A/N: Enjoy the double chapter update since I've been gone! Time for some real plottening.

Also I for some reason had people calling her Mei this whole time, when everyone calls her Hatsume— Whoops. From Ch. 12 on itll be Hatsume, but Ill edit previous chapters eventually!

Chapter Thirteen - Lockdown

As the students started their second week of classes, a major event was kicked into motion, one that would shook U.A to his core.

The day started like any other for Class 1-H. Their class representative, chosen a few days prior by nearly unanimous decision, approached the front of their homeroom. Izuku looked up at him with a small smile, feeling like they couldn't have a more fitting rep.

Yuki looked around at them seriously, with their teacher, Power Loader, to his side.

"There was a breach of security the other day," Yuki began. "Somehow, the front gate that shut out the press, well, it got destroyed— Crumbled to dust. And they don't think a simple press member could do that."

Everyone was surprised by this. Last week, the alarms had sounded and everyone panickingly tried to flee the building. It ended up just being the press, who desperately wanted to ask about All Might and his role as a teacher there, and were crowded around at the front.

I remember hearing how tight security is here, Izuku thought to himself. Lots of motion sensors and automatically-locking metal gates everywhere… But Someone managed to destroy it so easily and get away with it?

"The Support Classes have been asked to work on this matter as a matter of high importance," Yuki told them.

"Hey, why's this the first time we've heard of the breach?" It was Shiro who interjected, as she stood on her chair, waving her hand around to make up for her shortness.

Power Loader waved the question away with a hand. "It wasn't supposed to get out, but, well, leave it up to some nosy students…"

Izuku saw their teacher flick him a look, making him gulp. I think he's still mad about us sneaking away and spying on All Might...

"Anyhow," Power Loader continued, "This is a great opportunity to learn. If you recall, Midoriya and Ken had a challenge before, about base building? You got to see a bit of what you can accomplish, though, hopefully much better than what they had made."

Ken scoffed softly from the back of the classroom, laying his head on his arms on his desk and looking ahead with a bored expression.

"Mine was pretty good," the boy grumbled as he flipped the pen he had created along his hand.

"We'll start by going over what everyone excels at, and then from there we can start working on creating a smooth assembly process," Yuki explained further.

Despite Yuki's serious nature, everyone was excited by the prospect of having such an important task. Izuku turned to Mei for some insight from her, only to find the pink-haired girl scribbling away in a journal furiously, nearly creating smoke from the strokes of her pencil.

"U-Um..?"

The girl's pencil came to a screeching halt, and she turned to Izuku with a smile.

"I've already got a solution— Tadah!"

Mei lifted the journal, putting it right in his face. He backed up a bit, looking at what she had drawn— From the looks of it, it was some kind of… Laser weapon, that could identify targets and—

"Hatsume, I feel like that's going overboard," Izuku commented.

"Ehh? But it's effective right? Imagine this baby that can access criminal databases and use facial recognition to identify a threat and BLAM—" She closed the journal hard for emphasis , then chuckled. "I don't mean it'll kill them or something but… Maybe scare them?"

"That's… better than what I thought I guess," Izuku said with a nervous smile.

As the class began to bustle with conversation, everything changed in an instant.

A loud alarm began to blare, a familiar scene from what had happened during the press fiasco. Everyone was a lot more calm this time, looking around in confusion.

"What, the stupid journalists are back?" Shiro scoffed and sat back in her chair as if uncaring.

The door to the room opened quickly. They all looked to see the teacher from the nearby 1-F class of support students there.

"Power Loader, this is a level four alert," the tall man spoke.

Izuku was surprised to see their teacher's calm demeanor slip for a moment, as his mouth and eyes opened wider, before he nodded to the man and turned to the class.

"We're on lockdown. Everyone is to stay put," Power Loader told the class seriously.

"Sensei—"

"What's going on?"

Many gripes arose from the students, until Power Loader suddenly grabbed his helmet and pulled it off, giving them all a good view of his deathly serious expression beneath his messy ginger hair, quieting them down.

"I said everybody stays put. If you leave, you're expelled, got it? Yuki, I trust you can keep the peace."

