"Yuta is a fraud. Change my mind."
Shinra leaned back in his creaky office chair, the worn-out cushion doing absolutely nothing to support his lower back. He'd had this chair since he was sixteen, and it had long since surrendered any pretense of ergonomic functionality. Much like his life, really.
He scrolled through the thread, a tired smile tugging at his lips despite the hour. It was 2:47 AM on a Tuesday, and here he was, reading grown adults argue about the power scaling of fictional sorcerers. The usual suspects were out in full force, Gojo stans fighting for their lives against Sukuna glazers, someone claiming Hakari was actually top three, the obligatory "Toji negs" comment that started a forty-reply flame war.
God, I love this fandom, Shinra thought. Absolute circus.
His apartment, if you could call a converted garage an apartment, smelled like instant ramen and regret. The walls were thin enough that he could hear his neighbor, Mr. Tanaka, snoring through the wall. The snoring was rhythmic. Comforting, even. Some things never changed.
Unlike everything else in his life.
Shinra's eyes drifted from the screen to the small altar in the corner of the room. A framed photograph sat there, slightly crooked, next to an incense holder that hadn't been used in months. The photo showed an old man with a kind face and mischievous eyes, his arm wrapped around a gangly thirteen-year-old version of Shinra, both of them grinning at the camera like they'd just pulled off the world's greatest prank.
Gramps.
The smile on Shinra's face softened into something more complicated. Three years. Three years since that heart attack had taken the only person who'd ever really given a damn. On his eighteenth birthday, no less. The universe had a sick sense of humor.
Probably got it from Gege, Shinra mused. That bastard loves killing off characters on their birthdays. Or right when they're happy. Or, you know what? Just in general. The man wakes up and chooses violence daily.
He glanced back at his screen, where someone had just posted a detailed breakdown of why Gojo's death was actually "narrative perfection."
"Narrative perfection my ass," Shinra muttered. "You let that man get off-screened and turned into a Kit Kat bar and call it perfection? Gege, I love you and I hate you. Mostly hate you right now. Give me back my goat."
The manga had ended two weeks ago. Shinra had read the final chapter five times, hoping each time that maybe, just maybe, he'd misread it the first four times. He hadn't. Sukuna won. Well, technically "everyone won" in that typical shonen friendship-power way, but at what cost? Gojo was dead. Nanami was dead. Yuki was dead. Geto was dead (again). Nobara got off-screen treatment for half the series. Hell, even Kashimo died, and he was introduced like thirty chapters before the end.
Gege really looked at his character roster and said, "You. You. You. And especially you. All of you. Die."
Shinra stretched, his spine popping in four different places. Twenty years old and already falling apart. Fitting.
His phone buzzed, a reminder he'd set earlier: Eat something, dumbass.
Right. Food. He'd been so deep in the fandom discourse that he'd forgotten his body's basic requirement of sustenance. Classic Shinra move.
He grabbed his wallet from the cluttered desk, shoving it into the back pocket of his jeans. The jeans were old, faded, and had a small hole in the left knee that he kept meaning to patch but never did. His hoodie was worse, a faded black thing with "JJK" printed on it in letters that were now more crack than fabric. Gramps had bought it for him. Three sizes too big back then. Now it fit perfectly.
Some things don't last long enough, he thought, pulling the hoodie over his head. Others last too long. Like me, apparently.
The night air hit him like a gentle slap as he stepped outside. Late autumn in his part of the city meant cold enough to need a jacket but not cold enough to justify the effort of actually finding one. The streets were empty at this hour, just the occasional car and the distant bark of a dog. Streetlights flickered overhead, casting pools of orange light on the cracked sidewalk.
Shinra walked the familiar route to the 24-hour convenience store two blocks down. He'd walked it a thousand times. Probably more. Past the abandoned lot where kids used to play. Past Mrs. Kim's house with the creepy garden gnomes. Past the spot where...
He stopped walking.
The spot where his best friend, Kenji, used to wait for him after school. They'd walk home together every day, talking about nothing and everything. Anime. Video games. Which teachers sucked the most. What they wanted to be when they grew up.
Kenji wanted to be a firefighter. "Help people," he'd said, shrugging like it was no big deal. "Seems like a good thing to do."
He'd lasted eight months after the diagnosis. Stage four neuroblastoma. They said he never had a chance.
