Chapter Four: Training Might
It was the weekend. Two days ago, in a memory that would forevermore be seared into his brain, Midoriya had swallowed a strand of All Might's hair.
It had been, uh, kind of, uh.
It had been what it was. He wasn't sure if he should be forming an opinion on it yet.
Now, however, the sun was shining, the water cold and the sands of Dagoba beach were pristine and empty of people. He and All Might were seated in a meditative lotus pose.
"Do you feel it?" All Might asked, eyes closed.
All Might, with his full-body swimsuit, looked like a bodybuilder from a different century.
Midoriya breathed and focused. There was a warmth at the center of his chest. It was almost outcompeted by the sunlight bubbling beneath his skin, but only barely.
If he had to use a word to describe it, it would be… strong.
"Yes."
"Right now," All Might said gravely, "do not use One for All."
Midoriya blinked before remembering his eyes were supposed to be closed.
"Um. Okay."
"It can strengthen your body – but it can also strengthen your quirk! Right now, I want you to try it with the latter rather than the former. Having a more powerful shield is one thing, having a too-powerful body will make you explode."
Midoriya took a deep, jittery breath before nodding firmly, trying to relax. "Right."
He just had to feed that power to his quirk right?
So, if he focused on the feeling of his quirk – of a winter sun, a summer morn, of pure, exhilarating power - on the one hand, and the feeling of One for All, of a raging bonfire, burning in his chest, on the other…
All Might cracked open an eye. "Is it working?"
Midoriya frowned. "I… I think so. Maybe?"
"Well, give it a try."
He did, face turning into a mass of wrinkles.
He looked, not to put too crass a point on it, extremely constipated.
"Hrm," said All Might, snapping a quick photo. "Well, keep trying!"
Midoriya kept trying.
He thought of sunlight, of electromagnetism and what he knew about the fundamental forces of the universe.
Nothing.
He thought of his training, of cleaning the beach, of doing lunges through town, of working with weights, of doing isometric exercises, of strengthening the light so that it existed at the level of his skin but did not peek out.
Nothing.
He thought of Kacchan and his terrified face, subsumed by sludge. He thought of Kacchan, face curled into a rictus of desperate hate, exploding towards him. He thought of the girl, the barreling car, the careless driver, still on his phone.
Light began to leak from his pores, but it was nothing new. This was the baseline manifestation of his electromagnetism quirk. Still, he tried to feed it that inner fire of One for All, because All Might had-
His right arm exploded.
Muscles developed over the course of the past half year flashed into prominence, veins bulging, nearly half again as big they'd been a second ago, every fiber flexing and tensing with unparalleled strength. The power he had thought of as being merely warm before became ferociously, overwhelmingly hot.
What a truly awesome power.
And it was all-
"Young Midoriya, stop!"
The fear in his mentor's voice poured ice down his spine.
He stopped.
When he opened his eyes, it was to the sight of his arm covered in a thicket's worth of purpling bruises, skin looking like it wanted to peel.
The pain hit a moment later as All Might prodded his injury.
"Ow!"
"Apologies, young man, but I must check!" the pinching and prodding fingers became more invasive, forcing a tear to his eyes, "It looks like you have no fractures, but this still needs to be iced. You are lucky that your bones did not grind themselves to dust using my power!"
"YeaoWCH, All Might, I'm not sure why it didn't work-"
"Hush. Focus on yourself, for once. In the future, your image of your power must be rock solid. The slightest distortion and this is the result. Still, I'm surprised. I half expected all your bones to shatter the first time you used it." He laughed. "You're much sturdier than I thought you'd be, even after seeing that car crash! You may become a worthy successor to my power before you even enter UA!"
"Really?"
All Might's mighty face took on a thoughtful mien.
"Well, maybe, I myself was born without a quirk: it is possible that One For All acclimatizes better to the quirkless than those with existing quirks."
"Hm," said Midoriya.
"Still, I'm sure I heard my own master say that One For All adds to the power of your own quirk."
Midoriya's eyes grew wide. As a boy who prided himself on his own thoroughness, this was a brand-new data point that he really should have thought of considering the nature of One For All. "Your master?"
All Might waved it off. "A story for another time! Let's get that arm iced, young man."
A sling and an icepack later, Midoriya was looking surprisingly bright-eyed and bushy-tailed from the front of the convenience store, his entire body trembling with suppressed curiosity.
All Might, emaciated, held out a bottle of mineral water. Midoriya accepted it, eyes still sparkling.
"You're not going to be able to leave this alone, are you?" All Might said ruefully.
Any other boy might have given a straightforward answer. Midoriya's face wrinkled in thought as he uncapped his water bottle.
"You're too honest!" the hero laughed. "Very well. Let's take a stroll. I shall tell you the very basics. But I must swear you to secrecy – what you learn here today, but a handful of people know."
His next words, spoken in a low whisper, put a damper on Midoriya's spirits.
"And most of them are dead."
