(A/N) Aight look, y'all got me fucked up bruh. 650+ follows and damn near 70 reviews for the intro chapter? All I'm supposed to move on and work on the next schtick? Nah.

Sorry, CMR.

Anyway, I'll try to lower any expectations before they get too high lol. If you're expecting Nasuverse lore purity in this story, then I'm sorry in advance. I've absolutely butchered Nasu magecraft here. Not only do I give you all a "Quirk Shirou" instead of a "Reality Marble Shirou", but I also give you throwaway lines that won't do dick all other than confuse you further until I update again!

If I haven't lost you yet, then welcome, friends.

I'm going to have a lot of fun writing Shirou into a world that's practically his wet dream. He's going to have some differences in character, but that would be expected considering that the same traits that Rin calls "distorted" are what would make him an idol in BNHA.

Oh yeah. In case it wasn't obvious, Shirou isn't an experienced teacher. Expect mistakes.

ONE LAST ANNOUNCEMENT.

If you're interested in seeing the full Rumi sketch (and more content of a similar variety, including fanart beyond black and white sketches) then feel free to check out my Twitter (which I have just recently made). I'll be posting a lot (relatively) in the coming days. While you're at it, check out my webtoon too, lmao. Feedback would be appreciated. (Info on both in my bio)

Now that I'm done my shameless self-promotion, please enjoy!

X

The silence didn't last long. The students quickly started to chatter amongst themselves, so caught up they were in their excitement.

"No way! He's gonna be our teacher?"

"This is crazy!"

"I heard a rumour, but I didn't think it'd be true…"

Shirou's mouth flapped about uselessly. It was his job to keep these kids under control, but how? He could yell, but that wouldn't do. A proper student-teacher relationship was built on respect, wasn't it? If he raised his voice, would they get the wrong impression of him?

As a stall tactic while he thought of a solution, he went over the course notes that Aizawa had left for him.

The first item on the list was labeled "Entrance Ceremony", printed clearly in black ink along with the rest of the items written by the principal. It took him a moment to figure that out though, because it was crossed out with a red pen, the words "Waste of time, skip it," written in the margins.

That made him frown.

Aizawa might not think that such things were necessary, but Shirou disagreed. Principal Nezu was a smart man, and he would surely have important words of advice to impart to these children at the beginning of their careers.

He felt bad for going against his senpai's instructions, but…

"Everyone, please follow me."

He spoke without thinking, but miraculously it did the trick. All the other voices quieted before he even finished his sentence.

Was it an ingrained respect for teachers? For heroes? Maybe it was because of who he was in particular?

Regardless of the reason, he was thankful for it. Addressing the filled classroom once more, he announced, "The entrance ceremony will begin soon, but, uh…" he trailed off. If only he had tried to break the ice a little better. "We can discuss our plans for today when we get back."

Thankfully, the way there was uneventful. Even some of the students whom he could tell were of the louder sort were acting well-behaved.

Once they reached the doors to the gathering hall, he felt a tap on the shoulder.

"Kayama-senpai?"

The students noticed her too. Some of them, notably the green-haired boy, were trying their hardest not to fall back on their earlier excitement.

The pro hero Midnight, another teacher at UA, tilted her head towards the stage that had been set up for the ceremony.

"I'll take your kids for the moment. The principal wants to introduce you to the student body, so go meet him out back."

X

Midoriya Izuku was excited.

That wouldn't come as a surprise to most. In fact, he was positive that every one of his classmates, some of the lucky few selected to attend the UA Academy, felt exactly the same way.

Of course, his particular upbringing and the life he had lived up until that point might've had something to do with it too, but he was currently excited for a different reason entirely.

Archer was his homeroom teacher, of all people!

There wasn't a single soul in all of Japan that hadn't heard that name– maybe even the world. When one spoke of all-time greats, the man was right up there with the likes of All Might.

"Hey, are you all right? You've been mumbling to yourself a lot…"

Izuku almost choked on his own spit. He spun his neck to look at the girl sitting next to him so quickly that he could've sworn he heard a crack.

"Oh! Uhm… n-no, I'm fine. It's just…"

"–That Archer is our teacher? I know, it's pretty hard to believe! Where did he go, by the way? He left when Midnight-sensei came…"

Izuku blushed. He really was speaking out loud, then.

"…"

The thought of Midnight made his blush darken. What course did someone like that teach?

The boy took a quick look around to see if he recognized any other pros amongst the teachers gathered for the ceremony.

He did. He recognized a lot of them.

There really were pro heroes left and right, here.

"Hello, first-year students of the support, hero, and general studies programs… or as I see it, our heroes of tomorrow."