The teacher didn't wait for them to respond, putting his helmet back on and rushing out of the room.

The whole building began to tremble, as the sound of metal on metal could be heard all around. The door to the classroom was shut behind a metal sheet with a small, thick window near the top.

It was at this point that panic began to set in.

"What the hell! We're gonna die!" The first outburst game from Soga Ninsei, his usually cocky rich-kid attitude vanishing as he shot up in a panic.

Shuzo, the boy with the prickly beard who was often seen as being laid back, also stood quickly, shouting, "Sensei just left us here! Why couldn't we come help?— Wait, what are you doing, Taka? Are you thinking of a way to help us?"

To his right, the bespectacled boy at the front center desk was sitting in contemplation, his eyes darting from left to right as he twiddled his fingers. Finally, he stopped and nodded, as if content.

"I was running through my entire life for a moment, now I can die in peace," Taka said confidently.

"Wow, that's such a useful Quirk— Wait what the hell?! You're no help!"

Izuku stood and tried to raise his voice the best he could. "G-Guys, we should really—"

From nearby, a burst of smoke made Izuku jump in surprise. It was Taro, the redhead girl's hair erupting into flames as she began to furiously write something down onto pieces of paper at a blurring speed.

"Taro! What are you doing?" Izuku didn't want to get closer to see what she was doing.

"Writing my will!"

Amongst the chaos, Mei sat in thought, not giving much care to her classmates, while Shiro decided to join in on the panick. Only a couple of the students like Ken at the back and the tall, thin Sunada Kichi at the front were staying relaxed, the latter snickering at the commotion.

Yuki was getting ticked off at it all, knowing his voice wouldn't be enough. He produced five pens from the teacher's lectern, and tossed them with expert precision out at specific targets.

Click click click click click! They all struck their marks, hitting Shiro, Ninsei, Shuzo, Taro, and Izuku right in the forehead, leaving a tiny mark from the force of the pens. Ninsei looked pissed to have been struck by Yuki again, while Taro's hair was sizzling as it returned to normal, the others rubbing their heads and wincing at the dull pain.

"Everyone, shut up!"

As the targets all reeled from the sudden attack, the entire class looked towards the front, where Yuki had his arms crossed, looking peeved.

Izuku groaned, rubbing his temple as he questioned aloud, "Wait why me? What did I do?"

"Something is wrong, obviously, but we are U.A students— We should stay strong," Yuki told them sternly.

"Shouldn't we be trying to help? That's what I want to do," Shozu commented, nervously stroking his patchy goatee. "I'm not about sitting around twiddling our di—"

"We're not a part of the Hero class, are we?" Yuki shot the boy a serious look, making him back down. "Were not allowed to act as we please. If anyone tries to leave, you will get every item in this classroom thrown at you."

Taking a deep breath, Yuki turned to the board and took a piece of chalk.

"Now, we should try and begin the lesson to show Power Loader that we can be trusted—"

Sizzle… Crack! The lights above burst suddenly, leaving the room and the hallway outside in darkness, the loud noise startling everyone.

The door to the classroom busted open, and the following actions only happened in a matter of seconds.

The sounds of multiple pairs of footsteps flooded the room, but amongst the panick and the darkness, they mostly went unnoticed at first.

One second had passed.

Yuki turned, his eyes barely adjusting to the darkness, though he could already make out small movements. He hurled the chalk with intense force towards a figure that was moving towards the front center desk, where Taka sat. It hit them hard, sending a poof of chalk dust that marked them in the shadows.

Izuku, who was towards the middle of the class, hadn't caught on until someone suddenly grabbed hold of him, then another person, and another. It felt as though several arms were ensnaring him, one hand covering his mouth to stop him from making a noise.

Two seconds had passed.

Yuki made a move, springing forward into action, his eyes locked onto the figure he had marked, ready to attack them. However, he suddenly felt as multiple different people grabbed onto him from behind, surprising him as he hadn't seen them in the darkness.

Izuku was struggling, but couldn't shake whoever had grabbed him. What's going on! Someone—

Three seconds had passed.

