One Stands For All
"Speech"
'Thoughts'
"{Speaking a different language}"
AN: Manga spoiler notes at the end
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At U.A. High School, the annual hero course entrance exam was in full swing. Thousands of applicants rushed around, trying to destroy as many robots as possible to rack up points. Among them was young Izuku Midoriya, a boy who had been Quirkless less than twelve hours prior. While his idol All Might had granted him his own Quirk, known as One For All, Izuku had no idea how to use it. All Might's advice wasn't much help either. Izuku had tried to "clench his butt cheeks and yell, 'Smash!'" but only succeeded in denting a One Pointer and badly bruising his knuckles. In a desperate attempt to actually defeat at least a few robots, the verdette grabbed part of a Two Pointer's severed leg to use as a makeshift weapon. It was a little too big to wield comfortably, but compared to hauling a fridge with All Might sitting atop it or pushing a wheelless pickup truck across the beach, it was nothing. With his new weapon in hand, the boy ran to find some points.
Luck was with him as he had barely turned the corner when he nearly ran into a One Pointer. The robot quickly brought its guns to bear, only for Izuku to leap up and smash its head with his improvised bludgeon. As it collapsed, Izuku stared in amazement. "I- I did it! I actually defeated one!" However, his celebration was short-lived as several more robots came out of the nearby alleys: a One Pointer, a trio of Two Pointers, and a Three Pointer. "Oh come on!" There was no way he could defeat so many at once! 'Come on, One For All, if you're going to work, now's the time!' The menagerie of robots opened fire, forcing Izuku to desperately dodge what he could and use the severed leg to block what he couldn't. 'Come on, work you goddamn Quirk!'
From an outsider's perspective, a score of black tendrils burst into being around the boy, shooting in random directions. While some latched onto the attacking robots, others simply kept going until they struck one of the nearby buildings. The tendrils all then jerked in a single direction, smashing the robots into the side of a skyscraper and reducing them to scrap.
However, from Izuku's perspective, a transparent bald man wearing black leather clothes and a bandolier had sprung into existence and fired those same tendrils from his arms before hurling the various robots at the nearby building. Afterwards, the man pointed at him and yelled, "You gotta do better than that, dude!" before vanishing as quickly as he appeared, leaving Izuku standing alone among the wreckage.
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Within a darkened room, the faculty watched the various applicants smash robots, dodge traps, and occasionally help each other. Each gave their own commentary on this or that applicant that caught their eye. "Seems we have a few particularly noble souls this year," Cementoss noted. Onscreen, three different applicants were using their Quirks to protect others from various attacks. A young woman with vines for hair pulled her fellow competitors out of the way of falling debris. Another teen enlarged her hands to smash some robots that had snuck up on a smaller examinee. And a black-haired teen hardened his body as he tanked several shots from a group of One Pointers that were aiming at a downed boy.
"Not to mention some creative Quirk applications," Nezu commented as he sipped his tea. The screens switched to show a blocky boy directing a flock of birds to distract robots as he attacked them. On another screen, a green-haired girl waited atop a wall and ambushed a passing robot with her tongue. A third screen displayed a young woman with a body made of some sort of oily liquid flow into a robot. A few seconds later, it stopped moving entirely and she flowed back out again.
Midnight perked up as one student caught her eye. "Well now, that's an interesting Quirk." A screen showed Izuku just as the black tendrils threw his attackers into a wall.
Consulting her notes, Thirteen spoke up, "Entrant number 1507, Izuku Midoriya. Quirk: Super-power? How did he get Super-power from that? I'd expect something like Tentacles or Black Rope or Shadow Web, depending on how edgy he is." It was a shared sentiment within the room. Plenty of people gave unusual or misleading names to their Quirks, but this was just ridiculous.
In his civilian form, Toshinori stared at the screen in confusion. 'Young Izuku is Quirkless though. Where did he get this Quirk? Did he perhaps have a dormant Quirk that One For All somehow activated?' Unfortunately, he'd have to wait for his questions to be answered. The exam was far from finished.