-----
Gulls cawed.
Near the water, the beach was surprisingly loud, the surf lapping at the sands. The two of them sat in a companionable silence. Midoriya took a sip of his water, sneaking glances at All Might, who appeared to have decided that he needed to be in his bulked-up form for this conversation.
"I find myself unsure how to proceed," All Might admitted. "I have have never talked about my mentor before to someone who did not know her. In many ways she was an open book, but in some matters… she guarded her secrets jealously. You deserve to know everything, and yet, I do not wish to betray her trust." He turned to his pupil, expression grave. "Do you understand, young Midoriya?"
He nodded his head. "Y-yes."
"Very well. Where would you like me to begin?"
"Um, what was your master like?"
There was a faraway look in the superhero's eyes before they flashed back to the present. "Honestly… your own mother reminds me of her."
Midoriya tried to imagine his mom as All Might and felt like he was going to get an aneurysm. Mom was wonderful and the best and everything, but she wasn't… he snuck another glance at All Might and his rippling musculature, that.
All Might noticed and guffawed. "Do not think so shallowly, my boy! It is the spirit that animated them – the fierce protectiveness, the wisdom of experience, and the ability to know when to push on alone and when to ask for help. A very formidable woman, your mother."
Midoriya nodded.
"So too, was my master."
He was quiet, for a long time, long enough that Midoriya thought that that might be the end of it, when he began to speak again.
"When it comes to those who are being saved – you can't just save their bodies. If you are to be a real hero, you must think about their hearts too."
All Might suddenly turned towards him, index fingers propping up the corners of his mouth.
"No matter what happens, smile. For those who smile are the strongest of all."
And his teeth twinkled in the sunlight before he let his hands go down.
"That cornerstone of my own heroic philosophy was a lesson she taught me. You have a strong heart, Midoriya. I fear it is too strong, sometimes." Then, a complete non sequitur: "Has young Bakugou bothered you?"
Midoriya blinked, surprised. "K-kacchan? N-no. Not since that day! And none of his friends either."
"That's good, that's good." All Might drummed his fingers restlessly on his knees. "I will say no more on that subject, then."
Midoriya nodded his head, relieved. Bakugou might no longer be a bad subject, but it was not a good one either.
"S-so did your Master teach you anything else?" He quailed in front of All Might's suddenly intense look. "I mean, if your smile is hers, she must have been an amazing teacher!"
The look softened. "She was. Much better than I, for all that I am doing my best. You are more than I deserve, my boy."
Eh?
"Focus on the fundamentals." He held up a fist before extending it outwards. "An amateur's punch is nothing to fear, while the punch of a master martial artist is a wonder to behold. Pay attention to your form for from there springs your power." He paused, scratched his head. "Ah, well. Something like that. My Master did say I was a natural at it."
'A disgusting once-in-ten-lifetimes genius,' was more accurate, but words-shmerds.
Midoriya was already mimicking him, but stopped, his hand caught in All Might's own palm.
"Do you remember what happened to your other arm?" the hero asked drily. "Today, and possibly for the next week, you must devote yourself to getting better."
-----
The next day. Dagoba Beach.
All Might stared at Midoriya's arm incredulously, poking at the unbroken, unblemished skin. He'd known the boy could recover quickly, but this level, though minor in the grand scheme of things, was unheard of outside of actual regeneration quirks.
"It healed overnight?"
"Um. Yes?" Midoriya said. What he did not add was that by the time he'd gotten home, the sling was unnecessary and the bruises faded until they'd looked a week old, rather than new. It'd made explaining things to Mom completely unnecessary.
All Might's eyes narrowed shrewdly. "An effect of your quirk?"
"Yes. But it makes sense, doesn't it?" Before All Might could question that, Midoriya added: "It feels like it's sunlight, but there must be a purely biological component to it when I harden my body." He flexed his power, and the change, almost imperceptible, save for a shift of his muscles, came and went. "Or it might have to do with how my power is generated. But it's definitely quirk-related."
All Might nodded slowly.
"If that's the case… ah, I suppose I see why you had difficulty joining your quirk to One for All: changes to your body were part of your quirk to begin with."
Midoriya was beaming as he nodded. "I thought so too! And if One for All functions the way you says it does, that means that I can compound the effects of my quirk and One for All and create-"
Two hands settled on his shoulders. They were smaller and thinner than they should have been, the deep-set, sunken blue eyes staring into his own serious.
"Midoriya my boy, I do not wish to hinder your enthusiasm, but this is even more reason to take care. I do not believe One for All was ever joined to a body augmentation quirk. It would be no exaggeration to say that the results could be catastrophic. You must go slowly and carefully – do you understand?"
Midoriya took a deep breath through his nose. "Yes, sir!"
"I want you to think back to yesterday and hold the image in your head of activating One for All to enhance your body. Do you recall it?"
"Uh, ye-yeah?"
"Good, now all you need to do is tone it down."
Midoriya frowned. "Tone it-?"
