Chapter Text
Returning to Japan after two years of studying Comparative Culture in Edinburgh wasn't the dramatic homecoming you had envisioned, but it was exactly the breath of fresh air you needed.
You were twenty-six, holding a degree that didn't immediately guarantee a corporate desk job, and frankly, you weren't in a rush to find one.
Thanks to the grueling hospitality shifts you’d pulled at a cozy pub in Scotland, you had a decent cushion of savings to your name.
But you didn't want to be a burden.
Three months ago, you packed your life into two suitcases and moved back into the Sendai apartment, immediately picking up evening and closing shifts four days a week at a local family restaurant to help pitch in for rent and groceries.
Your relationship with your grandfather had always been a complicated, distant thing, full of sharp grunts and heavy silences. You weren't close, not the way he and Yuji were. But Yuji... Yuji was your absolute world.
For the past two years, you had only seen your little brother twice a year, during the bustling New Year’s holidays and the sweltering heat of Obon in August.
Every time you flew back, he seemed to have grown another three inches, his bright, unbothered laugh a stark contrast to the dreary weather you left behind in the UK.
Now, having been back for ninety days, the routine of your new life had finally settled into a comfortable, warm rhythm.
The first month had been blissfully uneventful.
It gave you the time to truly relearn the boy your little brother had become. You learned his quirks, like the way he could devour three bowls of rice without blinking, his absolute obsession with watching obscure variety shows, and his sudden, baffling physical prowess that had sports clubs practically begging him to join on a daily basis.
He was sweet, fiercely loyal, and fiercely protective of the people around him. Having a little brother like him felt less like a responsibility and more like a genuine blessing.
Besides the close friends you had left behind across the ocean, you were relatively isolated here in Sendai. You didn't have a sprawling social circle or a partner waiting for you.
But on your three days off each week, none of that mattered.
The highlight of your week was always the same: sitting across from Yuji at the low kitchen table after his high school classes let out, the steam from a home-cooked meal rising between you.
You’d listen to him ramble about the Occult Research Club, a bizarre choice for a kid who could easily be an Olympic athlete, and you’d tell him ridiculous stories about the eccentric locals you met during your university days.
It was a quiet, peaceful life. A normal life.
On your 46th day since coming back home, you realized that not everything in this city was as peaceful as you had desperately wanted it to be.
It was a Thursday night, the quietest evening of the week, and you had just finished closing up the restaurant alone.
As you turned the heavy key in the lock, your thoughts drifted to Yuji. You wondered if the brat had eaten yet. He had this infuriating, incredibly sweet habit of waiting up for you to have dinner together, which always made you feel guilty.
You had scolded him about it plenty of times, reminding him that he had high school classes at 7:30 in the morning and shouldn't be eating dinner at midnight just for you, but he’d always just rub the back of his neck, flash that bright, goofy grin, and say, "Don't worry, sis, I wasn't even hungry anyway."
He had even tried walking to the restaurant to escort you home once or twice, which you had strictly forbidden.
Sure, you were a woman walking alone at night, but you were twenty-six, perfectly capable, and Sendai was supposed to be a safe city.
Or so you had thought.
Pocketing the restaurant keys, you let out a relieved sigh, glad to be completely done with work for the week. But the sudden, faint sound of a footsteps echoing against the asphalt made you freeze.
Across the dimly lit street, a man was walking. The moment his eyes landed on you standing under the fading glow of the restaurant's awning, his pace noticeably slowed.
Great, you thought, a cold prickle of unease brushing against your neck.
You tried to rationalize it. It was fine.
He was probably just passing by; you weren't the only person alive in the city at midnight. Still, your instincts as a woman kicked in.
You reached into your pocket, sliding your fingers between your keys, threading them between your knuckles just in case.
For ten agonizing minutes, the illusion of safety completely disintegrated.
No matter which turn you took, the heavy, rhythmic sound of his boots followed.
You purposely slowed your pace to let him pass; he slowed down too.
You quickened your steps, your heart starting to hammer violently against your ribs; his footsteps sped up in perfect synchronization.
There was no doubt about it anymore. He was hunting you.
Panic completely seized your brain.