The announcement came from the loudspeakers on either side of the stage, though the original voice could be traced back to whoever was speaking through the microphone on the podium.

…It was a… bear? A mouse? Was it supposed to be the school mascot or something?

"I'm Nezu, principal of UA Academy. Through the following years, it will be my first priority to ensure you all reach new heights, both as professionals and as individuals."

Eh? This was the principal?

"You are all incredibly lucky to be here today. That said…" he paused. "It is not for the reason you believe. Never let anyone demean the hard work you've put in to reach this stage by chalking it up to something as wishy-washy as 'luck'."

Many chests in the crowd were puffed out as they swelled with well-deserved pride. The hero course might be the flagship program of UA, but that didn't mean that the other streams weren't just as highly venerated.

"Your luck stems from the incredible opportunity you've all been given to learn under some of the greatest professional heroes from across the nation, two of which have taken time from their incredibly busy schedules to teach here for the first time! Without digressing further, allow me to introduce them– not that they'll need any introductions."

The lights in the auditorium dimmed as a spotlight was pointed at the curtains opening behind the principal.

When the two individuals were revealed, the crowd of students transcended mere "excited chatter". There were screams, shouts, and roars. Students clapped, stood some even needed to be held steady by their peers.

Izuku felt like he would've been in the same boat, were he anyone else. He knew both of them would be here, after all.

…On second thought…

"Ah!"

Uraraka-san caught him before his legs gave out.

"Greetings, young students!" belted the number one hero, his voice even louder than usual thanks to the equipment. "I will be teaching the first-year Foundational Hero Studies class! Though I still hold many duties outside of being an instructor, I promise you all here and now to do my utmost while I am here, despite my inexperience."

He coughed lightly into his fist. Most would think that he was simply clearing his throat, but Izuku knew better.

"That said, do not hesitate to approach me in the halls, even if you're not in my class. I might be here to support the hero program, but I'll do my best to make myself available to any student, regardless of faculty, whenever I am capable."

As he stepped away, the sound of clapping hands and cheers could be heard once more from both the student body and present school faculty. His speech wasn't outlandish in any way, but it was still well-received. It solidified the image that All Might always knew the right thing to say.

The second man, someone nearly if not just as recognized by the Japanese people as the prior speaker, stepped forward and stopped behind the podium.

Silence reigned once more. The audience wanted to hear what this one would say, but for a completely different reason.

Archer was a well-known hero, but he was by no means known for his public speaking. His high popularity ratings stemmed from his actions and ideologies; he rarely stepped foot near any kind of press conference, unlike All Might, who was more than happy to engage the media.

It wasn't unheard of for Archer to participate in interviews, but that was only when the man felt he needed to speak up on a topic that directly concerned the public order. Even then, however, his words were concise at best.

"Ah… Hello," he started in a surprisingly awkward fashion. Wasn't he a little like this back in the classroom, too? "I'm sure many of you know me by the name 'Archer'. For some of you, I'll be your Hero Ideologies teacher."

Nothing was said for a moment longer, and many probably thought that was all he was going to say.

"If you need anything, no matter how small the issue, please come to me. I will help."

He stepped away.

It took a moment for everyone to get over how abrupt his introduction was compared to his colleague, but more claps and cheers arrived on short order.

Izuku was too busy staring to clap.

Both All Might and Archer were amazing in their own way, and the words they spoke were a great example of that.

All Might was larger than life– quite literally, in some respect. He was humble and approachable, but still managed to seem so perfect in everything he did.

Archer's character was much more muted, but his greatness could be found in the last three words of his speech.

"I will help."

He didn't say, "I'll see what I can do," or even "I'll do my best". With Archer, everything was done with conviction and commitment. He never went out of his way to be flashy, but he always gave it his all when it came to being a hero.

Izuku's eyes shone.

"So cool," he whispered.

It would be really nice if he could ever be even a fraction of the heroes they were.

X

"How did I do?" asked Shirou honestly as they stepped off stage. The rest of the ceremony went well, and the students paid rapt attention.

Were kids supposed to be this well-behaved? They most assuredly were not back when he was a student here.

Come to think of it, didn't Rumi get kicked out of the entrance ceremony for talking too loudly?

"Great! Both of you were great!" Affirmed the highly intelligent animal.

"EuGHK!…"

Both Shirou and Nezu quickly looked to All Might, seeing him hunched over himself with a hand covering his mouth.

"Are you alright?" asked the principal.

"Of course!" The taller man was quick to flash his signature smile with a thumbs-up. "I must have eaten something bad for breakfast. I need to head to the bathroom, if you'll excuse me."