Shinra stood there for a long moment, the wind picking up and cutting through his thin hoodie. He could still see Kenji's face, that stupid grin, the way his eyes would light up when he talked about the latest chapter of My Hero Academia.
"You gotta live for both of us now, yeah?" Kenji had said, his voice weak, his hand cold in Shinra's grip. "Make it count."
Shinra exhaled, watching his breath mist in the air.
"Sorry, Kenji," he whispered. "Haven't really done that, have I?"
He started walking again, shaking off the memories like water. The store was just ahead, its fluorescent lights a beacon in the darkness. Shinra pushed through the doors, the automatic chime announcing his arrival like he was some kind of VIP. The cashier, a bored-looking college student probably three years younger than him, glanced up, then back at his phone.
Shinra grabbed a basket and made his rounds. Instant ramen (three packets, variety pack). Rice balls (tuna mayo, his favorite). A sad-looking bento box that was probably older than some of the cashier's TikTok followers. And, because he was an adult with disposable income and zero impulse control, a random assortment of snacks that caught his eye.
Gramps would kill me if he saw my diet, Shinra thought, tossing a bag of chips into the basket. "You eat like a raccoon with a credit card," he'd say. Then he'd make me actual food. Real food. With vegetables and shit.
The memory hit harder than it should have. Shinra blinked rapidly, focusing on the snack aisle like it held the secrets of the universe.
Stop it. He's gone. They're all gone. You're fine. You're...
His phone buzzed. Another reminder: BRO YOU WERE SUPPOSED TO EAT LIKE AN HOUR AGO.
Right. He'd set that. Good job, past Shinra. Very helpful.
He paid for his groceries, ¥1,847 total, which was more than he meant to spend but less than he'd expected, and stepped back out into the night. The cashier didn't say goodbye. They never did.
The walk back was quicker. Shinra's mind was already on the warm ramen waiting for him, maybe another hour of scrolling through fandom drama before finally passing out and doing it all over again tomorrow. The same routine. The same nothing. The same...
Headlights.
Blindingly bright. Too close. The screech of tires that meant nothing because there wasn't enough distance to stop.
Shinra's brain had exactly enough time to process one thought before impact:
Of course. Of fucking course.
---
CRASH.
---
"Ugh..."
The first thing Shinra noticed was that he shouldn't be conscious. The second thing he noticed was that he shouldn't be able to think that thought if he was dead.
The third thing he noticed was that he was floating.
Or sitting? No, definitely floating. In darkness. Complete, total, absolute darkness. The kind of darkness that felt less like absence of light and more like presence of nothing. Like the universe had forgotten to render this part of existence.
"Am I in the backrooms or something?" Shinra muttered, his voice echoing strangely. "Did I get isekai'd to a creepypasta instead of a..."
"You're not in the backrooms."
Shinra spun around, or tried to, floating made direction complicated, and found himself face to face with...
A twelve-year-old.
A twelve-year-old kid in a hoodie that was somehow both too big and too small at the same time, sitting cross-legged on nothing, scrolling through what looked like an iPhone that definitely shouldn't work in a void of nonexistence. The kid had a bored expression that suggested he'd rather be anywhere else, doing anything else, and was only barely tolerating the current situation out of some vague sense of obligation.
"Uh," Shinra said, eloquently.
The kid didn't look up. "Uh yourself."
"What, where, how, who..."
"Questions. So many questions." The kid sighed, finally glancing up from his phone. His eyes were old. Like, really old. The kind of old that made you feel like you were looking into the eyes of something that had watched civilizations rise and fall like mayflies. "I'm the one your kind likes to call ROB. Random Omnipotent Being. Though honestly, I hate that acronym. Makes me sound like I'm gonna steal your liver or something."
Shinra stared.
The kid stared back.
"I'm dead, aren't I?" Shinra said.
"Yep." The kid, ROB, apparently, popped the 'p' like he was announcing the weather. "Truck-kun got you. Classic isekai initiation. Honestly, I'm a little disappointed. Very predictable exit, if you ask me."
"Truck-kun," Shinra repeated flatly.