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Staring at where the apparition had been, Izuku's mind tried and failed to process what he had just seen. "W-w-w-w-wha-" Technically speaking, a transparent man with tentacles wasn't that weird in a world of Quirks. Current Pro Heroes around the world included a living slab of concrete, a two-dimensional man, and a giant Godzilla knockoff who somehow wasn't sued into oblivion by Toho Co. So in theory, what Izuku just saw wasn't too implausible. At least so long as you ignored the man also having the power to appear from nowhere and disappear just as suddenly. In practice, Izuku's mind kept skipping like a badly scratched CD. 'Was that One For All? But All Might didn't mention that! And those tendrils! Is One For All haunted?!'
"FIVE MINUTES REMAINING!" Present Mic's booming voice snapped Izuku out of his thoughts. Shaking himself, he resolved to focus on the test first and foremost. He could worry about haunted Quirks later. Right now, he had an exam to pass. While his initial "weapon" was lost, there were plenty of options among the freshly destroyed robots. Taking the most viable piece of scrap, Izuku ran, looking for more enemies.
For the next few minutes, Izuku smashed whatever stragglers he could find, earning himself another seven points from various lone robots. Yet as he ran about, it seemed the robots were starting to run out. Worse, he heard people shouting out scores more than double his meager seventeen points. Just then, he spotted that flamboyant blonde boy from earlier. He was on the ground and grabbing his stomach as a One Pointer loomed over him. Without thinking, Izuku ran in and swung his makeshift weapon, aiming for the head like before. His attack struck true, destroying its camera and damaging the rest of the head, making the robot power down as it was "killed". The blonde teen looked up from where he was curled up and saw the one who saved him, "Oh! Bonjour again mon ami. I told you we make a good team!"
Izuku's answer was cut off by a thundering rumble. Both teens turned and watched in terror as a titanic robot appeared above the buildings. Eight glowing red lenses on a rectangular green plate formed a face that completely dwarfed the other robots in the exam. It peered down at the various examinees for a moment before rumbling their way on colossal tank treads, demolishing anything and everything in its path. Countless hero hopefuls screamed in terror as they fled. "THAT'S THE GIMMICK?!" "RUN FOR YOUR LIVES!" "I DON'T WANT TO DIE A VIRGIN!" Suffice to say, some panicked. Just a little.
The French teen got up and ran while Izuku was captivated by the Zero Pointer. Its approach was like watching a train wreck and he couldn't look away. At least, he couldn't until he heard a familiar voice, "Ow~! My leg!" Almost robotically, his head turned to look near the behemoth's treads. On the ground, laid the nice girl from earlier, her foot trapped beneath a chunk of rubble.
Without thinking, Izuku sprinted towards her. The test, the Zero Pointer, One For All. None of it mattered compared to the fact someone needed to be saved and no one else was doing anything. In a flash, he was by her side, trying to use his makeshift bludgeon to lever the slab of concrete off her. All the while, the Zero Pointer trudged closer and closer. "Don't worry, I'll get you out of here in no time," Izuku told Ochako, doing his best to sound confident and reassuring. 'If you're going to show up again tentacle guy, now would be a REALLY good time! Or anyone! Just! Let! Me! Save! Her!'
This time, it wasn't the bald man who appeared. No, instead a woman was suddenly floating behind Izuku. Two meters tall and well-muscled, she wore a black jumpsuit with yellow gloves, a red sash, and white cape. Unlike the previous specter, she seemed completely solid, not remotely transparent. She took a moment to take in the situation before she gave both teens a friendly smile. "You two just sit tight while I handle this." With a burst of speed, she flew upward and smashed into and through the Zero Pointer's head, leaving behind a gaping hole. Yet before she could turn back to help get the girl unstuck, she found herself starting to fade away. "Hey, what's this?! I wasn't done yet!" Heedless of her wishes, the amazon grew more transparent until she disappeared entirely.
Down below, Izuku had only just lifted the rubble enough for Ochako to pull her leg free when a sudden wave of exhaustion hit him. Ochako watched in shock as the plain looking boy simply collapsed to the ground unconscious. A groan of tortured metal from above reminded her that they weren't safe yet. The critically damaged Zero Pointer started to collapse and while most of it was falling away from them, random parts from it and the damaged buildings were still headed right for them. Bracing herself, Ochako muttered, "I'm gonna regret this t'morrow." And activated her Quirk on both herself and the friendly boy before launching them both away with as much strength as she could muster. The pair barely made it past the falling rubble when she could hold out no longer. Releasing her quirk, the young woman promptly vomited up everything she'd eaten so far that day before collapsing, thankfully away from the foul liquid.