In a desperate, split-second decision to shake him, you veered left down a dark, narrow alleyway, hoping to slip into the shadows.
But the moment you turned the corner, your stomach dropped. It wasn't your usual route. The alley was a dead end, boxed in by towering concrete walls.
Before you could even sprint back, a massive shadow blocked the entrance. He was already right in front of you.
Up close, the sheer size of him made your breath hitch.
He was tall, with massively broad shoulders, towering over your average frame. You knew instantly that if this came down to a physical fight, the odds were horrifically stacked against you.
The air in the enclosed alley became dense, suffocating, and terrifyingly heavy.
He stepped closer, his voice a barely audible, menacing whisper that made your skin crawl. "C'mon, pretty lady... I've seen you a few times at the restaurant. You never look my way."
Before you could scream, he lunged.
His heavy hands clamped onto you, shoving you violently against the brick wall with enough force to rattle your teeth. He didn't let go.
"That hurts my feelings, you know?" he sneered, his breath hot and foul against your cheek. "You're gonna have to repay me for that."
"Are you crazy?!" you shrieked, the adrenaline violently flooding your system.
The absolute urgency in your brain screamed that you were in mortal danger.
You thrashed wildly as his hands began tearing at the fabric of your shirt, the sound of ripping cloth echoing brutally in the quiet alley.
With a cruel smirk, he snatched your purse off your shoulder and threw it into the dirt.
You opened your mouth to scream for help, but his massive palm instantly slammed over your face, stifling the sound into a muffled, terrified gasp.
Even with one hand pinning your mouth and the other bruising your wrists, he was ten times stronger than you.
He tried to pin you flat against the bricks, but you refused to go down easy.
Using every ounce of leverage you had left, you violently drove your leg upward, your boot connecting hard to get him off you.
The blow only pissed him off more.
His face contorted into pure rage.
With a guttural curse, he grabbed you by the collar and slammed you violently down onto the hard concrete.
Your back and the back of your head struck the ground with a sickening, hollow thud. The sheer impact violently knocked the breath straight out of your lungs, leaving you gasping, blind with pain, as the darkness of the alley began to spin.
The keys slipped from your numb fingers, clattering uselessly against the concrete, but the sound was instantly swallowed by the white-hot agony radiating through your skull.
Your body, entirely unaccustomed to such brutal violence, simply couldn't process the shock. Through the haze of pain, you felt the crushing weight of the man shifting over you.
His large, calloused hand moved from your mouth, wrapping tightly around your throat, slowly choking the remaining air from your lungs as his other hand frantically untied his pants.
Driven by pure, frantic survival instinct, you whipped your arm up and clawed at his skin. Your nails dug deep into his cheek, tearing flesh and leaving angry, bloody streaks.
He roared in frustration, his grip on your windpipe tightening instantly.
He squeezed harder, deliberately cutting off your oxygen as he began to defile you in the exact way every woman on earth terrifies of being hurt.
You couldn't breathe. You couldn't fight. All you could do was pray.
You had never been a religious person, not even a little bit, but in that suffocating darkness, your mind began frantically begging.
The prayers spilled from your soul, your lips moving in silent, desperate gasps that were completely inaudible over the man's heavy breathing and the disgusting rustle of fabric.
At first, you prayed for anyone—a passerby, a police car, a miracle.
But as the horrific reality of the trauma began to permanently fracture your sanity, your thoughts violently shifted.
You thought of Yuji.
You thought of him sitting alone at the kitchen table, dinner getting cold, waiting for a sister who would never come home.
The sheer, agonizing desperation of that thought triggered something deep within the marrow of your bones.
A raw, energy, completely unknown to you, began to claw its way to the surface, feeding on your terror and your boundless love for your brother. You begged for anything to save you.
Good or bad. God or demon. You didn't care. Just make it stop.
The universe answered.
As your vision began to vignette, your body preparing to shut down from the lack of oxygen, the man didn't even notice.
He was a monster, utterly indifferent to whether he was raping a woman who was conscious, unconscious, or dead.
From the casual, practiced cruelty of his movements, you could tell this wasn't his first time.
