Chapter Text
Okabe Rintaro stood on the roof of the Future Gadget Laboratory with his phone held to his ear and the line dead.
His lab coat snapped in the wind. Below him, Akihabara buzzed and shimmered in the afternoon heat. The traffic noise rose in bursts from the street, then thinned again. He narrowed his eyes at the empty blue sky as if it had personally insulted him.
"Assistant, report."
Silence.
"...No response. Naturally. The delta radar has yet to be completed."
He lowered the phone, then brought it back up at once, unwilling to let a nonexistent subordinate have the last word.
"They call the universe infinite because they cannot bear the alternative. Cowards. Everything that begins can end. Even this great cosmic farce."
A stairwell door banged open behind him.
"Okarin! There you are!"
Mayuri Shiina popped onto the roof, slightly out of breath, tote bag bouncing against her hip. Sunlight caught the edge of her hat. She squinted at him, then smiled like she had found a runaway balloon instead of a missing person.
"We're gonna be late."
"Late?" Okabe turned, offended. "Impossible. The plans of Hououin Kyouma account for all variables."
Mayuri blinked. "For the seminar."
The word landed. Okabe's pose faltered for half a second.
"Ah. The seminar."
Mayuri pointed at him. "See? I knew you forgot."
"I did not forget. I was conducting a rooftop observation of celestial conditions." He snapped his phone shut. "A necessary precaution before confronting a fraud who claims to have seized the secrets of time itself."
Mayuri clasped her hands. "So we should hurry, right?"
Okabe drew himself up and swept an arm toward the stairwell.
"Very well. To the battlefield."
He strode for the door. Mayuri followed, smiling to herself.
"You're in a good mood today, Okarin."
"Wrong. I am in a state of heightened vigilance."
"That sounds like a good mood for you."
He had no answer to that.
The lobby was loud with footsteps, conversation, and the clatter of shoes on polished tile. Posters for Dr. Nakabachi's seminar stood in chrome frames near the entrance. Men in office wear moved past girls with shopping bags and students with folded pamphlets tucked under their arms. Somewhere nearby, a vending machine thumped as it dropped a bottle.
Okabe slowed just enough to glare at the nearest poster.
Doctor Nakabachi: The Reality of Time Travel.
"Reality," he muttered. "A bold word for a man built on secondhand theories."
Mayuri looked up from her phone. "You've been excited about this all week. Why?"
"Because, Mayuri, there are moments when history loosens a single thread and allows the worthy to tug." He jabbed a finger at the poster. "Either Nakabachi will unveil a revolutionary discovery, or I will expose him as the charlatan he almost certainly is."
Mayuri tilted her head. "Those are very different outcomes."
"Science demands flexibility."
A low boom slammed through the building.
The floor jolted. Ceiling lights swayed. A murmur rolled through the lobby and broke into shouts.
Okabe's eyes widened. "What was that?"
People were already turning toward the stairwell, phones in hand, voices rising.
"An attack? Sabotage? A coded strike from the Organization?"
"Okarin!"
He was already moving. His shoes pounded up the stairs two at a time, lab coat flaring behind him. By the time he burst through the rooftop door, his breath was burning in his throat.
Something enormous sat embedded in the roof.
It looked like a satellite that had fallen out of the sky and punched straight through concrete. Scorched metal curved upward like torn armor. Heat shimmered above the hull. A burnt electrical smell hung in the air.
Okabe stopped dead.
"What...?"
He took one careful step forward. The metal skin was blistered black in places. Bolts the size of his fist jutted from broken panels. This thing had not been lowered here by crane. It had arrived.
His phone buzzed.
Okarin, where are you? Emergency. Come quick!
Mayuri.
Okabe looked from the message to the ruined machine and back again.
"At a time like this?"
The satellite did not answer. It sat in silence, half buried in the roof, impossible and solid.
"Fine. Remain where you are, unidentified object. Hououin Kyouma will return."
He spun and bolted for the stairs.
Mayuri stood by a bank of gacha machines, both hands on her bag, a tragedy in her eyes.
Okabe skidded to a stop in front of her. "What happened? Are you injured? Were there agents? Did someone threaten you?"
Mayuri pointed weakly at the machine.