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Within the Proctors' room, almost everyone stared at one particular screen in confusion. Everyone except for Toshinori. The questions about who that random Pro was washed over him unheeded, like waves against a cliff. He knew who that had been, just as he knew what he saw was impossible. Nana Shimura had died nearly forty years ago. And yet, she had suddenly appeared today to save his successor, completely unchanged from his memories and untouched by time. At least until she evaporated like mist under the sun.
Now despite some opinions to the contrary, Toshinori wasn't a muscle-headed idiot. Stubborn and sometimes reckless, yes. But not an idiot. If Nana had appeared elsewhere, it could have been a coincidence or possibly a plot by one of All For One's lieutenants. But she had specifically shown up to save Izuku (after all, Nezu had already checked the security footage). 'So it MUST be something to do with One For All. I've glimpsed the previous holders before, especially when I killed All For One. Could this be a side effect from how much power it's stockpiled?'
Out of the corner of his eye, the number one hero saw Nezu give him a knowing look. If he was honest, Toshinori wouldn't be surprised if the principal had already figured everything out.
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A week later, Izuku sat at his desk, jotting down more notes about One For All and how he apparently used it. He still hadn't accessed the same overwhelming strength that All Might had, but he had learned more about the phantoms he was conjuring. According to the sole woman among them, Nana, he learned they were the previous holders of One For All and they had access to both One For All and their own Quirks when he summoned them. Unfortunately, learning more was slow going. The more solid they were and the more they interacted with the world, the more energy it drained from him. Even at minimal power, where they were barely more than faint ghosts and nearly incapable of interacting with the rest of the world, he could only maintain any of them for thirty-two minutes in a given day.
Besides Nana and Daigoro, whom he had summoned during the Entrance Exam, there were six others he could potentially conjure, including All Might! Well, sorta. Nana said his "ghost" seemed half-formed so Izuku might not be able to summon him. Beyond that, he had been told to focus on practical usage of his Quirk, with the Sixth Holder En stating that every moment spent chatting was less time he could train. Until he could use One For All more, his billion questions about their lives, the rise of Quirks, and more would have to wait.
Just then, Izuku's mother frantically knocked on the door. "Izuku!" The door burst open, revealing his mother crawling on the ground with a letter in her hand. "Izuku, it's here! Your letter from U.A.!" Eyes widening in shock and anticipation, Izuku scrambled over to take the letter. For a brief moment, he considered asking his mother to leave the room so he could read the letter alone. He still hadn't forgotten how she had let him down when he needed her support the most. But still, ever since he'd actually started applying himself, his mother had been right behind him, encouraging him to chase his dream even if she was afraid of what said dream would entail. So instead, Izuku helped his mother back to her feet and let her stand behind him as he sat back down at his desk and tore open the envelope.
Rather than a paper letter, a small metallic device fell out onto the wooden surface of Izuku's desk. A moment later, a large holographic projection filled the air. "I AM HERE… as a projection!" All Might spoke into what was obviously a camera of some sort, wearing a yellow pinstriped suit. "I'm sorry for the radio silence Young Midoriya but with great power comes a great deal of paperwork. For you see, you are looking at U.A.'s newest faculty member!" There was a brief pause as a hand suddenly appeared from off-camera and made an impatient gesture. "Hurry it up? But I have so much to tell… wait, I have to make how many of these? You'll edit it in post-production? Alright then. Young Midoriya, you did exceptionally well on the written exam, scoring in the 90th Percentile! However, I'm afraid that a mere 19 points on the practical is well below the cutoff mark this year."
"Oh Izuku," Inko started crying over her son's dream being crushed again.
"But, but I tried so hard," Izuku muttered in despair. All that blood, sweat, and oh so many tears, wasted!
