Monday morning. Class 1-A buzzed with excitement.
"Field trip!"
"Rescue training!"
"This is gonna be awesome!"
Rei sat quietly by the window, watching his classmates chatter. Children excited for a school trip. None of them knew what was coming.
'Innocence.' He'd never had it, even in his first life. By fifteen, he'd already killed three people.
These kids thought hero work was rescue training and sports festivals.
Today, they'd learn different.
Aizawa entered. "Get your costumes. Bus leaves in ten minutes."
The class scrambled. Rei moved efficiently, grabbed his case, changed in silence.
The Advanced Suit settled over his skin like a second nervous system. Black and white. Designed for war.
He pulled the mask on. The lenses activated, HUD displaying vitals and environmental data.
'Ready.'
---
The bus ride was chaos.
Students talked over each other. Tsu analyzed Quirks. Kirishima complained about not being flashy. Bakugo scowled at everyone.
Rei tuned it out. His mind ran through scenarios, calculating variables, preparing for violence.
Momo sat across the aisle. She caught his eye once—brief, questioning. He gave a subtle nod.
'She knows something's different about me today.' Perceptive as always.
The bus stopped. USJ loomed ahead—massive dome, imposing architecture.
'Here we go.'
Inside, Thirteen waited. Space suit. Cheerful voice. Rescue hero.
"Welcome to the Unforeseen Simulation Joint!" Thirteen's enthusiasm was genuine. "I created this facility to train you in disaster scenarios!"
The class spread out, gawking at different zones. Flood, landslide, fire, collapse.
"Your Quirks are powerful," Thirteen continued. "But they're also dangerous. My Black Hole can save lives by clearing debris. It can also kill instantly if used wrong. Today is about learning control, about—"
The lights flickered.
Rei's spider-sense screamed.
The fountain erupted with black mist.
'There.'
Dozens of figures emerged from the portal. Villains. Different Quirks, different builds, all hostile.
At the center: Kurogiri and Shigaraki.
"Greetings," Kurogiri's voice echoed. "We are the League of Villains. We've come to kill All Might."
The class froze.
Aizawa moved immediately. "Thirteen, evacuate them. Contact the school."
"Sensei, you can't fight alone—"
"Go!" Aizawa's capture weapon unfurled. Erasure activated.
He launched into the horde.
Rei watched with professional detachment. Aizawa was skilled—underground hero, experienced, efficient. He took down ten villains in five seconds.
But there were fifty more.
'He'll lose. Just a matter of time.'
Kurogiri expanded, surrounding the class.
"I'm afraid I can't let you leave."
Thirteen activated Black Hole. The suction pulled at the mist.
Kurogiri simply moved around it. "Impressive. Insufficient."
The mist enveloped everyone.
Rei felt the teleportation pull. Disorienting. Nauseating.
Then he was falling.
Web-line. Anchor. Land.
Water. Ships. Flood Zone.
Midoriya and Tsu materialized nearby.
"Mizuki!" Tsu called. "Are you okay?"
"Fine." Rei scanned the area.
Villains in the water. Dozens. Aquatic mutations. Sharks, eels, octopi.
They started circling. Predators sensing prey.
"There's too many," Midoriya said, hands shaking. He couldn't use One For All without destroying himself.
"Stay behind me." Rei's voice was flat.
"What? Mizuki, we should—"
Three villains lunged from the water simultaneously.
Rei moved.
Spider-sense screamed warnings. Left, right, center. His body flowed through the attacks like water.
Duck. Dodge. Counter.
His fist caved in the first villain's jaw. Webbing yanked the second into a knee strike. A spinning kick sent the third flying thirty meters back.
All three down in two seconds.
Midoriya and Tsu stared.
"How did you—"
"Move to the Ship. Right Now."
Rei didn't wait for acknowledgment. He fired a web-line and swung toward the wrecked vessel, landing on the tilted deck.
Midoriya and Tsu followed.
More villains climbed from the water. Twenty. Thirty. Forty.