"They only have the Upa series until today."
There was a beat.
Okabe stared at her. The machine whirred softly, packed with bright plastic capsules. A handwritten sign above it read LIMITED EDITION.
"I see," he said at last. "A grave crisis."
"I don't have a hundred yen." Mayuri looked at him with absolute seriousness. "And the Metal Upa is super rare."
Okabe exhaled through his nose, dug in his pocket, and pressed a coin into her palm.
"Take it. Fortune favors the prepared."
Mayuri's whole face lit up. "Thank you, Okarin!"
She fed the machine, turned the knob, and crouched for the capsule before it had even fully dropped. The clear plastic popped open between her fingers.
For a second, she just stared.
Then she squealed.
"It's the Metal Upa!"
She held it up to the fluorescent lights. The tiny silver figure flashed in her hand. Okabe had to admit it was better than the usual cheap plastic ones.
"Behold," he said. "A miracle too petty for science."
Mayuri laughed and hooked the little charm onto her bag zipper. The clasp slipped once under her fingers before catching.
"I got it, I got it..."
The PA system crackled overhead.
"Ladies and gentlemen, Dr. Nakabachi's seminar will begin in five minutes on the eighth floor."
Okabe straightened at once. "The hour has come."
Mayuri patted her bag, still smiling. "Let's go."
They headed for the hall with the stream of attendees.
The conference room smelled like carpet, ink, and too many people in one place. Okabe and Mayuri slipped into the back just as the lights near the podium brightened.
Mayuri stopped short and grabbed her bag.
"Okarin."
He turned. She was already digging through it.
"My Metal Upa's gone."
"What? You just attached it."
"I know!"
Her hands moved faster. Pouch, phone, handkerchief, empty capsule. No Upa.
"It probably fell near the door," Okabe whispered.
Mayuri looked near tears. "I'll go look. I'll be right back, okay?"
Before he could answer, she hurried out into the aisle and disappeared through the rear doors.
Okabe clicked his tongue and dropped into a seat. Onstage, Dr. Nakabachi walked to the podium with the heavy confidence of a man who expected applause for breathing.
"Ladies and gentlemen," Nakabachi began, "today I will speak of what lesser minds dismiss as fantasy."
Okabe slouched lower and picked up the handout left on the empty chair beside him.
Wormholes. Kerr black holes. Causal reversal. A familiar sequence of claims wrapped in dramatic phrasing. His eyes moved faster.
Then he stopped.
John Connor.
Not by name on the page, but close enough. The same structure. The same talking points that had spread through the network in those strange, obsessive posts attributed to a future soldier warning about the shape of wars yet to come. Nakabachi had sanded the language down, dressed it in academic clothes, and dragged it onto a stage.
Okabe raised his hand.
Nakabachi blinked, displeased. "Yes?"
"Doctor," Okabe said, standing without permission, "those theories sound awfully similar to the John Connor postings. Are you claiming them as your own?"
The room went quiet.
Nakabachi's face tightened. A few people turned in their seats.
"I do not know what childish nonsense you are referring to."
"Convenient."
A hand caught Okabe's sleeve and yanked.
"Come with me. Now."
He turned.
Red hair. Sharp eyes. Serious expression.
Kurisu Makise.
She pulled him out into the hallway before he could decide whether to resist.
The corridor outside was quieter, the seminar muffled behind the double doors. Kurisu released his sleeve and faced him with open irritation.
"What is wrong with you?"
Okabe pointed at himself. "Me?"
"Yes, you. First, you stop me downstairs and start ranting that something terrible is about to happen. Then you run off. Then you interrupt the seminar to pick a fight with Nakabachi."
Okabe froze.
"Downstairs?"
Kurisu frowned. "Don't tell me you forgot already."
"I never spoke to you downstairs."
"You did. About fifteen minutes ago."
The fluorescent lights buzzed overhead. Okabe stared at her.
He knew her name. He knew the face from the poster, from magazine articles, from endless breathless references to a teenage genius who had published papers people twice her age could barely follow. But there was something else under that recognition, something out of place, like he had stepped into the middle of a conversation and missed the first line.
"You're Makise Kurisu," he said slowly.