The redhead watched silently as All Might strutted way from them, noticing the blood on the man's palm despite his best efforts to keep his hand to his side.

…Was he alright?

He almost had to shake his head to get rid of the thought. Of course, he was alright. He was All Might after all.

But still… he couldn't help but worry.

If his father was the reason he wanted to be a hero in the first place, then All Might was the model he used to craft his own image of heroism. The man was the archetypical hero.

As was the case for many others, All Might was his idol.

For now, it was nothing more than a suspicion– a fruitless one, hopefully. He didn't have any more reason to look into it.

That said, if he ever found out that something really was wrong…

He would find a way to save All Might, too.

X

He caught his class as they were filing back into the A-1 classroom. Midnight, who was standing at the door, walked up and slapped him on the back.

"Just in time," she told him. "Nice speech. A little on the short side, though."

"Was it?" Shirou asked as he scratched the back of his head.

"Never mind that," she chuckled with a shake of the head. "You've got a class to teach, don't you?"

Embarrassed for having almost forgotten, a slight tinge of pink dusted his cheeks. "Oh, uh… yeah."

She ruffled his hair and left him to his own devices.

By the time he got behind his desk, everyone was already sitting down.

…Where to start, then?

He brought out the day's schedule once more, finding more of Aizawa's penmanship. There was an arrow indicating that the order of the second and third item should be switched.

Were he to stick with the vanilla curriculum, they would start with introductions and select a class president, then they would finish the day with the UA's staple introductory physical aptitude examination.

With Aizawa's version, on the other hand…

Next to the "class president and introductions" segment, he wrote "Push this off until the principal makes you do it," and next to the aptitude test he wrote "Just expel whoever gets last place. Get them motivated."

Needless to say, Aizawa's instructions would be discarded once more.

But still… while cutthroat, the threat to expel the worst performer sounded like a decent way to motivate students to give it their all. Could he just threaten to do it, maybe?

…He would have to think of something.

"Alright, everyone." He rested his hands on top of the desk. "First thing's first: how about everyone introduces themselves? Easy stuff: your name, what school you're from, hobbies, quirk, whatever you want, really."

He would do his best to commit it all to memory. Forgetting the names of those he'll be teaching would be impolite.

Thankfully, there were willing icebreakers in the room. A pink girl practically jumped to her feet, waving her arm over her head excitedly. "Oh! I'll start!"

He nodded. "Go ahead."

"My name is Ashido Mina! My quirk is…

X

All in all, the introductions went fairly well. Some were more willing to share than others, obviously, and there were some a few hiccups from some of the more… expressive students, but no one started crying and no one got hurt.

It was very unfortunate that such circumstances were part of his experiences with introductions, but it is what it is.

Next came the easy part.

"We'll need a class president, while we're at it."

"Eh, sensei…" mumbled the invisible girl– Hagakure Toru if he remembered correctly. "We don't really know each other that well yet, so how can we choose a class president?"

"Ah. That's fair," admitted the still-green teacher. "How about this, then: who wants to be the class president?"

This way, they could at least narrow the list.

Twenty hands shot up, and Shirou's eyes widened.

Maybe this would be a little more difficult than he thought.

How about this, then?

"Who thinks they would be best at the job?"

Not a single hand went down. Actually, were they trying to lift them higher?

Well, this was UA, he supposed. These were just the type of people this school attracted.

Ah. That gave him an idea, actually.

"Let's make a game out of it, then," he announced.

A few heads cocked to the side. He had caught their interest, then.

"Our last activity for the day is a physical quirk performance evaluation. Whoever gets the highest marks will be the class president."

For the first time since earlier that morning, the students started to talk over one another. It was a little difficult to understand what they were saying.

"Ehhhhh?"

"Doesn't that just mean that whoever has the strongest quirk will be president, then?"

"How's that fair?"

"Shouldn't we try to pick someone smart, or something?"

"No," Shirou spoke firmly, cutting through the noise. "This will be a good first lesson for all of you. Consider it a 'sneak peek' of Hero Ideologies, if you want."

If Aizawa could mess around with the curriculum, then so could he. At the very least, this way these kids would learn something that he hadn't realized –that he couldn't accept– until much later in his career.

"You're going to be heroes. Your main job is to respond to emergency situations. Very rarely will you be the 'best suited' for whatever it is that you're dealing with. The best that you can hope for is to be well-rounded enough to work it out, but even then…"

He got a good look at those he was preaching to. He hadn't lost any eyes, so continued. "It doesn't always go that way. You're all working towards a profession where your success is directly related to how strong you are, and that's the hard truth.