"Or at least, that's what I would say if that were the end of the story! Haha, I must have been a showman in a past life!" Never in his life had Izuku ever thought it was possible for anyone but a villain to want to punch All Might. But right now? He felt he understood the sentiment. "Observe," All Might gestured to his side and a large screen appeared. On it, Izuku disabled a One Pointer before it could harm that one flamboyant teen. Then the feed switched to him, freeing Uraraka from the rubble and summoning Nana to destroy the Zero Pointer. "What kind of hero school wouldn't reward such selfless actions? Heroism is more than just lip service for the cameras! No, we were looking for more than just Villain Points! Introducing, Hero Points! Awarded to true heroes such as yourself for their selfless actions in helping others and awarded by a panel of judges!"
The screen changed, showing names and points that could only be exam rankings.
No. 1 Eijiro Kirishima
Villain Points: 41
Hero Points: 40
No. 2 Izuku Midoriya
Villain Points: 19
Hero Points: 60
No. 3 Ochako Uraraka
Villain Points: 28
Hero Points: 50
No. 4 Katsuki Bakugo
Villain Points: 77
Hero Points: 0
Izuku paid no mind to the rest of the names. He had passed. He had gotten second place! He had beaten Kacchan! Okay, that last bit might actually be a problem. But still, he hadn't failed! He was going to U.A.! As his mother hugged him from behind and both Midoriyas cried rivers of happy tears, All Might said those words that made everything real, "Come Young Midoriya. This is your hero academia." That night, the downstairs neighbors called the fire department about flooding.
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"Toshinori-sensei!"
All Might, currently in his civilian form, turned and smiled at his protégé. The boy had done magnificently during the Entrance Exam. Far from ideally of course, but magnificently nonetheless. Though of course thinking of Izuku's performance brought up memories and questions. Memories of better times, and questions of how exactly young Midoriya did what he had. "Young Midoriya, it is good to see you!"
However, before he could actually ask any of his questions Izuku blurted out, "One For All is haunted!"
A hero career spanning thirty-seven years and multiple continents hadn't prepared him for that sentence. "I- what?"
"Your Quirk is haunted! During the exam I summoned previous holders of One For All and they could use their Quirks and they could talk and mumblemumblemumble…"
"Slow down, my boy! My Quirk isn't super hearing you know!" Once Izuku had stopped his mumble storm, All Might asked what he felt was the most important question, "Now, you said you could summon the previous holders. Are they actually the holders or just some kind of constructs that look like them?"
"Um, well, I think they're the real deal. Nana told me to tell you she's proud of the hero you become. More than that, she's proud of the man you've become."
His words stopped Toshinori cold. He had known intellectually that Nana would probably be proud of him. That he had become the greatest hero he possibly could. But like everyone, there was always those niggling doubts at the back of his mind. Saying he should have been able to save her, that he could be doing more to help people, that he wasn't truly a worthy successor. "She said that?" He wanted to believe Izuku. If nothing else, the boy had no way of knowing Nana's name. And yet…
Rather than answer verbally, Izuku scrunched up his face in concentration, tensing his muscles as he focused. Directly behind him appeared Nana Shimura, looking exactly as Toshinori remembered her. Moving around her summoner, the Seventh Holder of One For All wrapped her successor in a hug. "Of course I did, Little Toshi." For the first time in years, All Might cried, his arms wrapped around the woman he saw as a mother. "I told you that you'd become a great hero. But you proved me wrong. You became the greatest hero."
Unfortunately, the moment was broken several minutes later when Nana suddenly vanished. Toshinori stumbled as the woman he was leaning against vanished while Izuku swayed slightly on the spot. "Sorry, I reached my limit for today."
"I, it's alright Young Midoriya. Thank you. Thank you so much for what you've done for me," the number one hero reassured him. Indeed, some selfish part of him felt that giving Izuku One For All was worth it if only for receiving that moment with his mentor. "I'm sorry, I'm afraid we got sidetracked. You said you could summon the other holders as well?"
Shaking his head, Izuku stood up straighter and whipped out a notebook from… somewhere. "Right, I've been keeping notes. So far I've only summoned three so far. There's Amaze-On er, Nana, who can fly. Daigoro who can create these black tendrils to pierce or bind things. And En, who can produce a smokescreen. I haven't managed to summon any of the others yet. And I have to focus on who I want to summon or the results are random. Though all of them can use One For All so it's not like they are ever not useful, just sometimes one is more ideal than the other and-"
With a fond chuckle, Toshinori cut him off, "You're rambling again, Young Midoriya."