But suddenly, the shadows in the alleyway didn't just deepen, they stretched. A massive, unnatural darkness pooled around your failing body, and a blinding, ethereal purple hue began to bleed into your fading eyesight.
"If I grant you my help, you will have to accept the condition, young soul."
The voice didn't come from the alley. It resonated directly inside the chambers of your skull—heavy, dark, and profoundly inhumane. It vibrated with an ancient, terrifying authority, yet to your dying mind, it was the most beautiful sound you had ever heard.
You didn't care about conditions. You didn't care about a catch. You were a drowning soul reaching for a blade.
"I need an audible agreement to seal the deal."
"Yes... you like it, huh, little lady?" the man sneered above you, completely oblivious to the cosmic horror bleeding into the brick walls around him, his vile hands continuing to bruise your skin.
You gathered every single ounce of willpower left in your breaking body.
You refused to let this be your grave. Pushing past the vice grip on your throat, you forced air through your vocal cords to answer the voice.
"Y-yes..."
The word came out as a cracked, barely audible croak. But it was more than enough for the spirit.
The moment the vow was spoken, She heard you.
Instantly, all the pain vanished.
The suffocation, the bruising, the cold concrete beneath your back, it all disappeared in a sickening flash.
It felt like a violent, out-of-body experience; suddenly, you were no longer trapped inside your fragile, human shell.
You were watching from above as your own body became enveloped in a roaring, tempestuous aura of dark violet and pitch-black cursed energy.
Through the shadow, you saw your own silhouette warp.
Your hands suddenly had more fingers than they should have, tipped with razor-sharp, obsidian claws that were vastly longer than your nails. Your face was entirely obscured by a swirling mask of dark shadows, save for two pairs of burning, malignant yellow eyes that tore through the darkness.
Before the man could even register the sudden spike of suffocating energy, your newly altered body moved with impossible, supernatural speed.
In a fraction of a second, those long claws flashed through the air.
With a single, effortless sweep, your body ripped the monster completely apart.
Flesh, bone, and cloth disintegrated into a spray of crimson, silencing his vile voice forever and leaving the alley in a deafening, blood-soaked stillness.
You were huffing violently, your chest heaving as your consciousness crashed back down into your physical shell.
Yet, the monstrous form didn't dissolve right away. You were stuck somewhere in between, your skin still vibrating with a dark, crackling energy.
You felt a terrifying, intoxicating strength humming in your veins, like you held the power of a million men right in the palms of your hands.
Shaking, you looked down. The alleyway was a slaughterhouse.
Body parts, splattered blood, and torn organs were painted across the concrete walls. Right at your feet lay the severed head of the man, his eyes still wide with the fractions of a second of absolute terror he had felt before you tore him apart.
You felt no pain. No exhaustion. No trauma. Just a pure, raw, terrifying wave of bliss and adrenaline washing over your mind.
"What is this? What are you?"
You spoke the words aloud, your own voice trembling, but the answer that came back didn't stay inside your thoughts. It came directly out of your own mouth, ripping through your vocal cords, but the tone wasn't yours at all.
It was deeply woven into your own brain, your own soul.
"For now, you can call me a revenge spirit. You'll thank me later."
The voice was incredibly deep, ragged, and monstrous, yet beneath the raw, ancient malice, it was unmistakably feminine.
The moment those final words left your lips, the suffocating purple aura violently snapped back inside you.
The obsidian claws receded, the extra fingers vanished, and your body finally returned to its natural, human form.
You staggered forward, looking down at your hands, your clothes, and your bare skin. You were utterly drenched in blood. Thick, dark, and smelling heavily of iron.
None of it was yours.
Your very first reflex was to drop to your knees and vomit.
You gagged violently against the pavement, tears pricking your eyes as the pure, visceral disgust overrode the adrenaline.
You looked like a literal monster had swallowed you whole, digested you, and then puked you back out into the dirt.
The phantom numbness began to fade, and the actual physical pain came crawling back a few minutes later as you forced your trembling legs to stand.
Dragging your feet, you began the long, agonizing walk home. The cold Sendai night air bit at your skin, and you kept your head buried low, silently praying to whatever was left of your sanity that no living soul would cross your path looking like this.
