying, they deserve what they get. I'm not babysitting anyone. You want me to stop, tell your precious students to stop acting like animals."
The words were blunt, and for a moment, the principal had no reply. Then he chuckled softly, almost despite himself. She was impossible—utterly immovable, like a wall you couldn't climb or break.
"Stubborn as ever," he said, shaking his head with a rueful smile.
"No im just strong," Rumi corrected, her lips curling into the faintest smirk.
The principal sighed again, leaning back in his chair. "If only my daughter could… ah, never mind."
Rumi narrowed her eyes. "Spit it out, old man."
He hesitated, then chuckled nervously. "…I was only going to say, if only my daughter could find someone who's strong, reliable, and caring like you. Years ago, She… well, she's expressed to me that she is not into boys. And, well i won—"
"No," Rumi cut in flatly before he could even finish.
The principal blinked. "I wasn't even asking—"
"You were about to," Rumi said, leaning forward, eyes sharp. "Not happening. I don't date. Especially not because someone's parent thinks I'd make a good 'candidate' That's gross."
The principal threw up his hands in surrender, chuckling with embarrassment. "Fair, fair. I apologize. I shouldn't have said anything."
Rumi leaned back in her chair again, smirk fading into something more neutral. "Good."
He exhaled, then nodded toward the door. "Very well, you're dismissed. But Rumi… please, at least pretend to tone it down a little. If not for the parents, then for the reputation of the school. You don't want to be known as the girl who sends half her classmates to the nurse's office every month, do you?"
"Don't care," Rumi said, already standing. She shoved her hands back into her pockets, her long hair brushing over her shoulders as she moved. "They'll either try stopping hunting on the weak or get broken by me. Either way, problem solved."
And with that, she left, the office door clicking shut behind her.
The principal sat there for a long moment, massaging his forehead. Despite everything, a smile tugged at his lips.
"She'll never change," he murmured to himself turning on his laptop and continue his work. "Maybe that's why my daughter admires her so much."
Time goes by as Rumi goes to her classes in until the set and all students can go home.
The final bell rang, and the halls of Shinjuku Junior High filled with the chatter of students happy to be freed from their lessons. Shoes scuffed against polished floors, laughter echoed in clusters, and phones lit up in almost every hand as notifications buzzed.
At the front gate, a small crowd had gathered, their voices lowered in morbid curiosity.
"Did you see this?" one boy whispered, shoving his screen into his friend's face. "Some office building near here like, totally wiped out. They're saying a bunch of people got… massacred or something."
"No way, that's fake," his friend scoffed, but his own phone was already out, scrolling. "Wait… it's trending. People are saying the bodies were, like, melted, torn apart or their sucked dry? what kind of lunatic does that!?"
"Crazy murderer," another girl muttered, hugging her bag tighter. "This city's getting worse. I rather move to Shibuya because I know it's a safe and fun place to live."
"Are that dumb? How do you know that place will be safe if there's a chance of you getting yourself killed over there."
Rumi stepped through the gate with her hands stuffed in her pockets, glancing at the gathering. She didn't stop, but her ears caught enough to understand.
The words "massacre" and "bodies" made her stomach twist. Her classmates could joke or speculate all they wanted, but Rumi had lived here long enough to know what they couldn't. Ordinary people never saw the truth that curses prowled the dark corners of the world, feeding on fear, killing indiscriminately.
She slipped past the crowd, pulling out her own phone. Notifications lit her screen mostly the same news alerts the others had, but one stood out: a text from Mum.
"Rumi, can you stop by the store and pick up some painkillers on your way home? Please."
Her smile faded instantly. She slowed her steps, staring at the words for longer than she needed to. A sigh escaped her lips, fogging faintly in the late afternoon chill.
"…She's having that terrible headache again." Rumi muttered under her breath, shoving the phone back in her pocket. Her white hair caught the dying sunlight as she walked, but her red eyes dulled, heavy with thoughts she couldn't push away.
Her mother's illness was like a shadow in their house. Rumi didn't know what it was, only that it came and went in waves, leaving her mum feeling tired almost every week and stayed on her bed one whole day not leaving the house.
Rumi would fetch the medicine, prepare dinner , do the laundry, watch her mum sleep fitfully and every time, the fear would grow inside her. What if it's not just some sickness? What if it's connected to him? To Kenjaku…
Her hand balled into a fist, the thought made her blood boil. She hated that she couldn't know. Hated that she had to wonder if her mum's pain was just another curse mark.
But then again… nothing about this life is not normal, how does she knows cursed spirits and Kenjaku even though she never met him in person?
Because Rumi usagiyama is a person from another world.
As she crossed the street, weaving past groups of chattering students, the memories slipped in again, memories that are from a different person.
Her name was Stacey from a previous life, she likes working in a gym and watch some anime whenever she gets bored.
The screech of tires, the blinding headlights of a truck, the instant of impact for trying to cross the road after spending a night with one of her girlfriends apartment.
Then waking in a place that wasn't Earth, with a god of reincarnation that took appearance of Morgan freeman standing before her.
He had offered her three wishes because she was going to send her to Jujutsu Kaisen. She had chosen without hesitation.