"You delivered most, if not all of the power of One For All to your arm. You must limit it." He used his right hand to punch his open palm, cupping it demonstratively. "Your body must be able to hold onto the power: if it lets go, it breaks." His hand let go, fingers waggling, miming a broken toy, or maybe a plane. "Only use as much of that might as you can handle. Once you can do that, all you need to do is develop your body until it is capable of withstanding the full might of my might joined to your own!"
At the end of his last sentence All Might inflated, striking a heroic pose – only to deflate again, almost immediately after.
He coughed, blood running out of his mouth.
"All Might are you feeling-"
He was waved off. "I am fine, this is normal. But for you, today, I want to see some more fine control. Do you want to try using One For All again?"
There really was only one possible answer to that question.
"Yes!"
-------
This was probably what it was like seeing your child drive for the first time, Toshinori Yagi thought, watching young Midoriya breathe, wisps of light streaming upwards out of his skin, his green hair waving upwards in a gusts of self-generated wind.
Except instead of a nice little compact Hyundai, he'd given young Midoriya a nuclear tank and half the buttons were labeled 'self-destruct'.
How had his own master dealt with this tension?
Probably by remembering what it was they were fighting for. For her, a world without All for One, for him a world where everyone could smile.
Neither had achieved their dreams, but…
You had to trust the next generation. One for All was wish that echoed through the ages from one hero to the next.
Toshinori Yagi, not for the first time, wondered if he should have had Recovery Girl on hand, just in case. He himself had not truly needed any such healing, his body acclimating to the quirk surprisingly quickly, but although young Midoriya was brilliant in many ways (excessively so, even, his natural genius hidden by a long bullying campaign), in this specific domain he seemed to be less capable than his predecessor.
When Midoriya fell over, somehow having managed to make all his muscles simultaneously seize and cramp up, Toshinori Yagi had the hot compresses ready.
------
They were taking a break.
"When you punch, you must put your entire body into the punch."
Midoriya nodded, sketching furiously into his notebook.
Okay, so this was technically a workout, but it was a break from mastering One for All, so it was a break, kinda-sorta.
And learning to punch from All Might was like a dream. Even in his emaciated form, his expertise was clear.
"You lead in with your foot," he said, demonstrating a stomp that in his hero form would have cracked concrete, but here just made the sand depress downwards, "That in-step will be the foundation that will allow you to transmit your power."
He punched forward, arm twisting slightly. Weak and anemic as he was, it still made a sharp shah! sound as it cut through the air.
"You will be tempted to hit horizontally from the side," he said, swinging his fist in a slow arc, that traveled in front of his face. "For now, do not! Your fastest punch is a punch that moves in a straight line."
Hesitantly, Midoriya repeated the steps to himself in a mumbling breath, putting some finishing details to his sketch.
Then, he put the notebook down, stood up, took a deep breath, mumbled a bit more to himself, put a foot forward, twisted his body like he saw All Might twist his body and… punched.
Hrm. The sound wasn't the same at all. Still, All Might nodded approvingly.
"You have the right idea, but unless you plan on using One for All, that is an attack that would not hurt a fly, let alone a villain! Try again!"
He tried again. It still wasn't the right sound. How had All Might done it? Perhaps it had something to do with his wrist? The rotation of his shoulder?
"Hands at eye level, tighten your guard, step in and punch!" All Might barked.
Midoriya leapt to comply.
"Again!"
"Again!"
"Again!"
He'd lost count of how many punches he'd thrown by the time All Might stopped him. Sweat beaded down his body, and his breath came in ragged, full-body pants.
All Might, of course, looked none of the worse for wear.
"When using One for All, the rules will be different, but not so much so that this training is useless! Never forget that just as your fists are a weapon, so is One for All a weapon. Use it wisely and use it well."
"Yes…" he wheezed, "sir."
"Take five minutes to breathe. Then we'll go back to One for All training."
He all but collapsed onto the sand, head hanging down. "Yes, sir!"
"You're probably wondering why you're tired, young Midoriya."
The thought had crossed his mind, conceited as it was.
"Every sport specializes in a certain subset of muscles and skills. A runner is not a rower and a rower is not a hero! Combat is one of the most demanding. Men and women who can run marathons could very well run out of gas within less than half an hour when relying purely on their own muscle power to fight and not their quirks. Even if it is your punch that ends the fight, it would be a mistake to consider the step-in unimportant, or the force generated from your waist, hips and shoulder inconsequential."
"Yes, sir."
"Bringing out exactly the right amount of power to end a fight, using precisely the right technique at the right moment," All Might mimed another punch that cut through the air, "that is the essence of using One for All effectively. Otherwise it is just blindly lashing out with your power."
Midoriya nodded, eyes shining.
"I see that you have thought of something."
He had been thinking of One for All as a lock and key, a switch that was either on and off.
But that wasn't true, was it?
