Relatively long A.N at end

The gigantic fist of Mount Lady slammed into the other giant she was against, knocking the titan to the ground and stealing Kamui's victory.

"Wow! Did you see that!" Voices cheered, excited to see the debut of the new heroine. People talked between themselves excitedly, many of the men staring at Mount Lady's… mountains. Izuku was doing none of that.

He felt a burning desire in his chest, like liquid fire crept into his lungs. It wasn't to the heroine in front of him, at least he didn't think it was. His blood burned hot, though. A scratch to do something that he couldn't figure out.

"—kid? You listening?" A voice said, snapping his attention away from… whatever he was feeling.

"Ah—um sorry! I wasn't…" Izuku said, nervously rubbing the back of neck.

The man shrugged. "It's good, kid. But I heard your mutterings, you practically knew what the hero's were going to do before they did it! You trying to be a hero or something?"

Izuku involuntarily snorted. "Of course I'm gonna be a hero, the best hero. There is no man of my pedigree in this world."

Why did he say that!? Why why why why why why why why! Why did his stupid mouth speak up! He was quirkless! He wasn't strong! Heck—he didn't even think he'd be the best!

The man looked startled. "You sound pretty arrogant, got a strong quirk, eh?"

He'd just have to fix this! He didn't know why he said that, but all he had to do was—"Only a fool would believe it is a quirk that gives strength." He scoffed. "The prowess of my mind and eyes will crush the aspirations of those who wish to challenge me.

WHY DID HE SAY THAY. Stupid, stupid mouth! He wanted to smack himself in the head over and over again! But, well… it did feel rather nice to speak with confidence… Maybe he should act like this more?

It wasn't even wrong to say it just takes a good mind to beat anyone, the majority of heroes would lose to a gun! Even the quirkless could beat most people, what could Endeavor do to block a bullet?

The man hummed. "You're sheer confidence has me believing you, kid! Guess I'll be looking up at you one day."

Izuku was going to give another ridiculously arrogant remark, but a quick glance at the time shut him up. "Shoot-I'm gonna be late for school. Thanks—ah—for your support!"

The sprint to class was done with much self reflection, but he did make it in time. He got to his desk, drenched in sweat, and out of breath. The rest of his classmates looked at him weird, but why would he care what his lessers—why was he thinking like this! Gah, what was up with him today!

The teacher walked into class only a minute after Izuku did, a pile of papers stacked in the man's hands. "Alright, class, today we are going to be talking about your future careers." He paused dramatically. "But who am I kidding! I know you all want to be heroes!"

The class cheered as their teacher tossed the stack of papers into the air, all of the kids showcasing their terrible quirks—hey! They weren't terrible, they could be useful… he probably shouldn't think like that, it was mean!

"And this year, one of your classmates is going to be trying out for UA!" The classes' heads swiveled towards their rabid classmate.

"Hell yeah!"

"Good shit, Bakugo!"

"Let's go, man!"

The class congratulated the blond, already expecting him to make it in. And who wouldn't? Kacchan was strong. Like, real strong. Weaker than him, obviously, but strong. Izuku could beat him, pretty easily at that. All it would take was a hot enough flame and the nitroglycerin-esq sweat Bakugo made would detonate him like a stick of dynamite. A taser could probably do the trick as well.

Bakugo had nothing on him.

"Ha, teach! Trying out? None of those extras are going to contest with me! I'm practically guaranteed already!"

The cheer died down a bit at Kacchan's shitty personality, but some people still cheered him on. The teacher coughed to get everyone's attention again. "I forgot to mention! Someone else is trying out for UA as well."

There was another dramatic pause, but this was more due to the teacher being a jerk rather than Sensei trying to hype everyone up. "Izuku is also going to take the test. Good luck, Izuku!"

He glared holes into his teacher as he was ratted out, his classmates looking like the crowd at a tennis match as their eyes bounced back and forth between Izuku and Mr. Mount Vesuvius himself. If it had been any other day, Izuku would have folded in on himself like a piece of origami. Unfortunately for Bakugo, it was not any other day.

"DEKU! The fuck do you think you're doing! Still think you can be a hero, you quirkless bastard!" And so Mount Vesuvius erupted and Magma stormed to him like an angry toddler—he was really being unfair to Kacchan, wasn't he?