Her eyes narrowed. "How do you know that?"
"You were on the poster."
"That is not reassuring."
Okabe snapped his phone up to his ear on reflex.
"This is Hououin Kyouma. I have been detained by an unknown red-haired operative. Commence emergency countermeasures."
Kurisu stared at him.
"...Are you insane?"
Before Okabe could reply, the double doors at the far end of the corridor opened.
A man stepped through carrying a long white box filled with roses.
He was tall enough that the doorway seemed to shrink around him. Black leather jacket. Dark sunglasses. Expressionless face. He did not glance left or right. He only walked forward.
Each step landed at the same pace.
Tap.
Tap.
Tap.
The hallway suddenly felt too narrow.
Kurisu noticed him and shifted aside on instinct, more annoyed than alarmed.
The man stopped three meters away.
One gloved hand pressed into the bed of roses.
The flowers crumpled.
Metal moved under them.
He drew out a sawed-off shotgun.
For one disbelieving instant, nobody moved.
Then Kurisu sucked in a breath.
The gun fired.
The blast hit the corridor like a physical blow. Kurisu jerked backward and slammed into the wall. A dark bloom spread across the front of her shirt. Her body folded and struck the floor hard enough that Okabe heard the impact through the ringing in his ears.
The rose box tipped from the man's other hand. White petals scattered across the tile, streaking red where they touched her.
Okabe still had not moved.
Kurisu's eyes were open.
Blood ran in a widening line along the grout.
The man lowered the gun. No triumph. No hurry. No second look. He turned and walked back the way he had come with the same measured pace, stepping over the crushed roses as if he were crossing a puddle.
Okabe's breath came back all at once and tore out of him.
"No."
His knees hit the floor beside her. His hands hovered over her and failed to find somewhere safe to land.
"Makise Kurisu? Makise? Hey!"
No response.
Blood warmed the tile beneath her shoulder and crept toward his fingers.
Somewhere behind him, people started screaming.
The seminar doors burst open. Footsteps thundered. Voices piled up over each other.
"What happened?"
"Call an ambulance!"
"Was that a gunshot?"
Okabe stumbled backward, palms slick, vision tunneling around the red on the floor.
Kurisu lay where she had fallen, staring past him.
Dead.
The word would not fit in his head, but everything around him insisted on it.
He lurched to his feet and ran.
The city hit him with heat, noise, and sunlight.
Okabe burst out of the building and nearly collided with a pair of shoppers. Horns blared somewhere out in traffic. A truck engine rumbled. A shopkeeper shouted about sale prices like the world had not just split open.
His lungs burned. His hands shook so hard he nearly dropped his phone.
Kurisu was dead.
He could still hear the blast. Still see the spray of petals skidding across the floor. Still see the man walking away, machine-steady, like nothing human had happened behind him.
His thumb fumbled across the keypad.
To: Daru
Daru. Emergency. Makise Kurisu was shot. I saw it. Get to the lab. Something's wrong.
He hit send.
The world lurched.
Not inside him. Outside.
The noise around him dropped away as if someone had pulled a plug. For one terrible heartbeat, the street emptied of motion. Then sound rushed back in all at once, wrong somehow, shifted half a step out of place.
Okabe staggered and grabbed a guardrail.
The sunlight looked the same. The buildings looked the same.
Everything felt different.
"Okarin!"
He whipped around.
Mayuri was standing a few steps away, waving as if she had been there the whole time. Her bag bounced against her side. The Metal Upa was clipped to the zipper, flashing silver in the afternoon light.
Okabe stared at her.
"Mayuri...?"
She smiled, then her expression faltered. "What's wrong?"
He looked past her toward the Radio Building.
A crowd had gathered in front of it. People pointed upward, phones raised.
Not toward an ambulance.
Not toward police tape.
Toward the roof.
Okabe turned fully.
The satellite was still there.
Smoke-stained metal jutted from the top of the building, impossible and massive, while the crowd below buzzed with the excited confusion of people witnessing a spectacle.
No one was shouting about a murder.
No one was running.
No sirens.
A cold wave moved under his skin.
Mayuri tugged lightly at his sleeve. "Okarin?"
He looked down at his phone.
Message sent.