"Oh, sorry. Nana thinks they'll be able to last longer the more of One For All I can use. And they might even be able to travel further away from me too. Right now, my limit is about 103 meters; any further and they fade away."
"Well, Young Midoriya. That's certainly an unusual way of using One For All." Izuku drooped slightly at his words, causing the older man to quickly reassure him, "But it might be for the best! I only ever had the physical enhancement to help me! With your method, you'll have all kinds of Quirks to call upon! Even I can't fly!"
The verdette perked up at his idol's words. "You're right! I can be a great hero even if I can't be just like you!"
"Er, that's flattering, Young Midoriya, but don't you think you should be a great hero like you?" Seeing the boy looking at him in incomprehension, Toshinori thought for a moment. Then it hit him. "Think about it; heroes like Best Jeanist and Hawks don't fight remotely like me, but would anyone deny how effective they are?"
"Oh! That's right! If every hero was the same, then villains would be able to easily adapt to them!"
"Yes, that is definitely what I meant," Toshinori coughed awkwardly. "Though, I'm curious, have you thought of a new name for your Quirk or would you rather continue using Super-power?"
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The remaining days until Izuku's first day at U.A. passed in a blur. Days spent training his Quirk (and it was easier to think of it as his given he outright couldn't use it like All Might), learning what he could about the past holders, and avoiding Kacchan (who had not been happy about earning fourth place). All Might had helped where he could for the previous two. Though while he technically had plenty of time, what with only being able to use One For All for three hours a day, the man was often exhausted once those hours were expended. Hopefully, he listened to Nana's advice to either introduce his civilian form as a TA or scale back his time fighting villains. In her words, teaching wasn't a part time hobby and shouldn't be treated like one.
Now Izuku and the rest of his new classmates stood in their gym uniforms before their teacher, one Shota Aizawa. "Listen up, because I'm only going to say this once. We'll be doing the standard fitness tests: Ball throw, 50m dash, distance running, side jumps, standing long jump, grip test, seated toe touches, and sit ups. You did them in middle school, but here you'll be using your Quirks. On top of that, we'll be doing reflex testing, vertical high jump, striking force, and weightlifting." Much like his appearance, the man's voice sounded like he'd rather be sleeping. "Kirishima!"
A redheaded boy with spiky hair and sharp teeth perked up, "Yes sensei?"
"You scored first on the Entrance Exam." Izuku could hear Kacchan's teeth grinding from where he stood. "What was your ball throw record in middle school?"
Scratching his cheek, Kirishima thought for a moment, "64 meters I think."
Aizawa tossed a softball with a band wrapped around it. "Try it with your Quirk. Feel free to do whatever you want, just don't leave the circle."
Moving to stand within the marked circle, Kirishima pondered the ball for a moment. His Quirk wasn't ideal for such a task but he'd do his best regardless. After all, he had sworn to live a manly life without regrets! Hardening his arm and shoulder blade, the redhead threw the ball as hard as he could. After a few couple seconds, Aizawa's phone stopped ticking. Lifting it up, he read, "180 meters." Kirishima smiled proudly at the result, only for Aizawa to take the wind out of his (and everyone else's) sails. "That's just an example. All of you better give it everything you've got, because last place will be judged as having zero talent and expelled."
Naturally, half the class froze up at such a declaration while the other half exploded in outrage. Ochako's voice stood out among the latter, "But that's not fair!"
"Fair?" Aizawa's tired expression turned into an outright glare. "You think villains care about 'fair'? Do natural disasters care about 'fair'? Life is unfair. And a hero's life even more so. It's our job to combat that unfairness. That's what it means to go Plus Ultra."
Surprising even himself, Izuku spoke up, "We-we aren't going to give up. We all fought tooth and nail to get here so don't expect us to call it quits now!" Almost the entire class felt their confidence rise at his declaration. He was right; they had all worked long and hard to get to U.A., no way they would just give up already.