"Don't blame me, I don't run the transportation department. Different cosmic entity entirely. I'm just here to process your case." ROB swiped at his phone, pulling up what looked like a spreadsheet. "Let's see... Shinra Tanaka. Age twenty. Parents divorced age seven. Best friend died age fifteen. Grandfather died age eighteen on your birthday. Current employment: part-time convenience store clerk. Current hobbies: anime, manga, arguing with strangers online about fictional characters." He looked up. "Your life was kinda sad, tbh. Nothing interesting. No real accomplishments. No relationships. Just... existing."
Shinra felt something twist in his chest. "Thanks for the recap. Really feeling the cosmic compassion here."
"I'm not here for compassion. I'm here for paperwork." ROB's expression shifted slightly, still bored, but with a hint of something else. Something almost like pity. "Look, normally I'd just process your soul for reincarnation and call it a day. Standard procedure. But I've got a problem."
"What kind of problem?"
"The boredom kind." ROB put down his phone. "I've been doing this for billions of years. Billions. You know how many souls I've processed? More than there are grains of sand on every beach in every universe combined. After a while, it all blurs together. Birth, life, death, repeat. Same stories, different faces. I'm dying of boredom here, and I'm literally immortal."
Shinra blinked. "So... what? You want me to entertain you?"
"Now you're getting it." ROB snapped his fingers, and suddenly they were sitting across from each other at a small café table that definitely hadn't been there a second ago. The void around them remained, but now there was coffee. ROB took a sip. "I can send you to any world you want. Any universe, any timeline. But here's the twist, you only get one wish. And before you ask, no, you can't wish for more wishes. That's the only rule."
Shinra stared at the coffee that had materialized in front of him. It was his usual order. The exact way he liked it. He didn't drink it.
"Any world?"
"Any world."
"And I get one wish?"
"One wish. Choose wisely."
Shinra's mind raced. This was insane. This was absolutely, completely, utterly insane. He was dead and talking to a bored cosmic entity who looked like a middle schooler, and he was being offered a second chance. A real second chance.
Make it count, Kenji's voice whispered.
Shinra thought about his options. He could go somewhere safe. Somewhere easy. A slice-of-life world with no real danger, just peace and quiet. He could finally have the life he never got, family, friends, love. He could...
No.
No, that wasn't him. That had never been him.
"I want to go to Jujutsu Kaisen," he said.
ROB raised an eyebrow. "The death world? The one where the author actively hates his characters and kills them for fun? That's your choice?"
"Gege can't hurt me if I'm in the world. Probably." Shinra shrugged. "Look, that series got me through some dark times. The characters, they felt real. They felt like people I could've known. People worth fighting for. I want to meet them. I want to help them."
"Help them." ROB's tone was flat. "You're a baseline human with zero cursed energy and zero combat experience. You'd last approximately three seconds against the weakest curse in existence."
"That's where the wish comes in."
"Ah." ROB leaned forward, interested. "Go on."
Shinra met those ancient eyes. "I wish for your help."
For the first time since this conversation started, ROB looked genuinely surprised. His bored expression cracked, replaced by something like confusion mixed with reluctant respect.
"My help?"
"Not power. Not instantly. Just... help." Shinra spread his hands. "You said you're bored. You said you want entertainment. So be my system. Give me missions. Give me challenges. Reward me when I complete them. You get your entertainment, I get to actually survive long enough to make a difference. Win-win."
ROB was quiet for a long moment. Then, slowly, a grin spread across his twelve-year-old face. It was the first genuine expression he'd shown.
"That's... actually clever." He leaned back, crossing his arms. "Most people wish for power. Or harem abilities. Or infinite money. They think small. But you? You wished for a partnership. For ongoing support. For someone to have your back." He nodded slowly. "I like it."
"So you'll do it?"
"I'll do it." ROB held up a finger. "But I can't directly interfere. That's against the rules, different cosmic entity, long story, don't worry about it. What I can do is act as your system. I'll assign missions, provide rewards, and occasionally offer advice. Think of me as the world's most overpowered GPS. Deal?"
Shinra extended his hand without hesitation. "Deal."
They shook. ROB's grip was surprisingly firm for a kid.
"Oh, and one more thing," ROB added. "Since I'm feeling generous, and since your last life was genuinely depressing, I'll give you a starter pack. Nothing crazy, just enough to keep you from dying immediately. Cursed energy manipulation at a beginner level, You'll have to earn the rest."
"That's..."