The screen showed it clearly.
Then the text flickered.
The sent icon vanished.
He stared.
"What...?"
Mayuri leaned in. "Did something happen?"
Okabe looked from the screen to the crowd, then back toward the building.
Corridor. Blood. Kurisu.
Satellite. Mayuri. Street.
Both sets of memories sat in his skull at once, grinding against each other.
"We're leaving," he said.
Mayuri blinked. "But the satellite..."
"We're leaving."
Something in his voice made her stop asking questions.
She nodded once. "Okay."
The shrine sat in a pocket of quiet just off the main road. Cicadas buzzed from the trees. The air smelled faintly of stone and warm leaves instead of exhaust and concrete.
Okabe braced both hands on his knees and tried to force his breathing back under control.
Mayuri hovered nearby, worried and patient.
"Okarin... did you fight with someone?"
He straightened too fast. "No."
"You look like you saw a ghost."
He laughed once. It came out thin.
"Hardly. Ghosts are simple."
Mayuri watched him for another second, then slipped a hand into her bag and pulled out a folded flyer.
"I found this on the ground near the stairs before we came outside," she said. "Maybe you dropped it."
She offered it to him.
It was the seminar handout.
Okabe took it.
The paper felt ordinary. Cheap. Real.
He scanned the printed text again.
Wormholes. Kerr black holes. Time displacement theory.
And there it was. Buried in the wording, smoothed over but unmistakable if you knew what you were looking for. The echo of those old online posts. That same future-war urgency is hidden under academic phrasing.
John Connor.
A few pages of fraud and theft.
Unless he had never heard them spoken aloud.
Unless the seminar had never happened.
Unless Makise Kurisu had never stood bleeding in that corridor.
The paper trembled in his hands.
Mayuri pointed at his phone. "Were you trying to call someone?"
"...Daru."
"Oh! Then call Daru-kun."
Yes.
Something solid. Something outside his head.
Okabe opened the phone, found Daru's number, and hit call.
Three rings.
Then:
"Yo."
The sheer normality of Daru's voice almost made Okabe dizzy.
"Daru," Okabe said. "Listen carefully. I need you to tell me exactly where you are."
A pause.
"...At my place? Why are you talking like a hostage negotiator?"
"Were you at the Radio Building today?"
"No? Why would I be? Seminar got canceled, remember?"
Okabe went still.
"What?"
"Because of the satellite thing." Daru sounded more confused by the second. "You seriously okay, man?"
Okabe's fingers tightened around the phone until the plastic creaked.
"No. No, that is incorrect."
"Good talk."
Okabe ended the call.
Mayuri looked up at him. "What did Daru-kun say?"
He looked past her toward the city, where the satellite was hidden behind layers of buildings and heat haze.
"He said the seminar was canceled."
Mayuri blinked. "Wasn't it?"
Okabe stared at her.
She tilted her head. "We went to see the satellite, right? Then you got all weird."
The world gave another slow, sickening turn inside his chest.
"No," he said quietly. "No, that isn't..."
His voice failed.
Mayuri's smile had faded completely now. She stepped closer and touched his sleeve.
"Okarin."
He looked at her hand, then at the silver Upa hanging from her bag.
"You found it."
"Hm?"
"The Metal Upa."
She brightened a little, confused by the change in subject. "Yeah. It was by the stairs."
By the stairs.
Not in the hall.
Not after the seminar.
By the stairs.
He shut his phone and shoved it into his pocket.
"Let's go back to the lab."
She hesitated, then nodded and fell into step beside him.
They walked home through the usual noise of the district, but every sound felt one layer off. A bicycle bell rang behind them. A maid in a pink apron handed out flyers. The smell of frying oil drifted from a side street.
Mayuri glanced at him every few steps.
"Okarin?"
"Hm."
"Are you sick?"
"No."
"You look sick."
Okabe forced a laugh that convinced neither of them. "I am merely engaged in high-level thought."
"Mmm." She watched him a moment longer. "Okay."
Her bag brushed her hip as she walked. The Metal Upa tapped softly against the zipper.
Okabe heard it every time.
The lab door creaked open. Familiar clutter met him all at once: wires hanging off the workbench, half-finished gadgets, the faint smell of solder, dust warming on old electronics.