Fists slammed on his desk as Kacchan leaned forward, glaring daggers into him. "Gonna speak up?! I am going to be the only one to come from this shitty school, you hear me! The only one! You're just a rock on the side of the road, a pebble on my path to number one!"

Izuku rolled his eyes. "Come to bark, you insolent dog. You come to yap like a mongrel in my face, lauding your ambitions like a trophy. But, Kacchan, you will never be number one. You will lick at the cusps of All Might's glory, questioning why you will never be like he is. And you will never realize, never understand the fact that you will never be a hero, that your filthy persona is such a disgrace to the aspirations and dreams of our forefathers, that the very postulation that you are heroic would make them roll in their graves in disgust. So, fume and rage, attack me. Prove me right, show me that you are a dog. Stop your barking and bite instead, you filthy beast, as it is the duty of a hero, after all, to cull wretches like you."

Katsuki looked like he swallowed something sour. Hell, he also felt like that! Why did he say that, Bakugo was going to kill him!

"You, you motherfu—" Bakugo was cut off by their teacher.

"Alright, alright you two. Izuku, Bakugo, please calm down. Also, return to your seat."

"…You're dead." Kacchan then turned and fumed, walking to his chair. The class watched in stunned silence, mouths gaping like fish.

Sensei clapped. "Alright, class! Open your books to page one-thirty-seven." That seemed to weak everyone up, mouths closing as people groaned,

The day carried on like usual, Izuku suffering in trepidation the whole time. Kacchan was going to beat the piss out of him, there was no doubt about it. Just—just why had he gone and said that? Why would he do something so stupid? His mouth just spoke and spoke and spoke and it felt good! It felt great, his chest had thumped like drums as liquid courage coursed through his veins like a raging fire. It was addicting and wonderful and so, so strong and—and it was going to get him killed!

He hung his head high, yet he mentally prepared his funeral. Perhaps his mom would lay daisies at his grave? Ugh! He should have learned flower symbology before. Maybe tulips instead, or roses. He didn't know any of their meanings, his mom probably would soon. He should probably go with mahogany for the coffin as well, dad lined that wood…

The seven trumpets of the rapture sounded as the bell ringed, signifying his end. And he was not chosen for paradise. The teacher left, yet the majority of his classmates did not budge. Bakugo stared into his side, and if looks could kill, Izuku would be a speck of dust at this point.

An eternity passed, time crawling so slow it must have been years. Actually, he was just being dramatic. It was probably only a good five to ten minutes or so, but still! His heart thundered like an ensemble of drums in his chest, just waiting to burst.

The symphony did not take long to play. Bakugo's steps thumped against the ground like a raging lion, ready to pounce at any moment. Izuku turned to look at him.

"Oh? What do you want, Kacchan?" Not this again! Stupid, stupid mouth! He wanted to cover his mouth but his hands wouldn't budge! "Come to attack me, to prove how much of a dog you are?"

Katsuki practically hissed. "I. Told. You. I will kill you, DEKU!"

Almost against his will, he waved his hand in a mock-placating motion. "Ah, so you have come to be the beast you are. Very well then, dog. Bite me."

He was going to die. His grave was going to say something like "here lies Izuku Midoriya, he was dumb enough to commit assisted suicide". He was so, so done for.

It also seems like Bakugo was down with talking, his fist slamming at Izuku like a missile. But it was slow, painfully so. He stared at the hand as it moved at snail speeds towards his face, crawling forward like it was in molasses. He looked up, meeting Bakugo's eyes and seeing, for some reason, a look of confusion slowly morph onto his face.

Izuku looked back to the fist, the roar of thundering music cheering him on as pure euphoria filtered into his veins and lungs. This, he realized, is what he was meant to do in life. Fight.

He turned his body away from the fist, his head being out of the fist striking range. The turn was like it had been done through syrup, each motion done as if he had weights chained to his body—as in, they were slow.

Bakugo did not expect him to move, his right hand overextended as Izuku yanked it forward, the opposing teen falling forward as Izuku shoved his other hand into the back of Katsuki's head, pinning the teen's face to the desk.