But Shinra never got to finish the sentence. The void around him dissolved, the café table vanished, and darkness swallowed him whole.
One more thing, ROB's voice echoed as consciousness slipped away. Welcome to hell, kid. Try not to die too fast. That wouldn't be entertaining at all.
---
Shinra woke up with the mother of all headaches.
Note to self, he thought groggily, dying and being reincarnated gives you one hell of a hangover.
He was lying on something soft. Grass? No, too even. Pavement? Too soft. He cracked open an eye and immediately regretted it as sunlight stabbed directly into his brain.
"Ow. Fuck. Why."
A voice spoke in his head, young, bored, vaguely amused. Language. You're in a sacred place. Well, relatively sacred. Mostly just old and full of sorcerers who'd kill you for swearing near their precious school.
Shinra sat up so fast his vision swam. "ROB?"
The one and only. Welcome to Jujutsu High. Well, technically the road leading to Jujutsu High. You're about fifty meters from the main gate. Stand up, you look pathetic down there.
Shinra stood, wobbling slightly. He was on a path, a proper stone walkway flanked by ancient trees that looked like they'd been here since before his great-grandparents were born. The air was crisp, clean in a way city air never was, and carried the faint scent of incense and something else, something that made his skin prickle with awareness.
That's cursed energy, ROB supplied. You're sensing it now. Congrats, you're no longer spiritually blind. Try not to throw up, the adjustment period can be rough.
Shinra took a breath. The world felt... different. Fuller. Like he'd been watching everything on a small screen his whole life and someone had finally let him see it in person. Colors seemed brighter, sounds sharper, and there was a weight to the air that hadn't been there before.
Check your pockets.
He did. Inside his hoodie, the same hoodie, he realized, the one Gramps had given him, still faded, still worn, was an envelope. Thick, official-looking, sealed with red wax stamped with a symbol he recognized from the manga: the crest of the Tokyo Metropolitan Curse Technical College.
Admission letter. Complete with forged signatures from the higher-ups. They think you're some distant relative of a clan that owes them a favor. Don't worry about the details, I handled it. Now get moving, you've got a schedule to keep.
Shinra stared at the envelope. At the trees. At the sky that was definitely the same sky he'd always known but felt completely different now.
"This is real," he murmured. "This is actually real."
As real as anything else in this insane universe. Now walk. You're about to meet someone important, and I want to see his face when he sees you.
Shinra pocketed the letter and started walking. Each step felt momentous, like he was walking toward something that would change everything. Because he was. Because this was Jujutsu Kaisen. This was the world where people died horribly and beautifully, where curses were born from human negativity, where a guy with white hair and a blindfold was basically a god pretending to be a teacher.
ROB's voice interrupted, the timeline's a little different here. You've got about three days. I fudged the numbers a bit, wanted to give you time to settle in before the chaos starts. You're welcome.
only 3 days to figure out how to survive in a world where death lurked around every corner, where even the strongest could fall, where a man named Gege had written tragedy after tragedy and called it art.
Not this time, Shinra vowed. Not if I can help it.
The trees thinned, and suddenly he could see it, the gate. The famous gate of Jujutsu High, the one that had appeared in so many panels and episodes. Ancient wood, massive structure, torii gates flanking the entrance like silent guardians. It was imposing. It was beautiful. It was real.
Shinra stopped walking, letting himself just... look.
I'm here, he thought. I'm actually here.
And then he saw him.
A figure was walking toward the gate from the other side, tall, dark-haired, dressed in the familiar Jujutsu High uniform. He moved with a purpose, his expression blank in that way that masked deeper thoughts. Even from this distance, Shinra recognized him instantly.
Fushiguro Megumi.
Ten Shadows user. Potential rival to Gojo. The guy who'd eventually summon Mahoraga and almost die for his trouble. The guy who was currently walking directly toward the gate, toward Shinra, toward the moment that would change everything.
Showtime, ROB whispered.
Shinra took a breath. Adjusted his hoodie. Started walking.
The gate loomed ahead. Megumi drew closer.
And in that moment, suspended between one world and another, Shinra Tanaka, former convenience store clerk, former orphan, former nobody, stepped into his new life.
---
[END CHAPTER 1]
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A/N: yoo wsg y'all, hope your day is going well and stuff, the first few chapters of this fanfiction will be Long because I wanted to cover the 15K mark early.