Home. Supposedly.
Mayuri slipped off her shoes and headed for the kitchenette.
"I'll make tea."
Okabe sat at his desk and set his phone down beside the keyboard.
Makise Kurisu was dead.
He had seen the blood. He had heard the gunshot. He could still smell it if he concentrated.
He picked up the phone again.
Sent mail.
The message to Daru was there.
No. It wasn't. He checked again. Different folder. Same result. Nothing.
His thumb hovered over the keypad.
From the kitchenette came the sound of water filling the kettle, the click of the switch, and cupboard doors opening and closing.
"Okarin, green tea is okay?"
"Yes."
His own voice sounded far away.
Mayuri carried in two cups on a tray and set one by him with careful hands.
"Here you go."
Steam curled up between them. Okabe wrapped both hands around the cup just for the heat.
Mayuri sat across from him and tucked her feet under her chair.
For a while, neither spoke.
Then Okabe said, "Mayuri... if the world changed, would you notice?"
She blinked.
"Like if the stars moved?"
"Something like that."
Mayuri thought seriously about it. "Maybe not right away."
Okabe looked up.
"But if you were still there," she said, "I'd notice you acting weird."
He let out a breath that might have been a laugh.
"What a terrifying observational method."
She smiled a little. "It's a good one."
The kettle's warmth faded from his palms. The phone sat beside the cup, mute and accusing.
The door banged open.
"Yo! Your resident super hacker has arrived."
Daru shuffled in with chips under one arm and a plastic bag of drinks dangling from two fingers. He stopped just inside and looked from Mayuri to Okabe.
"...Whoa. What happened in here? Did somebody die?"
Okabe's grip tightened on the teacup.
Mayuri answered first. "Okarin's been acting strange since we got back."
"More strange than usual?"
"Yes."
Daru set the snacks down. "Impressive."
Okabe stood too quickly, chair legs scraping the floor. "Daru. When did you get my message?"
"My message?" Daru frowned. "What message?"
Okabe opened his mouth, then stopped. His own pulse thudded once, hard.
"Never mind."
Daru looked at Mayuri. "Yeah, that's not ominous at all."
Mayuri puffed out her cheeks. "Don't tease him."
"I'm not teasing. I'm assessing maximum chuuni output."
Normally, that would have earned a retort. Okabe barely heard him.
On the workbench in the corner sat the old microwave, cables still trailing from one side where Daru had been fiddling with it the week before. Okabe's eyes snagged on it and stayed there for a moment.
He did not know why.
To give his hands something to do, Okabe grabbed the remote and switched on the television.
Static snapped, then a news anchor appeared.
"...authorities continue to investigate the unidentified object lodged in the Akihabara Radio Building this afternoon. No fatalities have been confirmed. Structural analysts say the object resembles part of a communications satellite..."
Video rolled behind the anchor.
The building.
The wreckage.
The crowd below it.
Okabe stood up so abruptly that the chair tipped.
"No."
Daru looked at the screen. "Yeah, the satellite thing. Crazy, right?"
Mayuri nodded. "It was super loud."
Okabe turned to them. "The seminar. Nakabachi's seminar was there."
Daru stared. "It got canceled."
"What?"
"Because of the crash," Daru said. "You know. The thing on the TV."
Okabe felt the room tilt.
"No. We went inside. The seminar happened. Nakabachi was speaking. He was stealing from the John Connor postings."
Daru gave him a long look. "Dude. You mailed me that the seminar was canceled. That's why I didn't bother going over there."
Mayuri hugged her cup with both hands. "Okarin, we went to look at the satellite. Remember? I thought I lost my Metal Upa on the stairs, and then you found it for me."
The cup in Okabe's hand clicked against the saucer.
Conference hall. Corridor. Kurisu on the floor.
Canceled seminar. Stairs. Satellite.
None of it matched.
On the television, the anchor continued.
"...market analysts also noted unusual movement today after reports that Cyberdyne Systems and SERN may expand an existing research partnership. Neither company has offered further comment..."
The story changed before Okabe could fully process the names. But they stuck anyway. Cyberdyne. SERN.