"We're surrounded!" Tsu's voice stayed calm despite the panic in her eyes.
Rei's mind calculated. Forty hostiles. Aquatic advantage. Limited space.
'Acceptable odds.'
He fired webs in rapid succession—not at villains, but at the ship itself. Creating a network. A web across the entire deck.
"What are you doing?" Midoriya asked.
"Trap."
The first wave reached the deck. Got tangled immediately.
"Now," Rei said.
Tsu's tongue lashed out, knocking stuck villains into the water.
Midoriya landed precise strikes on immobilized targets.
But more kept coming.
Rei dropped into the center of the web network and let his spider-sense guide him.
A villain with blade arms attacked from behind. Rei felt it before it happened. Dodged left, webbed the blades, yanked the villain off balance, kicked him off the ship.
Three more charged together. Spider-sense screamed multiple warnings.
Rei's body flowed. Duck under the first. Web-pull the second into the third. Flip over both. Double kick to their backs. Both down.
Five more. Ten more.
His movements became a blur. No wasted motion. Every strike precise. Every dodge calculated.
This was what forty-three years of killing looked like with Spider-Man powers.
Unstoppable.
A villain with an electric Quirk tried to shock the web network. Rei had already moved, wall-running up the ship's mast, firing webs mid-run to restrain him.
Two villains with projectile Quirks attacked from range. Spider-sense tracked both trajectories. Rei dodged, caught one projectile mid-air, threw it back, webbed the second villain's face.
The assault continued for two full minutes.
When it ended, forty villains lay unconscious across the flood zone. Some webbed to the ship. Some floating in the water. Some simply knocked out cold.
Rei stood on the ship's deck, breathing steady, not a scratch on him.
Midoriya and Tsu stared in absolute shock.
"Mizuki..." Midoriya's voice was barely a whisper. "How did you do that?"
Rei turned. Behind the mask, his expression was cold.
"Prepared."
Across the USJ, in different zones, the rest of Class 1-A was fighting for survival.
Bakugo and Kirishima demolished villains in the Collapse Zone.
Todoroki froze an entire army in the Landslide Zone.
Momo created weapons and led her group to safety.
And in the central plaza, Aizawa fell.
The Nomu's fist cracked into his arm. Bone shattered. Capture weapon torn. Erasure deactivated.
Shigaraki's hands closed around Aizawa's face, disintegration starting.
'All according to plan,' Rei thought from across the USJ. 'All Might will arrive. Nomu will fight. Everyone survives.'
But his spider-sense was screaming.
Not about the villains in the Flood Zone. They were finished.
About something else. Something wrong.
'Timeline's shifting,' Rei realized. 'My presence already changed variables.'
In the plaza, Shigaraki looked around with child-like confusion.
"Where's All Might? He should be here by now."
Kurogiri appeared beside him. "Perhaps our information was incorrect."
"No." Shigaraki scratched his neck frantically. "He's supposed to be here. That's the plan. That's—"
His eyes locked onto the central fountain area.
Where several students were regrouping.
Where Momo was organizing a defense.
"Fine," Shigaraki's voice turned dark. "If All Might won't come to us, we'll give him a reason."
He pointed at the students. "Nomu. Kill them all."
The Nomu moved.
Faster than anything that size should move. Its exposed brain pulsed. Muscles rippled.
It charged straight at Momo's group.
'Shit.' Rei's spider-sense exploded. 'That's different. That's not supposed to happen.'
He'd changed something. Just by existing. Just by being here.
And now Momo was in direct danger from a monster that could trade blows with All Might.
Rei made a decision.
He launched himself off the ship, firing a web-line toward the central plaza, building momentum with each swing.
'Hold on,' he thought, moving faster than he'd ever moved. 'Just hold on.'
The Nomu's fist rose, aiming for Momo.
And Rei Mizuki, the assassin with Spider-Man like powers, pushed his body to its absolute limit.
Because changing the timeline or not—he wasn't letting her die.
----
Real Action begins 🥀