No, One for All was more like… like a gargantuan mountain of tennis balls. His body was swamped trying to handle their entirety. But really, he just needed enough for one ball at a time.
"Your metaphors could use some work!" was All Might's opinion when he told him. "But if that's the image you're going with, try it! There's only so much power you need. One for All is generous – too generous! Learn to refuse it!"
Midoriya breathed in.
He breathed out.
He stood up, taking up a stance. All Might was silent, watchful.
He punched once, experimentally. He could hear that slice of air. Not as good as All Might's, not yet, but getting there. Now, to give it some weight…
He took in a deep breath and closed his eyes.
He stood at the top of a fathomlessly tall mountain.
Above him, the sky was so blue it hurt to look at and the world below so small as to be but a speck. Clouds floated below while a sun, paradoxically far and yet closer than he had ever seen it, illuminating all. He could look out to the horizon from this point and the world was a vast, unhindered plane, stretching out into seeming infinity.
For some reason, it didn't seem… appropriate to use the image of a bajillion tennis balls, not here. He looked down and picked up a pebble.
Yes. He'd start with this much.
'Pointless.'
He whipped his head up and looked up and found himself staring at… a smudge. It was an outline in the air, like a shadow given shape and volume and texture, spread out to occupy the space a man would have.
Midoriya looked around. No other nightmare shadows seemed to be popping out of the mental woodwork – or mountain, in this case.
He waved a hand through it, and it was like passing a hand through water, ripples marring its surface.
'Stop that.'
Midoriya recoiled. For a second there, he'd thought it'd been his own self-doubts or something, manifesting themselves in an ambiguous way, but, nope, this was, well, this was getting creepy.
Yup, time to move on.
He took a deep breath, ignored the shadow thing and punched.
This time, it was like the air itself had been ripped asunder, blowing his hair back and sending the sand flying away from him in a perfect circle around him.
He opened his eyes. All Might was beaming.
"Very good. Now do it again."
-------
"A shadow?" All Might asked, a hand on his chin.
Flopped down onto the sand, the straw of a bottle emerging from his mouth, Midoriya nodded weakly.
If doing nothing but punch for hours on end had been grueling, doing the same with One for All had been crushing. He hadn't lost control and exploded or anything, but still, all his muscles burned.
(And not the burn of a good sprint or a thousand lunges, more like the burn of an oil tanker exploding, but inside of him.)
"Yeah. It was… next to me," his eyebrows made a valiant attempt to communicate its proximity. "I put my hand through it, and it said 'stop that.'"
All Might blinked down at him then, surprisingly, shuddered. "Eesh, well, that sounds creepy."
"So, it's not something to do with, errr, One for All?"
All Might had a faraway look in his eyes. "It certainly has not happened to me! But I promise to look into it. I will tell you if anything shows up."
Midoriya was desperately curious as to how All Might would 'look into it', but quashed the impulse to ask.
"Thank you, sir."
"My boy, do not look so downcast - your growth has exceeded my wildest expectations!"
Midoriya felt himself swelling with pride.
It popped a moment later.
"Which is why I believe we must find you a new mentor."
"Eh?"
"The more experiences you gain, the greater your foundation. The things you can learn from me are limited."
Midoriya nodded, but automatically. He had a look of complete befuddlement upon his face and this newest pronouncement did not appear to fix any gaps in his comprehension.
"My boy," All Might said seriously, "why do you think it is heroes-in-training go to school? It was not so long ago, after all, that there were no such schools at all – merely master-apprentice or hero-and-sidekick relationships."
A question, posed straightforwardly, appeared to break him out of his funk.
"A standardized curriculum raises the overall level of heroes everywhere?" he hazarded.
"That is one aspect to it, but another is this: you learn by doing. By practicing with me, you learn to fight as All Might and fight against All Might. Which is no bad thing: All Might is quite formidable. But what do you do against an opponent that can fly? Or one that can see the future? Or one that can summon lasers from any reflective surface?"
Midoriya was nodding now, looking longingly toward the knapsack where he kept his trusty hero notebook.
"You are growing so fast that you're already at the stage where you would benefit from a broader variety of experiences, young Midoriya. What say you?"
He sat up and immediately regretted it, his entire body crackling with pain. "Yes, sir!"
--------
The next day, wearing his best formalwear into an actual hero's HQ, he was staring up at a very, very intimidating-looking Gang Orca decked out in full hero gear – which resembled nothing more and nothing less than a mafioso-like business suit.
The pressure he exerted simply standing still was amazing.
"Hi," he said, gulping and offering a shy wave.
The hero took one look at him, picked him up and threw him to the side.
Midoriya rolled to his feet, hands already up in a stance that he had practiced thousands of times. The throw had surprised him, but it hadn't actually hurt him per se. Somehow, Gang Orca was already next to him, his red eyes staring at him, the coattails of his suit still moving forward due to momentum.
"You wish to be an intern?" Gang Orca asked.
"Y-yes?" said Midoriya.