One is to have her body thr great capabilities a Heavenly Restriction user at it's peak, like Maki and toji with absolute physical prowess, superhuman strength and a body honed to perfection.
Two. A wellspring of cursed energy to rival Rika, the Queen of Curses that surpass satoru in terms of cursed energy alone. So she wouldn't be fearing depletion in a fight, unless you are Sukuna and gojo that have great control of their cursed energy in a atomic level that makes a person feel like they have infinite cursed energy.
The third wish was to have a ability to heal and regenerate wounds or missing limbs with cursed energy, so she would bypass the complicated draining art of reverse cursed technique and save her strength for the battles that mattered.
She remembered how the god of reincarnation spoke to her, his voice echoing in the void with worry. "Your origin of power will change drastically. Jujutsu Kaisen's balance is delicate, and i have to change it a bit for your existence to make sense and it maybe different from what you know."
Back to the present as Rumi crossed the streets. Her thoughts echoed with 3 words.
'I don't care.'
She'd just wanted to live how she wants in this second life and to be strong enough to survive whatever hell awaited her in this world. Even now, as the memory replayed in her head, she has no regrets of choosing these wishes.
So what if her presence bent the rules? All that mattered was that she could fight. That she could protect the one person she had in this world, her mum.
She doesn't know who's her father is and did ask her mum about it years ago.
but she says that her father is working in America and has a business there that needs absolute attention. It's no point talking further about it, as long he's not some asshole like her shitty parents from a previous life who abandoned her at age 8 because they are having financial problems for their stupid gambling addiction.
It's better to have a dad that doesn't shown himself like Deku's dad who never showed in the manga.
Rumi tugged her school jacket tighter as she turned into another street where a shop sells medicines.
*Click click click.*
For a second, she thought she heard a faint clicking sound far away, almost like nails scratching on metal walls.
But she walked on, pretending not to notice, but she is ready for anything.
As Rumi walk forward, the sun dipping lower behind Shinjuku's skyline, the streets slowly shifting from the chatter of students to the restless hum of the city.
But high on one of the building the skeleton creature that was actually a cursed spirit that massacred the people in a business building yesterday is standing on top of it.
it's entire skeletal body now completely dark grey with metallic shine on the sunset. Has it's gaze down on rumi sensing that massive amount of cursed energy from her.
It went away, waiting for the perfect time to strike Rumi and devour her to become stronger.
...
[Yotsuya]
Rumi adjusted the plastic bag in her hand as she strolled through the dim streets of Yotsuya, her phone casting a faint glow against her face. She scrolled lazily through social media, skimming over heated debates about One Piece's Whole Cake Island arc. some saying Big Mom is terrifying, others ranting about how Sanji's family drama dragged too long.
She shakeher head smiling. People online really do love to argue over nothing like in her past life…
The quiet night was broken by the unsettling flicker of house lights. One after another, the warm glows behind windows blinked in and out, like fireflies suffocating.
A low hum ran through the power lines above. The electric wires buzzed, sparking faintly, before every light in the neighborhood went black at once.
Rumi froze mid-step, lowering her phone. The sudden stillness pressed against her ears, heavier than the night air.
From the corner of her eye, movement something shifting on the rooftop.
The skeleton cursed spirit hunched there, its skeletal frame rattling with each twitch. Its jaw opened with a horrid chattering, metallic teeth clanging like broken machinery. The air around it shimmered with a smog of faint static. In the next heartbeat, it lunged.
It didn't even reach her.
WHAM!
Its skull cracked sideways as Rumi's heel smashed into it mid-air, sending the spirit spiraling back into a parked car. The vehicle shrieked as the impact dented metal and set off a muffled alarm.
The cursed spirit clawed out from the wreckage, using one of its six arms to to snap its head back forward, snarling as smoke-like cursed energy crawling across its bones.
Rumi straightened, her plastic bag swinging at her side. Her voice cut sharp through the silence.
"So it was you who killed those people in that building…" Her crimson eyes narrowed, a grin spreading across her lips. "…and you think I wouldn't notice you stalking me."
Her steps echoed against the pavement as she approached, steady and unafraid. With each step, her ears stretched upward, soft fur shimmering into existence as they shifted into long, unmistakable rabbit ears. Her pupils sharpened, her red gaze glowing like molten coals.
"Judging by the way electricity flickers around that smog…" she said sizing it up with cold amusement, "…I'm guessing that's your cursed technique. Cute trick."
Her grin widened, because the predator that was hunting her is going to be the prey tonight.
"But it's not gonna stop me from beating your bony ass."
The cursed spirit roared, a sound like static ripping through glass. Its teeth sparked as arcs of power flashed around its skull.
And Rumi already crouched low like a spring ready to snap exploded forward, fists clenched, the street trembling under her charge.
...
Author note:
IM BACK TO WRITING! I'm so sorry about not uploading because I was busy with life and had been writing my fanfic mortal among gods and 2 new fanfics.
I was very busy and was too lazy to write but I'm back and if you guys comment and give this one power stones, I'll make another chapter fast as possible even though it will feel short.