For his part, Aizawa just quirked an eyebrow. "Is that so? Be ready to put your money where your mouth is."
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And so it went. Izuku alternated between determining which, if any, Holder would be most useful for a given event and gushing over the Quirk usage he saw in action. During the race Izuku summoned Daigoro and utilized Blackwhip to pull himself to the finish line, barely edging out Iida with a time of 2.98 seconds. Though the dwarf boy's comments about tentacles made Izuku feel… unclean.
Of course, Izuku using a Quirk for the first time in front of Kacchan led to its own problems. "DEKU, YOU LYING FUCK!" Like Kacchan blasting towards him with Explosion in a towering rage. Though he flinched, Izuku instinctively reached for his Quirk when suddenly several long strips of cloth wrapped around the temperamental blonde as his explosions suddenly cut out. "Hey, what the fuck is this shit?! Why can't I use my Quirk?!"
"Stop making me use my Quirk, you're giving me dry eye." Aizawa's hair was floating as his eyes glowed red and the scarf around his neck was wrapped taut around Bakugo.
Suddenly, things clicked for Izuku. "Wait, you're the erasure hero, Eraserhead! You can erase people's Quirks with a look."
The now identified underground hero ignored Izuku to address the teen still squirming in his capture weapon, "What do you think you're doing, attacking a classmate outside of a spar?"
Undeterred by his teacher's warning tone, Bakugo growled, "That lying fuck hid his Quirk from me! He's been looking down on me this whole time!"
Though everyone else watched in confusion at Bakugo's words, Aizawa made his feelings on the matter clear, "I don't care what your problem with him is. Attacking another student is grounds for detention or worse. Do it again and you can pack your bags." Once Bakugo, reluctantly, settled down, Aizawa released him. "Now, lets get back to the tests."
The sprints continued. Some did well due to either their quirks or physical training. Others did poorly. A couple standouts included a boy named Todoroki who launched himself with a rapidly growing pillar of ice and a girl named Yaoyorozu who had created rocket-boosted skates.
Once everyone had done their sprint, they continued on to other tests. Grip strength, seated toe touches, and reflex testing, the last of which was done with a Whack-A-Mole machine of all things, also saw Izuku using Blackwhip. While a bird-headed boy named Tokoyami commented on Blackwhip, most of the class didn't pay it much mind. At least, they didn't until the vertical jump when Izuku called on Nana instead. The woman grabbed him mid-jump and floated him up to the ceiling, all while invisible to everyone but him. "Hey, Izukun," She grinned widely at him, "Having fun?"
Once he came down, Izuku was inundated with questions by his classmates. "What was that, Midori?! I thought your Quirk was tentacles!" Mina, a pink skinned girl who could excrete acid, near-shouted. Others were less loud, but no less curious.
Unused to so much attention, Izuku stammered, "W-well, my Quirk is, it's called Summoner and well, would you believe me if I said I was a Joestar?"
Surprisingly, it was the more refined Momo who made the connection first, "You have a Stand?!"
"Er, kinda? It's hard to-"
Izuku's explanation was cut off by their teacher. "How confident you all must be to not pay attention to your competition. You're lucky I hadn't called any of your names while you were busy chatting."
In unison, all of them replied, "Sorry sensei!"
The tests continued. At the standing long jump, Izuku called on Nana again. With a cheeky smile, the Pro Hero carried him bridal style well past the sand pit, causing Izuku to blush brightly and hide his face in his hands. Nana ruffled his hair as she set him down and vanished once more. For the next three tests: endurance running, sit ups, and side jumps, Izuku didn't use his Quirk at all, relying on his own physicality. He did well with the first, coming in behind Iida and Yaoyorozu, both of whom tied for first when Aizawa told them to simply stop so they could finish the tests. For sit ups and side jumps, he managed about average; his training hadn't been really geared towards either exercise. Come the weightlifting, Izuku blew almost the entire class out of the water, lifting 1,200 kilos above his head. Only Shoji, a boy who used his quirk to grow several more arms, had beaten him.