Izuku quickly got out of his chair, twisting Katsuki's arms into a painful lock as time seemed to resume. "Did I not tell you, Kacchan?"

Bakugo practically growled, struggling in the lock but unable to move for fear of breaking his arms.

"Villains fall to heroes, and you will never be a hero." Izuku let go of Katsuki, turning away from his old friend as he started to walk away. He was met with the looks of his flabbergasted classmates, shock all over their faces. Then, their eyes widened even more.

A sharp, deep seeded pain stabbed into his body, like a million needles were thrust into his lower abdomen. He involuntarily was left gasping for air, his vision woozy as his left kidney was left sore and aching. Waves of agony pulsated across his body like echoes of misery.

He turned around but was too slow to stop the explosion-powered fist from hitting his arm. He was left staring at Bakugo's hand in a daze of nausea as it slowly inched at him. And inch it did, pummeling him in his right arm, sending him sprawling.

He stared up at Bakugo, the nasty feeling of disgust weighing heavy in his gut. Katsuki stared down, vindictively grinning like a rabid ferret. For the first time in his life, Izuku felt hate for the first time for another person. And as he stared into Bakugo's eyes, he wanted him to feel pain.

"Think you're all that, Deku! You fucking rat—" Katsuki fell to the ground, twitching and seizing. Izuku painfully stood up, holding his left side as he glared down into Bakugo's eyes, eyes which shone red with black commas flecking the sides.

Izuku laughed in pain. "You disgust me, Kacchan. A strong man accepts defeat, a weak man wallows in failure, and only scum strike others when shown mercy. Remember this agony, remember this hurt. I don't know how I've done it, but this is what I've felt every day since we've met."

For one last measure, Izuku kicked Katsuki in the side and walked off. His classmates cleared the way, looking shell shocked as he walked by. Time stayed slowed as he exited.

The drumming died down and the euphoria stopped. What had he done? He—he hurt Kacchan so bad! They probably would never be friends again after this!

No. No. Bakugo never wanted to stay friends. He needed to stop being a doormat. He was strong now, he could make people hurt by looking at them and could see time in slomo. He was powerful—he could save people now. He was not a weakling anymore, he'd never let himself get hurt again.

Bakugo was just a coward who preyed on the weak, who attacked people when they showed him mercy. He was a mutt, a villain. If he was to save people, he needed to stop villains. He had done a good thing today, he had stopped someone from feeling pain, even if it had only been himself.

He walked home, head held high. He had been a hero today, even if his side ached. He had been a hero today, even if he left a boy twitching and shaking in agony. He had done the right thing today; he was a hero.

And as he walked home, admiring the world that appeared in immense detail, the world that moved at a crawl, he saw a puddle. And looking in that puddle, he saw his eyes. Eyes that were as red as blood, a single tomoe mark in each eye. Eyes that he had seen in Katsuki's face as he suffered on the floor.

He looked away. He had done the right thing, and clearly whatever god there was agreed. He had a quirk now, and who was he to complain?

He let time move at its normal flow, the world speeding up around him. The shift from slow to normal was really jarring. He wondered how that worked? Did his quirk give him an increase in adrenaline that made the world slow down? But that wouldn't make sense, he had heard before that adrenaline doesn't actually slow down time, all it does is make you remember in greater detail what is happening so it appears time is slow. So if it isn't adrenaline, what is it? Maybe his synapses are just firing faster? That's possible. Or his whole brain was redesigned. Or, ooh! Maybe his eyes were flipped upside down so that the brain didn't have to autocorrect the direction? Or mutter mutter mutter.

This is how he continued home, muttering about different theories as to how he could use his eyes and how they worked. And as he approached the door to his apartment, the door slammed open.

"Izuku! Where have you been?!" His mom said, grabbing his face and tilting it side to side, looking for scuffs and bruises.

Izuku grinned at her brightly, causing his mom to have a startled look on her face. "Mom—you won't believe this."

Wide eyed, his mom beckoned him to continue. "What has you so happy, Izuku?"

"This." Izuku's eyes turned red. "I unlocked my quirk! Ten years late, but still! It showed, mom. I can be a hero!"

"Oh! My baby boy!" She rushed forward, a waterfall of tears falling. He quickly joined in on her crying. "We have to call your dad!"