A large red eye creased. A hand that could have engulfed his entire arm was extended and helped him to his feet.
"Then, let's start the interview."
It had been, uh, kind of, uh.
It had been what it was. He wasn't sure if he should be forming an opinion on it yet.
Now, however, the sun was shining, the water cold and the sands of Dagoba beach were pristine and empty of people. He and All Might were seated in a meditative lotus pose.
"Do you feel it?" All Might asked, eyes closed.
All Might, with his full-body swimsuit, looked like a bodybuilder from a different century.
Midoriya breathed and focused. There was a warmth at the center of his chest. It was almost outcompeted by the sunlight bubbling beneath his skin, but only barely.
If he had to use a word to describe it, it would be… strong.
"Yes."
"Right now," All Might said gravely, "do not use One for All."
Midoriya blinked before remembering his eyes were supposed to be closed.
"Um. Okay."
"It can strengthen your body – but it can also strengthen your quirk! Right now, I want you to try it with the latter rather than the former. Having a more powerful shield is one thing, having a too-powerful body will make you explode."
Midoriya took a deep, jittery breath before nodding firmly, trying to relax. "Right."
He just had to feed that power to his quirk right?
So, if he focused on the feeling of his quirk – of a winter sun, a summer morn, of pure, exhilarating power - on the one hand, and the feeling of One for All, of a raging bonfire, burning in his chest, on the other…
All Might cracked open an eye. "Is it working?"
Midoriya frowned. "I… I think so. Maybe?"
"Well, give it a try."
He did, face turning into a mass of wrinkles.
He looked, not to put too crass a point on it, extremely constipated.
"Hrm," said All Might, snapping a quick photo. "Well, keep trying!"
Midoriya kept trying.
He thought of sunlight, of electromagnetism and what he knew about the fundamental forces of the universe.
Nothing.
He thought of his training, of cleaning the beach, of doing lunges through town, of working with weights, of doing isometric exercises, of strengthening the light so that it existed at the level of his skin but did not peek out.
Nothing.
He thought of Kacchan and his terrified face, subsumed by sludge. He thought of Kacchan, face curled into a rictus of desperate hate, exploding towards him. He thought of the girl, the barreling car, the careless driver, still on his phone.
Light began to leak from his pores, but it was nothing new. This was the baseline manifestation of his electromagnetism quirk. Still, he tried to feed it that inner fire of One for All, because All Might had-
His right arm exploded.
Muscles developed over the course of the past half year flashed into prominence, veins bulging, nearly half again as big they'd been a second ago, every fiber flexing and tensing with unparalleled strength. The power he had thought of as being merely warm before became ferociously, overwhelmingly hot.
What a truly awesome power.
And it was all-
"Young Midoriya, stop!"
The fear in his mentor's voice poured ice down his spine.
He stopped.
When he opened his eyes, it was to the sight of his arm covered in a thicket's worth of purpling bruises, skin looking like it wanted to peel.
The pain hit a moment later as All Might prodded his injury.
"Ow!"
"Apologies, young man, but I must check!" the pinching and prodding fingers became more invasive, forcing a tear to his eyes, "It looks like you have no fractures, but this still needs to be iced. You are lucky that your bones did not grind themselves to dust using my power!"
"YeaoWCH, All Might, I'm not sure why it didn't work-"
"Hush. Focus on yourself, for once. In the future, your image of your power must be rock solid. The slightest distortion and this is the result. Still, I'm surprised. I half expected all your bones to shatter the first time you used it." He laughed. "You're much sturdier than I thought you'd be, even after seeing that car crash! You may become a worthy successor to my power before you even enter UA!"
"Really?"
All Might's mighty face took on a thoughtful mien.
"Well, maybe, I myself was born without a quirk: it is possible that One For All acclimatizes better to the quirkless than those with existing quirks."
"Hm," said Midoriya.
"Still, I'm sure I heard my own master say that One For All adds to the power of your own quirk."
Midoriya's eyes grew wide. As a boy who prided himself on his own thoroughness, this was a brand-new data point that he really should have thought of considering the nature of One For All. "Your master?"
All Might waved it off. "A story for another time! Let's get that arm iced, young man."
A sling and an icepack later, Midoriya was looking surprisingly bright-eyed and bushy-tailed from the front of the convenience store, his entire body trembling with suppressed curiosity.
All Might, emaciated, held out a bottle of mineral water. Midoriya accepted it, eyes still sparkling.
"You're not going to be able to leave this alone, are you?" All Might said ruefully.
Any other boy might have given a straightforward answer. Midoriya's face wrinkled in thought as he uncapped his water bottle.
"You're too honest!" the hero laughed. "Very well. Let's take a stroll. I shall tell you the very basics. But I must swear you to secrecy – what you learn here today, but a handful of people know."
His next words, spoken in a low whisper, put a damper on Midoriya's spirits.
"And most of them are dead."
-----
Gulls cawed.