Your throat was aching fiercely, a burning, swollen reminder of the vice-like grip that had been choking the life out of you. Your mind was completely fractured; you didn't even want to begin processing what that man had done to you, or what you had done to him.
Your brain went on pure autopilot, guiding you down the familiar, quiet streets toward your apartment. But you knew, with a terrifying certainty, that you were no longer alone inside your own head.
The moment you slid the front door open, the heavy lock clicking in the quiet apartment, rushing footsteps instantly echoed from the hallway.
Yuji came flying around the corner, his face pale and completely panicked because you were over an hour later than usual. "Sis! Where have you—"
The words died instantly in his throat. Yuji froze dead in his tracks, his bright brown eyes widening in sheer, unadulterated horror.
He was a lot of things, but nothing in his life could have ever prepared him for the vision standing in front of him.
That night, Yuji had completely transformed.
The bright, carefree boy vanished, replaced by a frantic, fiercely protective brother who moved entirely on instinct. He didn't care about the blood covering his clothes; he just scooped you up, brought you to the bathroom, and helped you wash the iron-scented horror down the drain. He kept asking questions, his voice cracking with a terrifying mixture of panic and rage—Who did this? What happened? Are you hurt anywhere else?—but no words ever left your mouth.
Your vocal cords felt completely welded shut by trauma.
For a whole week, you lived in total, agonizing silence.
Yuji refused to leave your side. He completely stopped going to Sugisawa High for those seven days, ignoring the phone calls from his school and his sports clubs.
He cooked every meal, brought it to your bedside, and sat on the floor watching you with hollow, worried eyes. But he couldn't stay home indefinitely.
He was a teenager facing an invisible wall, completely unequipped to heal a psychological fracture this deep. Eventually, realizing his constant, suffocating presence might be doing more harm than good, he decided that giving you absolute privacy was the only solution left.
He quietly left the apartment that morning, promising he'd be back right after class.
The silence of the empty apartment was heavy, pressing down on your chest as you lay completely still in your bed, staring blankly at the ceiling.
Then, the temperature in the room violently plummeted.
The familiar, suffocating pressure of that dark violet energy didn't manifest physically this time, but it pooled densely behind your eyes. A shiver raced down your spine as a shadow seemed to twist in the corner of your vision, and the deep, ragged, monstrously feminine voice finally echoed inside the quiet chambers of your mind.
"We're finally alone."
The shadow in the corner of your bedroom rippled, the air growing thick with the scent of burning incense and old blood. Inside your mind, her voice didn't sound like the frantic chaos of modern life. It was slow, rhythmic, and heavy with the weight of a thousand years.
"Do not look upon me with fear, young soul," She whispered, her presence pressing against your consciousness like a velvet weight.
"We are bound now, by blood and by vow. You called for an executioner, and the universe gave you the one who mastered the art."
As she spoke, fragments of memories that were not your own began to bleed into your brain.
You saw visions of ancient Japan—pagodas piercing a stormy sky, fields of mud and severed limbs, and a world where sorcerers ruled like gods, yet women were treated as lesser, fragile things.
"A thousand years have passed since my flesh walked this earth, during the golden, rotting age of sorcery known as the Heian era," She narrated, a bitter, melodic edge to her voice. "I bore no prestigious name. The Gojo, the Zen'in... they would have looked upon my lineage as nothing more than peasants in the dirt. But the heavens are fickle. On my sixth birthday, the world did not change, no, I did."
A vision flashed: a young girl clutching her head, screaming as the unfiltered, disgusting thoughts of every villager around her flooded her mind. Her name echoing in you head, Akane (紅音 / 悪厭)
"My innate technique manifested as an absolute breach of the soul: Telepathy. I could read every hidden malice, every depraved desire, and every weak lie harboring in the minds of those around me. And do you know what I learned, little girl? I learned that men are driven by a singular, putrid rot. I heard how the village elders looked at a child; I heard how husbands thought of their wives. A deep, unyielding loathing took root in my chest. And hate, in our world, is a magnificent fuel for cursed energy."
The vision shifted.
The little girl grew, her body warping. She became a towering, majestic terror.
Because she lacked a clan to teach her, her cursed energy adapted to her hatred, manifesting a secondary, terrifying physical form whenever she fought.