Next was the striking force where they were brought before a large, reinforced punching machine. For once, Aizawa had additional instructions. "While this is technically a punching machine, you don't have to punch it. Do whatever you want, just strike it as hard as possible." What followed was perhaps the most creative answers yet. While some merely punched the machine, others took their teacher's words to heart. Todoroki struck the machine with a pillar of ice with enough force to tilt it backwards. Yaoyorozu created a pneumatic battering ram to strike it. Iida ran at high speeds and drop kicked the machine. And that flamboyant boy Izuku met at the exam, Yuga, shot it with a laser from his navel. Oddly, it registered as a strike rather than simply burning a hole through the device. Quirks were weird.
When it was Izuku's turn, he summoned Nana once more. Some part of him felt guilty for not summoning En or Hikage, whom he had just learned to summon the other day, but neither had Quirks suited to these kinds of tests. Danger Sense might have helped against the Whack-A-Mole, if it actually registered them as dangerous. After stepping in a puddle when first using it, Izuku could safely say it didn't work for things that wouldn't actually hurt him. Nana flew back about half Izuku's max range before soaring forwards, striking the punching machine dead center and obliterating the entire device. Eyes widening in panic, Izuku didn't even register Nana flying back to him as he stammered an apology to Aizawa. An apology Aizawa waved off, "I told you to go Plus Ultra. Besides, we have more of those."
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Finally was the ball throw. Kirishima had already gone so he got to sit out. But each student did their damnedest. From Koda having a bird carry the ball away to Momo firing hers out of a cannon to Uraraka simply removing the gravity from hers and automatically earning the top score. When it was Izuku's turn, he considered using Daigoro, but he wasn't sure how well Blackwhip would work as a sling. So he went with Nana. As it was the last test, Izuku went a little Plus Ultra himself, summoning Nana so she was fully visible. The reactions were instant.
"Holy crap, his Quirk is a milf!" Shouted the diminutive Mineta.
Dark Shadow appeared to be comparing Nana's arms with their own, trying to flex muscles that didn't truly exist. "Hey Fumi, think you can get her workout plan?"
Kyōka merely blushed silently, tapping her earjacks together.
For his part, Izuku passed the ball to Nana, who flew as far as she safely could before throwing it with all her might. A loud BOOM! shook the area as the ball broke the sound barrier, causing everyone to grasp their ears in pain, none more than Kyōka. Aizawa's phone beeped so quickly it almost sounded like one continuous tone before it finally slowed after several seconds and eventually stopped. Silently, he looked at the device, before turning it to face the class: 11,327m.
"Holy crap, over eleven kilometers!" The class shouted.
"Alright, time to show you how you did," Aizawa's tired voice spoke. "It's too much hassle to show each individual score so I'm just going to display everyone's final ranking." Izuku watched as a large holographic screen was emitted from Aizawa's phone. Quickly searching the list, he was surprised to find himself in third place, between Todoroki and Kacchan! Ignoring the explosive teen's grinding teeth, Izuku checked to see who the unfortunate soul was who got last.
"NOOOOO! Now I'll never be popular!" Mineta broke down crying great, big, ugly tears. Despite his occasionally creepy comments, most of the class couldn't help but feel sorry for him.
"By the way, I lied. No one's going home today." As the entire class whipped around to stare at their teacher in shock, he gave a demented looking grin. "It was just a logical ruse to make you give your all!"
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Things were looking bad at the Unforeseen Simulation Joint. Villains had somehow broken in, All Might had used up all his time, and they couldn't get any signals out. About the only good thing so far was that Iida had managed to escape to call for help. An idle part of Izuku's mind that wasn't panicking really hoped Iida tried calling the school once he was outside, rather than running all the way there. The rest of him was trying to figure out how they could help. He, Tsuyu, and Kaminari had just escaped the Flood Zone, which had honestly been rather easy with the electric boy simply frying all the villains in the water. Now they were staring as Aizawa was brutalized by a hulking mass of grotesque muscle the lead villain called Nomu.
Suddenly, the leader, a man with hands all over his body called Shigaraki, sprinted towards them, his hand outstretched. Acting on instinct, Izuku had Daigoro pull his arms apart with Blackwhip, stopping the villain just before he could reach Tsuyu. The massive villain with an exposed brain rushed them as soon as its master was endangered. Daigoro ensnared it as well but the monster barely paused before breaking right through with a flex of its muscles. "Shit!" Daigoro cursed. Creating more tendrils, he grabbed the three students and pulled them away. "Don't think I'm gonna be much help against that thing, Izuku!"