Near the water, the beach was surprisingly loud, the surf lapping at the sands. The two of them sat in a companionable silence. Midoriya took a sip of his water, sneaking glances at All Might, who appeared to have decided that he needed to be in his bulked-up form for this conversation.
"I find myself unsure how to proceed," All Might admitted. "I have have never talked about my mentor before to someone who did not know her. In many ways she was an open book, but in some matters… she guarded her secrets jealously. You deserve to know everything, and yet, I do not wish to betray her trust." He turned to his pupil, expression grave. "Do you understand, young Midoriya?"
He nodded his head. "Y-yes."
"Very well. Where would you like me to begin?"
"Um, what was your master like?"
There was a faraway look in the superhero's eyes before they flashed back to the present. "Honestly… your own mother reminds me of her."
Midoriya tried to imagine his mom as All Might and felt like he was going to get an aneurysm. Mom was wonderful and the best and everything, but she wasn't… he snuck another glance at All Might and his rippling musculature, that.
All Might noticed and guffawed. "Do not think so shallowly, my boy! It is the spirit that animated them – the fierce protectiveness, the wisdom of experience, and the ability to know when to push on alone and when to ask for help. A very formidable woman, your mother."
Midoriya nodded.
"So too, was my master."
He was quiet, for a long time, long enough that Midoriya thought that that might be the end of it, when he began to speak again.
"When it comes to those who are being saved – you can't just save their bodies. If you are to be a real hero, you must think about their hearts too."
All Might suddenly turned towards him, index fingers propping up the corners of his mouth.
"No matter what happens, smile. For those who smile are the strongest of all."
And his teeth twinkled in the sunlight before he let his hands go down.
"That cornerstone of my own heroic philosophy was a lesson she taught me. You have a strong heart, Midoriya. I fear it is too strong, sometimes." Then, a complete non sequitur: "Has young Bakugou bothered you?"
Midoriya blinked, surprised. "K-kacchan? N-no. Not since that day! And none of his friends either."
"That's good, that's good." All Might drummed his fingers restlessly on his knees. "I will say no more on that subject, then."
Midoriya nodded his head, relieved. Bakugou might no longer be a bad subject, but it was not a good one either.
"S-so did your Master teach you anything else?" He quailed in front of All Might's suddenly intense look. "I mean, if your smile is hers, she must have been an amazing teacher!"
The look softened. "She was. Much better than I, for all that I am doing my best. You are more than I deserve, my boy."
Eh?
"Focus on the fundamentals." He held up a fist before extending it outwards. "An amateur's punch is nothing to fear, while the punch of a master martial artist is a wonder to behold. Pay attention to your form for from there springs your power." He paused, scratched his head. "Ah, well. Something like that. My Master did say I was a natural at it."
'A disgusting once-in-ten-lifetimes genius,' was more accurate, but words-shmerds.
Midoriya was already mimicking him, but stopped, his hand caught in All Might's own palm.
"Do you remember what happened to your other arm?" the hero asked drily. "Today, and possibly for the next week, you must devote yourself to getting better."
-----
The next day. Dagoba Beach.
All Might stared at Midoriya's arm incredulously, poking at the unbroken, unblemished skin. He'd known the boy could recover quickly, but this level, though minor in the grand scheme of things, was unheard of outside of actual regeneration quirks.
"It healed overnight?"
"Um. Yes?" Midoriya said. What he did not add was that by the time he'd gotten home, the sling was unnecessary and the bruises faded until they'd looked a week old, rather than new. It'd made explaining things to Mom completely unnecessary.
All Might's eyes narrowed shrewdly. "An effect of your quirk?"
"Yes. But it makes sense, doesn't it?" Before All Might could question that, Midoriya added: "It feels like it's sunlight, but there must be a purely biological component to it when I harden my body." He flexed his power, and the change, almost imperceptible, save for a shift of his muscles, came and went. "Or it might have to do with how my power is generated. But it's definitely quirk-related."
All Might nodded slowly.
"If that's the case… ah, I suppose I see why you had difficulty joining your quirk to One for All: changes to your body were part of your quirk to begin with."
Midoriya was beaming as he nodded. "I thought so too! And if One for All functions the way you says it does, that means that I can compound the effects of my quirk and One for All and create-"
Two hands settled on his shoulders. They were smaller and thinner than they should have been, the deep-set, sunken blue eyes staring into his own serious.
"Midoriya my boy, I do not wish to hinder your enthusiasm, but this is even more reason to take care. I do not believe One for All was ever joined to a body augmentation quirk. It would be no exaggeration to say that the results could be catastrophic. You must go slowly and carefully – do you understand?"
Midoriya took a deep breath through his nose. "Yes, sir!"
"I want you to think back to yesterday and hold the image in your head of activating One for All to enhance your body. Do you recall it?"
"Uh, ye-yeah?"
"Good, now all you need to do is tone it down."
Midoriya frowned. "Tone it-?"