Izuku's muffled voice was enough to alert some around him. Urushima Taro, who sat in front of Mei, was frightened by the sudden darkness and confusion, her legs shaking with fear and anticipation as her hair erupted into flames again, illuminating part of the classroom.

Mei was taken down as soon their attackers became visible, being grabbed by several figures wearing black clothing and hoods. Izuku could only watch as he was dragged away towards the front, seeing Mei being grabbed by the same assailants as himself.

Yuki could feel his large, broad build was enough to escape his smaller captors, but the sheer number of people he felt grabbing onto him made it nearly impossible to squirm.

Four seconds had passed.

Some of the students shot up to help, seeing the surprising commotion. However, one of the masked figures suddenly jumped at Taro and grabbed a hold of her, smothering the flames to put them back into darkness.

It was too late. Knowing they were under attack, the students began to fight back.

Five seconds had passed.

Hirari Wakata, as the fitness nut of the class, was quick to sprint in from the back of the class and grab hold of the attacker who was grabbing Taro, pulling them off. Taro was crying from the surprise, quickly moving to hide under her desk, her hair no longer alight again.

"Who do you think you are! Coming in here!" Wakata growled and reared back a fist to punch the person on the ground.

Suddenly, the person began to glow a bright blue glow, which only seemed to grow brighter and more intense—

Six seconds had passed, but the deed had already been done.

They exploded into a blinding blue light, sending crackles of electricity all around the class, making everyone take cover. When it had finished, they were left in the dark once more, until several lights flicked on from the back.

Ken had produced several flashlights along his hands and arms with his quirk, protruding from his skin as he pointed them all around to nearly illuminate the room.

"My bad, it took a second to make all these," Ken spoke, sweating a bit from the exertion.

"Well, that was crazy," Wakata said, picking up the black cloak from the ground where the person had seemingly self destructed. "Is everyone okay?"

Ken moved the flashlights around, everyone seemingly very startled but alright for the most part, except for—

"Looks like we're missing the class prez, Midoriya, and Hatsume," Ken said solemnly.

Everyone looked around in disbelief, confirming that they were missing.

"Great! They'll be expelled," Shuzo exclaimed.

"Isn't that the least of the worries? Like, death," Ken pointed out nonchalantly.

Taro made a noise of fear, and Wakata shot a glare over at Ken, who shrugged it off, not interested in hurt feelings.

"I think I got it," came Taka from the front. The short pudgy boy pushed up on his glasses and sighed, pointing to the front door. "I went over what had happened with my Quirk, and it seems like almost thirty people ran in and snatched those three up," he explained.

"I knew it was super useful," Shuzo said with a grin. "Wait, are you… crying?"

Taka sniffled, wiping his tears away from under his glasses as he nodded softly.

"I saw it… Yuki… They were going to grab me too but he made them hesitate and saved me!" The boy began to cry, and everyone looked down as a melancholic feel washed over them all….

The sound of two doors being busted open echoed through the gymnasium, as several figures rushed inside, holding the struggling Izuku, Mei, and Yuki. Once inside, a few of them shut the doors and moved objects in front of it, before the others tossed the three students to the ground, releasing them.

"W-Who are you guys?" Izuku got up quickly, ready to fight if he had too— However, a faint red glow from the nearby bleachers made him look that way, his eyes widening in surprise.

There sat Miss Negative, the hero whom had helped them with their entrance exam and could create copies of herself made of light.

If its her then that means… Izuku thought about how there was the bright blue explosion, and turned to the cloaked figures behind them. Sure enough, he could make out the gentle features of a Miss Positive clone, who had a small smile on her face that matched the identical faces of the others.

"I'm glad you came… Well, I guess one got left behind," Miss Negative said with a sigh, as a ripple of red light moved over her body.

"Miss Negative…? But—" Izuku was cut off as Yuki took a step towards her.

"We'll be returning to class, so don't think of trying anything again," Yuki told her confidently.

Miss Negative chuckled and stood weakly, looking down to him. "But you've only just arrived, won't you hear me out at least?"

Is this what the alarms were about? Is it because of her…?