"If you're strong, you better be prepared to lead, because other heroes look to the heroes at the top of the totem pole for guidance when things go south."

Archer wasn't strong because he wanted to be the "best" or anything of the sort. Archer was strong because he needed to be, and even then, he wasn't always strong enough.

The classroom was silent, though the look in some of the kids' eyes changed. Some looked like they lost interest, while others seemed to have a fire lit under their rears. Hopefully, they'd give his words some thought, if nothing else.

He smiled. "Let's go then, shall we? Grab your gym uniforms, and meet me at the front of the school."

X

Shirou's smile didn't budge as his class assembled in front of him. He gazed fondly at the softball he clenched in his hands.

Like his own teacher did once upon a time, he pointed out one of the more physically fit members of the class.

Eventually, he settled on the angry-looking one.

"Bakugou."

The spiky-haired boy perked at his name being called, paying attention in time to catch the ball thrown into his hands.

"How far do you think you could throw this?"

"I could throw sixty-seven meters back in middle school," he answered.

"Now, let's suppose you're allowed to use your quirk… how much would that number change?"

At the question, the boy's only reply was a toothy grin.

"In case you haven't figured it out yet, you're all at hero school now," Shirou announced jokingly. "Quirks are a big part of that. We're going to be running through basic physical aptitude drills, but I want all of you to use your quirks in any way you think will help you get a better score."

Bakugo went ahead and stepped into the white circle drawn out on the ground. He cocked back his arm, and…

Shirou only noticed it for a split second. The manic look in the kid's eye overshadowed an underlying conviction.

"Die!"

An explosion went off as the ball was thrown, and it flew.

…And flew… and flew…

"Seven hundred and thirty-one point three meters," announced the teacher. "Not bad."

X

Up until Midoriya went up for the ball pitch, the day had been going pretty smoothly.

Well, relatively, at least. Not at all for the green-haired boy, though, since he had been placing dead last in all of the tests despite having a strength-enhancement quirk.

Was he just not using it or something?

Regardless, it seemed as though the boy had enough. Same as with Bakugo, he could almost sense his determination.

Something was different from the other events.

Arcs of green lightning licked the boy's arms like pure power given form. It was almost like–

BOOM!

Shirou stared dumbly at the machine in his grasp. The numbers just kept going up.

The numbers slowed down just before the wind settled from the throw's shockwave.

"…Eight kilometers," he muttered, just as surprised as his vocal students behind him.

"Ah! It's like the entrance exam!"

"DAMNIT YOU FUCKING LIAR, I'LL KILL YOU DEKU!"

"It's a little too much wind, non?"

"Ribbit."

"Strong…"

His surprise ended the moment he saw the condition the kid was in.

"Midoriya!"

The arm was definitely broken. Was this why he was holding back during the other events? Damn! Recovery Girl made a note on his file that said his quirk could be self-destructive, but for it to be this bad…

"I–I'm fine!" whimpered Midoriya in what the boy would probably like to think was a shout.

Shirou didn't bother to call him out on his tough-guy act. His instincts took over immediately.

"Avalon," he spoke.

A glowing structure –a sheath– manifested between them. He pushed it into his student's arms.

"Hold it close."

Despite his pain, Midoriya gasped in excitement. "Th-this is Avalon! It's part of the weapon you created from the quirk of the UK's number three hero, Arthur!"

Shirou sweatdropped. "You know that off the top of your head, do you?"

That was kind of unsettling.

"Of course! You've only used it once before, though: in the fight with Black Knight! It took the online forums a month to figure out who's quirk that was!"

He said a month like it was supposed to be a really long time. He assisted in the arrest of the villain Black Knight back when he was on a trip to England, which was about six years ago. That really was the only other time he had used Avalon and Excalibur, come to think of it.

The uptight boy –Iida– gasped. "Incredible! It's really healing!"

It was. One could barely tell that Midoriya's arm was broken in the first place.

"It's Arthur's quirk, Fae," their teacher explained. They already knew who's quirk he had "traced" to make the weapon and sheath, so there wouldn't be much more harm in explaining this much. "It's basically high-speed regeneration."

Many "o" shaped mouths were his response.

"Anyway, just hold on to that, Midoriya– and don't think we won't be having a word later," he added with a frown. Really, kids should take better care of themselves, heroes-to-be or not.

"Y–yes sensei!"

At least he was cooperative.

The redheaded man glanced down at his clipboard.

"Now for the assessment rankings."

All twenty heads perked.

"In first place, and your new class president, Yaoyorozu. Congratulations."

Her classmates clapped politely, and she preened.

"In second place, and your new vice-president, Bakugo. Congratulations."

Chaos closely followed the announcement.