He nodded excitedly. "Right, right! He's gonna be so excited. Think he'll come and visit for this?"

His mom nodded. "Most jobs give leave when their kid gets their quirk, so almost definitely." She then pouted. "I wish I hadn't cooked curry already, I would have made you katsudon!"

He waved it off. "You could make it when dad gets back, then."

"Good idea. You two always loved it. I have some cute baby pictures of your younger birthdays where you two had plates full of the stuff!" His mom pulled him into their house, closing the door.

"Oh! We should invite the Bakugo's over to celebrate. You and Katsuki are still good friends, right Izuku?"

He cringed and sucked air through his teeth. "Not… exactly?"

She looked shocked. "What? But you two were practically attached at the hip as kids!"

"I, ah, think it'd be better if we didn't invite them over? Please?" He practically begged. It would be very, very bad if Bakugo came over to celebrate Izuku kicking his ass. That'd be bad. Very bad.

"Fine, honey. I'm still going to tell Mitsuki, though." She said with finality.

"Fine." He said, shrugging. "I don't have an issue with them knowing, I mean, Bakugo definitely knows I have a quirk now."

She tilted her head. "Did you first get it at school?"

"Something like that." He said, scratching his cheek.

She narrowed her eyes at him. "Are you lying to me, mister?"

"No?"

"I'll let it slide this one time, Izuku." She sighed. "I guess this just shows you're growing up, you're already keeping things from me!" She pinched his cheeks.

"Mooom." He whined, shaking himself free.

"Right, right. You're a big boy now. No affection from their parents is allowed anymore." She said jokingly. "Anyways, dinner should be ready in an hour, so be ready by then! We'll call your dad then."

"Ok, mom."

He walked to his room and pulled out his phone, opening up the camera. Pressing record, he watched his eyes go from green to red in the front view.

It was weird! His eyes just seemed to spin into his… red eyes? He should probably name them, and he had the perfect name. Sharingan. He didn't know why, but the name seemed perfect. Like it was calling out to his soul or something. Oh well, he'd figure that out later. For now, he needed to understand what his eyes could do.

He went to a fresh page in his notebook, and with glee, titled it "Izuku Midoriya". He put the entry into the glossary and began to put down what he knew about his eyes. They could make things slow down for… some reason. He put down all of his hypotheses for that and continued on. It can make people feel pain when you stare into their eyes and make them want to feel pain. Potentially illusions or induced empathy? And… What else?

Hmm. Thinking back to what happened, he could remember everything perfectly. Every detail was in pristine condition in his head. So, it gave an eidetic memory and enchanted vision. But what else?

He furrowed his brows, thinking hard on what happened. He could remember the fight perfectly, from Bakugo's punch to Bakugo's twitching body. That's it! The punch. He remembered it more than perfectly, it was like he himself had done the punch.

Testing the idea out, he set his phone on record and threw a right hook forward. He checked the footage and it was a perfect match. He could learn muscle memory just by observing it. That's so good, that's really, really good! He could just watch pro fighters fight and become the best fighter in the world off of the internet!

He put his notebook down, almost in shock, and smiled broadly. He was going to the best. With these eyes, no one could put him down again. He could save a thousand—no, a million lives.

He was going to be legendary.

I'm going to explain the quirk a bit more here. Basically, when Izuku faces a major challenge, his quirk changes him. It gives him the power of a character that suits the situation but it also gives him the corresponding personality it'll traits. So for his first change, he is a wallflower. He gains Madara's arrogance and battle lust as a result, but also the eyes as Madara's eyes match these traits. It can also go the other way around, where an ability is needed so he gains a trait. It won't always be a good trait.

I'm also probably going to make AFO more dangerous. He disappointed me in the manga. He has had, what, 200 yeasts to get ANY quirk and he somehow lost to all might? Nuh-uh, I don't believe he was that weak. So I'm making him stronger and I'm making all might stronger. I'm also going to make most of the shown characters stronger as well by either slightly changing how their quirk works or making them not stupid(like momo). Izuku has a strong quirk, yes, but it will pale in comparison to higher tiers. And the the changes to his personality will have very real consequences to his personality.