"You delivered most, if not all of the power of One For All to your arm. You must limit it." He used his right hand to punch his open palm, cupping it demonstratively. "Your body must be able to hold onto the power: if it lets go, it breaks." His hand let go, fingers waggling, miming a broken toy, or maybe a plane. "Only use as much of that might as you can handle. Once you can do that, all you need to do is develop your body until it is capable of withstanding the full might of my might joined to your own!"
At the end of his last sentence All Might inflated, striking a heroic pose – only to deflate again, almost immediately after.
He coughed, blood running out of his mouth.
"All Might are you feeling-"
He was waved off. "I am fine, this is normal. But for you, today, I want to see some more fine control. Do you want to try using One For All again?"
There really was only one possible answer to that question.
"Yes!"
-------
This was probably what it was like seeing your child drive for the first time, Toshinori Yagi thought, watching young Midoriya breathe, wisps of light streaming upwards out of his skin, his green hair waving upwards in a gusts of self-generated wind.
Except instead of a nice little compact Hyundai, he'd given young Midoriya a nuclear tank and half the buttons were labeled 'self-destruct'.
How had his own master dealt with this tension?
Probably by remembering what it was they were fighting for. For her, a world without All for One, for him a world where everyone could smile.
Neither had achieved their dreams, but…
You had to trust the next generation. One for All was wish that echoed through the ages from one hero to the next.
Toshinori Yagi, not for the first time, wondered if he should have had Recovery Girl on hand, just in case. He himself had not truly needed any such healing, his body acclimating to the quirk surprisingly quickly, but although young Midoriya was brilliant in many ways (excessively so, even, his natural genius hidden by a long bullying campaign), in this specific domain he seemed to be less capable than his predecessor.
When Midoriya fell over, somehow having managed to make all his muscles simultaneously seize and cramp up, Toshinori Yagi had the hot compresses ready.
------
They were taking a break.
"When you punch, you must put your entire body into the punch."
Midoriya nodded, sketching furiously into his notebook.
Okay, so this was technically a workout, but it was a break from mastering One for All, so it was a break, kinda-sorta.
And learning to punch from All Might was like a dream. Even in his emaciated form, his expertise was clear.
"You lead in with your foot," he said, demonstrating a stomp that in his hero form would have cracked concrete, but here just made the sand depress downwards, "That in-step will be the foundation that will allow you to transmit your power."
He punched forward, arm twisting slightly. Weak and anemic as he was, it still made a sharp shah! sound as it cut through the air.
"You will be tempted to hit horizontally from the side," he said, swinging his fist in a slow arc, that traveled in front of his face. "For now, do not! Your fastest punch is a punch that moves in a straight line."
Hesitantly, Midoriya repeated the steps to himself in a mumbling breath, putting some finishing details to his sketch.
Then, he put the notebook down, stood up, took a deep breath, mumbled a bit more to himself, put a foot forward, twisted his body like he saw All Might twist his body and… punched.
Hrm. The sound wasn't the same at all. Still, All Might nodded approvingly.
"You have the right idea, but unless you plan on using One for All, that is an attack that would not hurt a fly, let alone a villain! Try again!"
He tried again. It still wasn't the right sound. How had All Might done it? Perhaps it had something to do with his wrist? The rotation of his shoulder?
"Hands at eye level, tighten your guard, step in and punch!" All Might barked.
Midoriya leapt to comply.
"Again!"
"Again!"
"Again!"
He'd lost count of how many punches he'd thrown by the time All Might stopped him. Sweat beaded down his body, and his breath came in ragged, full-body pants.
All Might, of course, looked none of the worse for wear.
"When using One for All, the rules will be different, but not so much so that this training is useless! Never forget that just as your fists are a weapon, so is One for All a weapon. Use it wisely and use it well."
"Yes…" he wheezed, "sir."
"Take five minutes to breathe. Then we'll go back to One for All training."
He all but collapsed onto the sand, head hanging down. "Yes, sir!"
"You're probably wondering why you're tired, young Midoriya."
The thought had crossed his mind, conceited as it was.
"Every sport specializes in a certain subset of muscles and skills. A runner is not a rower and a rower is not a hero! Combat is one of the most demanding. Men and women who can run marathons could very well run out of gas within less than half an hour when relying purely on their own muscle power to fight and not their quirks. Even if it is your punch that ends the fight, it would be a mistake to consider the step-in unimportant, or the force generated from your waist, hips and shoulder inconsequential."
"Yes, sir."
"Bringing out exactly the right amount of power to end a fight, using precisely the right technique at the right moment," All Might mimed another punch that cut through the air, "that is the essence of using One for All effectively. Otherwise it is just blindly lashing out with your power."
Midoriya nodded, eyes shining.
"I see that you have thought of something."
He had been thinking of One for All as a lock and key, a switch that was either on and off.
But that wasn't true, was it?
No, One for All was more like… like a gargantuan mountain of tennis balls. His body was swamped trying to handle their entirety. But really, he just needed enough for one ball at a time.