Nodding, once they landed, Izuku dismissed Daigoro and summoned Nana. Without a word, she flew forward, punching the Nomu with all her might. To her shock and Izuku's horror, it didn't budge. It's flesh merely rippled. She tried again, only to achieve the same result. "Tch. Bastard's got some form of damage nullification or shock absorption." Still invisible to all but Izuku, she instead shot forward and punched the lead villain. The man went flying backwards into the fountain, the two hands on his head flew off from the impact and the Nomu quickly rushed after him, trying to protect its master from the unseen attacker. But while the villain climbed out of the fountain and quickly started scrambling, trying to find "Father", Nana stared at the other hand. Pulling off her right glove, the Pro Hero looked at her own hand in growing horror, disbelief, and rage.
"Nana?" Izuku quietly questioned, knowing she'd hear him due to his Quirk's mechanics. He had never seen her like this before. She was always either cheerful or warm or sympathizing. She was like the summer sun. And now, she was cold.
"Izu-kun," she muttered, her voice too calm and controlled to be anything but furious beyond reckoning. "That villain was wearing my hand."
"W-w-what?!" There's no way. He had to have misheard her.
"He was wearing MY FUCKING HAND!" Nana's rage broke and she flew after Shigaraki. He had barely picked up the hand he called Father when a crushing blow to the back of his head slammed him into the ground. "You sick fuck! It wasn't enough to kill my friends! To kill my husband! To kill me! You had to desecrate my corpse as well! What, did you hand out my body parts like fucking party favors?!" The Nomu, unable to see what was attacking Shigaraki, positioned itself above him and swung wildly around, its arms passing right through Nana. In response, Nana grabbed the Nomu by one of its flailing arms and used it to beat Shigaraki into the ground further. The villain barely managed to desperately reach a hand around and make contact with the Nomu, causing its body to disintegrate into nothingness as Nana continued hitting him with it.
With her bludgeon gone, Nana prepared to finish the job with her bare hands when All Might crashed through the door, tackling the warp villain who had been caught off guard. At the same time, Nana faded from view entirely as Izuku collapsed unconscious, spent from the energy she had taken in her rage.
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Omake:
Izuku was in the shower of his new dorm room, "tending to" himself. It wasn't something he'd done often before, what with living with his mother and either having to deal with clean up or answer questions of why he took so long in the bathroom. Though while he now had his own personal bathroom with functionally unlimited hot water, 'Thank you, U.A., for always going Plus Ultra.' he also was seemingly surrounded by beautiful women. From classic beauties like Yaomomo to the exotic such as Mina to surprisingly cute ones like Kyōka, they were everywhere! Not to mention having a busty amazon living in his head. If Mineta wasn't so creepy about it, Izuku would sympathize with him.
So distracted was he by his thoughts, that Izuku didn't notice when he accidentally activated his Quirk. He did, however, notice when the water was no longer hitting his back. And when a warm body pressed against him. A feminine hand covered his own as Nana's voice whispered in his ear, "Ara ara, Izu-kun."
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AN: As some might guess, the QAT was heavily inspired by Critical Overcharge by Primordial Vortex. To quote the Crimson Fucker, "And before you ask, YES! This IS a Jojo reference!" Izuku uses the previous OFA Holders as Stands, they have access to their own Quirks plus OFA (all at the same level) while Izuku can't use the super strength of OFA at all himself (or their quirks, except by having them do so).
While up to anyone who adopts this, I'd personally avoid the whole "Yuga is a traitor" and "One For All ages people with quirks" stuff. While Yuga at least was sympathetic, they're just more of Horikoshi's poor decisions as he tries to speedrun the finale. Hell, the latter was completely unnecessary. If you don't want Izuku to be able to pass one OFA, just state that it had grown too powerful to be passed on and any 10th wielder would just kill themselves trying to use it.
Anywho, unless something drastic changes, this is the final chapter of Q3 ever. Because every other idea I had I either realized sucked, didn't change anything, or someone else is writing it better than I could.