Why are they all kids?

Groaning, Izuku grabbed for the snooze button on his All Might alarm clock.

He shot up though, when he remembered which high school he was going to. Even after a few months, he still could not get used to this feeling. He was going to the most famous school in the world, more famous than the university 'Harvard' used to be, though it was now steeped in the fog of forgotten memory.

After his normal morning routine, he was ready. He kissed his mother on the cheek and set off.

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He couldn't help it. Izuku knew he was getting later and later as each second passed, but he had to watch; Kamui Woods had some new moves that were very effective.

Before he realised it, the notebook was out and he scribbling away like a desperate printer. The crowd was cheering Woods on, yelling his name, and Izuku couldn't help but get caught up and joined in quietly. All while writing his notes, of course.

When the villain had been apprehended and he had cheered with the crowd, Izuku went back on his way, Full Cowling and hoped that nothing else would hold him up in the busy villain-ridden city. Lucky for him, nothing did.

All in all, it took Izuku fifteen more minutes to get to school than normal, which was not too shabby. However, being late is never good for a hero, even if it meant you could make a cool heroic entrance in the nick of time. All Might said so. He must continue to train – his inner fanboy was still running rampant. And so, Izuku had no proper excuse, meaning there was nothing to exclude him from Aizawa's righteous wrath and public humility.

Izuku flew through the gates and the emptied halls, fervently hoping with a sense of dread that something would save him. At a later time, Izuku would idly wonder if hope had miraculous qualities.

With a minute quiver of anticipation, Izuku burst into the room as quietly as possible and stood there, awaiting his inevitable fate. However, the slight chaos greeted him was definitely not what he had been expecting.

It took him a full ten seconds to properly process the scene.

Katsuki was running around, mini explosions on his equally small hands blasting at anything that dared to obstruct him. He was screaming unintelligible words and his voice was a bit too squeaky for a fifteen year old.

Eijirou was also running and yelling, ahead of Katsuki and also creating as much mess. His legs were moving comically fast in comparison to their size.

Ochako was there too, giggling as she made various things float with her pudgy fingers. Some of their other classmates were openly pointing and staring at the gravity-defying objects with their small mouths open wide.

Shouto was sitting in the corner by himself, staring at nothing in particular.

Fumikage was also sitting down, but was whispering conspiratorially to Dark Shadow, who nodded enthusiastically.

Iida was valiantly trying to set everything in the room right, though it was hard work for his tiny muscles. He was also yelling squeakily.

Oh, they were his classmates alright.

"Izuku, you're late." A relievingly deep and familiar voice stated.

Izuku turned to face his homeroom teacher.

"Why?" Mr. Aizawa asked.

"Er, um, uh, I got held up by, um, a villain?"

"Is that an answer or a question?"

"Questio-um, answer, sir."

Aizawa sighed and picked up something from his desk.

"Well, anyway, I've got a headache and I need to deliver these papers." Mr. Aizawa nonchalantly stated. "Make sure they're behaved." He said and vaguely waved his hand at the rest of the room.

Slouching, as always, Mr. Aizawa made his way to the door.

Izuku panicked. He couldn't leave!

"Sir, wait!" He screeched.

'What?" His teacher asked, not bothering to turn around or even stop moving.

"Wh-what happened? To the class, I mean. They're all-"

"I know. Some things happened and they got hit by a quirk." Mr. Aizawa had now reached the massive door. "The staff is very busy, so I'll take my leave now."

And with that, Izuku's lifeline walked off. He was left stranded in a sea of six year-olds.

Oh, damn.

"Hey, Deku! Help me catch this little-" At least Izuku knew that six year-old Katsuki's idea of a bad word was 'idiot'. "-sh*t!"

The whole class gasped at the same time, and a foreboding hush fell about the previously deafening room. Ochako's floating objects dropped. Every head was pointed at Katsuki, and then, a split-second later, at Izuku.

Oh, yeah, he was the only sane one existing right now. Of course they were looking at him, the 'adult'. Izuku turned on Katsuki, feeling the crowd behind him.

"What?" Katsuki asked, knowing full well why they were so quiet.

Izuku felt the regular spike of fear from his lifelong bully.

"Um, uh, Ka-" Izuku started.

"You stop that right now!" Tenya came marching up. "Do you have any idea of the consequences of your actions?" Being six years old, Iida trying to say 'consequences' would have been funny if it wasn't for the situation Izuku found himself in. "First you say- say…" Iida paused. "And now you're bullying innocents! Apologise! Immediately!"

Some students nodded while Momo went and stood by Iida.

"What if I say no?"

Everyone looked horrified. They all looked at Izuku again. The pressure was on, again.

"K-Kacchan?"

"What?" Katsuki asked again, slowly turning his head to face Izuku again. The intensity of his expression would have made Minoru pee his pants.

"Uh, n-no, it's n-nothi-" Izuku stopped himself. Kacchan was six right now. Izuku needed to get a hold of himself. He calmed himself and began again.

"Swearing is bad, and you're all six." Izuku's mind was racing as he tried to make Katsuki listen. "Really, I expected better. Who knew that such a sweet boy would turn so disastrous? Look at Tenya, he doesn't swear at all, not even when he's angry."

"Well… well…" Katsuki struggled to answer. However, he knew he wasn't going to let some prat like Tenya show him up, at anything. No more swearing, then.

Meanwhile, Izuku was feeling triumphant. He could face up to Katsuki – it was possible! This new revelation sent his mind reeling. Maybe he didn't need Mr. Aizawa to handle his class after all.

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In the teacher's lounge, Mr. Aizawa sneezed into his cup of coffee. The cup shook and the hot drink spilled onto his trousers. He didn't believe in superstition, though, that was just dumb.