Izuku peered over at Mei, who seemed to have a blank expression on her face as she stared at the woman. He could tell, from watching her for many months, that she was probably using her Quirk, Zoom, to analyze her.

He then looked to Yuki, who narrowed his eyes at the Hero ahead of them. "No," he stated firmly.

The woman sighed. "I had hoped to get your insight as well, but I knew you'd be a feisty one. Perhaps this will do better?"

She motioned with a hand, and several of the Miss Positives rushed in towards them.

I don't have my Flow! I can't—

While Izuku hesitated, Yuki sprung into action quickly, knowing he had the strength necessary to take on the clones. The first one to reach him was given a swift punch directly to the throat, sending them toppling to the ground, the force enough to do them in despite breathing not being an issue for the creations.

Two more clones approached. Yuki dodged their agile kicks, his Quirk-️ enhanced eyes flicking around to analyze each movement in order to accurately dodge, then retaliate. He grabbed one of the clones legs in mid-air, turning and tossing her away, before turning and taking a kick to the head, which he quickly shrugged off.

Izuku watched the quick exchange in awe. That's right, the clones are fairly light and not that strong alone! So…

Steeling his nerves, Izuku reached out towards where Mei had been, only to find her gone. Confused, he looked around and saw that she had her goggles over her eyes, and was slowly approaching Miss Negative.

"Hatsume! What—" Izuku was cut off as a clone grabbed hold of him and kneed him in the stomach. Confirming the hunch that they weren't that strong, and thanking the physical training he did before attending U.A, Izuku recovered easily and jumped up, delivering a hard uppercut to the clone, sending her stumbling backwards before her whole body dissolved into a blue light. "Alright, this shouldn't be too bad…" He flexed his fingers, readying them.

Miss Negative watched the two boys fighting, then looked to the approaching Mei. The woman raised her hands defensively, but a red shimmer overtook her body for a moment, causing her to fall back on the bleachers, groaning.

"Something's wrong, right? Is your Quirk backfiring or something," Mei asked, adjusting her goggles as she analyzed the woman.

"I knew you were an astute one… Hatsume Mei…"

The Miss Positives all looked towards the original with concern. This gave Yuki and Izuku a good chance to take some of them down, as they delivered punches and threw them away with ease.

"I'm fading… I don't have long," Miss Negative explained with an increasingly raspy voice. "I could only hope to bring someone here to help… I couldn't trust a pro Hero… or anyone else…"

Hearing this, Izuku paused. He looked to Yuki who shoulder tackled one of the clones and gave them a punch to the gut, making them dissolve into light particles.

"Yuki, wait a sec—"

Miss Negative looked up at Mei, a sadness overtaking her usual sly expression.

"I'm disappearing… I can't… Control myself anymore…"

"A Quirk meltdown? I've heard of it happening," Mei commented, lifting her goggles and placing a hand to her chin in thought. "There's been people completely taken over or killed by their Quirks before! Why didn't you get help sooner?"

Miss Negative waved the question away with a hand, responding, "I couldn't trust anyone with this, but I've waited too long I suppose…"

Mei nodded slowly. "I get it, so maybe you saw potential in us to help? Because you watched us during the entrance exams?"

A small smile appeared on Miss Negative's face at this. "You're correct, I—"

The ripple of red light overtook her once more, and the clones began to shimmer and squirm as if in pain. Yuki looked back at Izuku, but decided it was a time for action and turned on his heel, rushing towards where Mei and Miss Negative were.

Something's not right about all of this… Is this even related to the lockdown at all?... No, the teachers left, they wouldn't have if the threat was inside the school! Izuku thought.

Miss Negative let out a yell of pain. The glow emitting from her and the clones began to grow, and Izuku's eyes widened. He was between Mei and Yuki, both potentially staring in the face of danger, the jumble of confusing thoughts making his legs stay put, unable to move.

What do I—

A red light suddenly erupted out and bathed the over entire gymnasium, blinding them for a few moments. Something about the light seemed oddly warming as Izuku's eyes darted around, unable to see a thing.

But within the blinding light, Izuku could've sworn he heard the sound of someone crying.

To Be Continued…

Next Chapter: Polarity Pt. I