Something about them fit too neatly with the cold shape now lodged in his memory.
"Okarin?" Mayuri said softly.
He realized he was breathing too fast.
"Daru," he said, "show me the email."
Daru dug out his phone.
"Okay, now you're really creeping me out."
He tapped through his inbox and handed it over.
The message on the screen was unmistakably Okabe's style, pompous flourishes and all.
The seminar has been canceled. Do not approach the Radio Building. The situation reeks of conspiracy. Maintain current position until further instructions.
-Hououin Kyouma
But the timestamp punched the air out of him.
Five days ago.
He looked again.
Five days ago.
"That's impossible."
Daru took the phone back. "I mean, unless you invented time mail while I wasn't looking."
Okabe snatched up his own phone and checked his sent mail again. Nothing. No trace of it.
"It isn't here," he said.
"What isn't?" Mayuri asked.
"The message. The one he got. I sent it, and I didn't send it."
Daru folded his arms. "Okay. That sentence sucked."
"I am aware!"
The lab lights blinked once.
Then they went out.
Mayuri made a small sound in the dark. Something toppled off a shelf. Daru swore, fumbled near the power strip, and the lights flickered back on.
For that one black second, Okabe had seen the corridor again.
Roses on the floor.
Kurisu's open eyes.
The man walking away.
He grabbed the edge of the table to steady himself.
Daru's expression had shifted. Less joking now. "Hey. Sit down."
Okabe didn't.
"No. Listen to me. Something happened. The seminar happened. Kurisu Makise is..." His throat closed. He forced the words out. "I saw her die."
Silence.
Mayuri's hands tightened around her cup. Daru stared.
Then Daru said, carefully, "Okabe. Makise Kurisu is alive."
The room went very still.
"That is not possible."
"She is," Daru said. "She's speaking at the college forum tonight."
Okabe looked up.
"What?"
Daru pointed at a flyer half-buried under junk on the desk. "The one we're supposed to go to. You forgot already? Guest panel, young researchers, startup funding, blah blah. Makise is on it."
Mayuri nodded. "You and Daru-kun were going after dinner."
Alive.
The word was absurd. Impossible. And suddenly more compelling than fear.
Daru rubbed the back of his neck. "Look, man. If you're freaking out this much, maybe skip it."
"No."
The answer came too fast.
Daru lifted a brow. "No?"
Okabe straightened slowly. His breathing had steadied. Not because he understood anything. Because he had found the only next step he could survive.
"If Makise Kurisu is alive," he said, "then I will verify it myself."
Daru let out a long sigh. "There it is. Full mad scientist mode."
"Call it what you like."
Mayuri looked between them, worried, but she did not argue.
Daru was already winded by the second block.
"Why," he demanded, "is every important event in this city either uphill or far away?"
Okabe barely heard him. Neon signs bled into the dusk around them. Crowds thickened near the station. Somewhere behind them, a pachinko parlor jingle started up, loud and cheerful and unbearable.
Alive.
The word kept circling back.
Daru nudged him with an elbow. "You planning to say anything, or am I escorting a ghost?"
Okabe came back just enough to answer. "Physical exertion sharpens the mind. You should be thanking me."
"I'm thanking you with my last breath, apparently."
The venue lobby was all glass, steel, and polished stone. Nothing creaked. Nothing cluttered. Okabe hated it instantly.
They waited in front of the elevator with a half-circle of strangers in business attire and conference badges. A wall-mounted screen cycled through speaker names and schedules.
Makise Kurisu.
The letters were clean and undeniable.
The elevator chimed and opened. Daru stepped in first. Okabe followed without taking his eyes off the screen until the doors began to close.
A hand slipped through the gap.
The doors jerked back open.
She stepped inside, slightly out of breath, one hand on the strap of her bag.
Kurisu.
Alive. Unhurt. No blood. No torn shirt. No roses on the floor.
She brushed a strand of hair behind one ear and glanced up, annoyed at the cramped space, then noticed Okabe staring at her like he had seen a corpse climb out of the ground.
"...What?" she said.
The doors slid shut.
For once in his life, Okabe had nothing. No pose. No proclamation. No lie big enough to stand between him and what he was seeing.
He could only stare as the elevator began to rise.