"As my power grew, so did my true form, a physical manifestation of my innate technique. I became a master of close-quarters slaughter. Unlike the King of Curses, Ryomen Sukuna, who could dismantle his foes from afar, my technique required me to touch the canvas. If I could reach you, if I could place my hands upon you, I could completely dissect and dismantle your flesh, bone, and soul with a single touch. Combined with the Reverse Cursed Technique, which made me entirely unkillable by conventional means, I became a god among men. They feared me. They hated me because I was a woman who bowed to no king."
The atmosphere in your bedroom grew suffocatingly cold. The shadow seemed to weep dark violet energy as the memory approached its darkest hour.
"But even gods can be brought down by cowards who hunt in packs," Akane hissed, the raw, ancient trauma vibrating through your skull.
"They knew they could not defeat me in a fair trial of sorcery. So, five of the era's most powerful clan leaders conspired. One of them possessed a domain technique that could entirely suppress the flow of Reverse Cursed Technique, stripping me of my healing. They ambushed me. They pinned me down. And out of sheer, terrified spite... they sought to defile the woman they could not conquer."
You felt a phantom pain spike through your own body, a horrific echo of her final moments that mirrored the alleyway you had barely survived.
"They thought they had broken me. They thought they had won. But as I lay there in the dirt, bleeding and desecrated, a shadow fell over the grove. The air split open as the King of Curses himself descended upon us. Ryomen Sukuna had crossed our path."
A massive, terrifying silhouette appeared in your mind, a man with four arms and four eyes, radiating an aura so overwhelmingly malicious it made the air in your lungs turn to ice.
"He did not come to save me. Sukuna does not possess a shred of mercy. But he possessed a profound respect for strength, and he despised the pathetic, cowardly tactics of the clans. He slaughtered them all in a flash of crimson, leaving only their severed heads in the grass. Then, he looked down at me. He saw that my soul was shattered beyond the repair of any reverse technique. And so, the Lord Sukuna granted me a final, solemn coup de grâce. He drove his blade through my heart, a swift, honorable death to preserve the dignity of a warrior."
The visions abruptly snapped shut, leaving you gasping for air in your modern bed. The violet hue settled quietly back into your subconscious.
"As my life slipped away, I poured every single ounce of my remaining soul, my hatred, and my cursed energy into a binding vow. I refused to pass into the afterlife. I crystallized my spirit, waiting in the void for a thousand years... waiting for a woman whose despair matched my own, whose hatred was pure enough to act as a beacon. You begged for a demon to save you, and I answered. We are one now, young soul. Together, we shall do great things in this age. But do not forget... for your life to continue, there are conditions you must uphold."
You sat bolt upright in your bed, your chest heaving as the icy pressure of her memories finally receded. Your bedsheets were tangled around your legs, soaked in cold sweat.
This was a lot.
It was entirely too much for a brain that, up until seven days ago, only had to worry about managing restaurant inventory and making sure Yuji did his homework.
A demon inside you? Vengeful spirits? Cursed techniques? Ryomen Sukuna?
The names and terms sounded like a completely foreign language, fragments of a dark, twisted folklore you had never heard of.
You didn't understand a single ounce of the mechanics behind it, and yet, you couldn't deny reality. You could feel her. Akane had bared her true, horrific past to you, and that raw, ancient energy was now permanently woven into the fabric of your own soul. You could feel it humming just beneath your skin, heavy and dormant, like a coiled predator.
But beneath the confusion and the lingering echo of her trauma, a profound wave of realization hit you. You were alive. You were sitting in your own room, safe, whole, and breathing, because she had answered your plea.
She had saved you when the universe turned a blind eye.
You swallowed hard, your throat still raw and aching as you forced your voice into the quiet, empty bedroom.
Out of the millions of frantic questions bouncing around your head, one stood out above all the rest. The foundation of the vow you had blindly signed in the dark.
"What... conditions?" you whispered into the silence.
The shadow in the corner didn't move, but your own lips curved into a faint, unseen smirk as her deep, monstrously feminine voice echoed with chilling clarity directly inside your skull.
"Well, to kill men, of course."