"Your metaphors could use some work!" was All Might's opinion when he told him. "But if that's the image you're going with, try it! There's only so much power you need. One for All is generous – too generous! Learn to refuse it!"
Midoriya breathed in.
He breathed out.
He stood up, taking up a stance. All Might was silent, watchful.
He punched once, experimentally. He could hear that slice of air. Not as good as All Might's, not yet, but getting there. Now, to give it some weight…
He took in a deep breath and closed his eyes.
He stood at the top of a fathomlessly tall mountain.
Above him, the sky was so blue it hurt to look at and the world below so small as to be but a speck. Clouds floated below while a sun, paradoxically far and yet closer than he had ever seen it, illuminating all. He could look out to the horizon from this point and the world was a vast, unhindered plane, stretching out into seeming infinity.
For some reason, it didn't seem… appropriate to use the image of a bajillion tennis balls, not here. He looked down and picked up a pebble.
Yes. He'd start with this much.
'Pointless.'
He whipped his head up and looked up and found himself staring at… a smudge. It was an outline in the air, like a shadow given shape and volume and texture, spread out to occupy the space a man would have.
Midoriya looked around. No other nightmare shadows seemed to be popping out of the mental woodwork – or mountain, in this case.
He waved a hand through it, and it was like passing a hand through water, ripples marring its surface.
'Stop that.'
Midoriya recoiled. For a second there, he'd thought it'd been his own self-doubts or something, manifesting themselves in an ambiguous way, but, nope, this was, well, this was getting creepy.
Yup, time to move on.
He took a deep breath, ignored the shadow thing and punched.
This time, it was like the air itself had been ripped asunder, blowing his hair back and sending the sand flying away from him in a perfect circle around him.
He opened his eyes. All Might was beaming.
"Very good. Now do it again."
-------
"A shadow?" All Might asked, a hand on his chin.
Flopped down onto the sand, the straw of a bottle emerging from his mouth, Midoriya nodded weakly.
If doing nothing but punch for hours on end had been grueling, doing the same with One for All had been crushing. He hadn't lost control and exploded or anything, but still, all his muscles burned.
(And not the burn of a good sprint or a thousand lunges, more like the burn of an oil tanker exploding, but inside of him.)
"Yeah. It was… next to me," his eyebrows made a valiant attempt to communicate its proximity. "I put my hand through it, and it said 'stop that.'"
All Might blinked down at him then, surprisingly, shuddered. "Eesh, well, that sounds creepy."
"So, it's not something to do with, errr, One for All?"
All Might had a faraway look in his eyes. "It certainly has not happened to me! But I promise to look into it. I will tell you if anything shows up."
Midoriya was desperately curious as to how All Might would 'look into it', but quashed the impulse to ask.
"Thank you, sir."
"My boy, do not look so downcast - your growth has exceeded my wildest expectations!"
Midoriya felt himself swelling with pride.
It popped a moment later.
"Which is why I believe we must find you a new mentor."
"Eh?"
"The more experiences you gain, the greater your foundation. The things you can learn from me are limited."
Midoriya nodded, but automatically. He had a look of complete befuddlement upon his face and this newest pronouncement did not appear to fix any gaps in his comprehension.
"My boy," All Might said seriously, "why do you think it is heroes-in-training go to school? It was not so long ago, after all, that there were no such schools at all – merely master-apprentice or hero-and-sidekick relationships."
A question, posed straightforwardly, appeared to break him out of his funk.
"A standardized curriculum raises the overall level of heroes everywhere?" he hazarded.
"That is one aspect to it, but another is this: you learn by doing. By practicing with me, you learn to fight as All Might and fight against All Might. Which is no bad thing: All Might is quite formidable. But what do you do against an opponent that can fly? Or one that can see the future? Or one that can summon lasers from any reflective surface?"
Midoriya was nodding now, looking longingly toward the knapsack where he kept his trusty hero notebook.
"You are growing so fast that you're already at the stage where you would benefit from a broader variety of experiences, young Midoriya. What say you?"
He sat up and immediately regretted it, his entire body crackling with pain. "Yes, sir!"
--------
The next day, wearing his best formalwear into an actual hero's HQ, he was staring up at a very, very intimidating-looking Gang Orca decked out in full hero gear – which resembled nothing more and nothing less than a mafioso-like business suit.
The pressure he exerted simply standing still was amazing.
"Hi," he said, gulping and offering a shy wave.
The hero took one look at him, picked him up and threw him to the side.
Midoriya rolled to his feet, hands already up in a stance that he had practiced thousands of times. The throw had surprised him, but it hadn't actually hurt him per se. Somehow, Gang Orca was already next to him, his red eyes staring at him, the coattails of his suit still moving forward due to momentum.
"You wish to be an intern?" Gang Orca asked.
"Y-yes?" said Midoriya.
A large red eye creased. A hand that could have engulfed his entire arm was extended and helped him to his feet.
"Then, let's start the interview."