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Chapter Text

The True Potential of One for All!

Chapter 1: Aizawa’s Discovery and Help

Shota Aizawa was reviewing the footage of the U.S.J incident when he spots the fact of Midoriya the problem child of his class leaving Tsuyu and Mineta to carry his “Aizawa’s” body back to the entrance of the U.S.J building, the troubling thing was he could just make out what problem child’s thoughts were in that moment because said young student was muttering under his breath as he rushed back towards the plaza and All Might’s fight.

“No All Might. There are still so many things … So many!! That I need you … to teach me!!” were the things Midoriya was muttering under his breath.

Aizawa watches as his student rush towards All Might and that monster that had absolutely ruined him in their brief encounter, from what he had heard even the Number 1 Hero had struggled in his fight against it. He then saw 3 more of his students joined the fight and even saved All Might, he continued to watch the fight, the thing that caught his attention was something Midoriya was about to say but stopped himself when he realised that others were nearby.

“All Might, you’re bleeding, and I think your times u-” The teen knew of All Might’s time limit, and this would also mean the teen knew of All Might’s injury. Suddenly he remembered a conversation he had with All Might right after the Quirk Apprehension Test, the exact wording the Number 1 Hero had used was “That boy Midoriya… you sense his potential as well, yes?” quickly connecting some dots that he hadn’t thought about until now, the insomniac hero quickly closed the U.S.J footage and pulled up the Entrance Exam as well as the First Heroic’s class of his homeroom class.

He watched Midoriya’s quirk usage and started to note down the similarities between Midoriya and All Might. Aizawa realised what his student was doing wrong but before he could rectify these mistakes, he needed to talk to Nezu and All Might. He instantly sends a message to the principal asking for a meeting with him and All Might, he at once received a response with a confirmation and time in the morning before school started for said meeting.

The Next Day!

Aizawa was sitting next to All Might and opposite Principal Nezu, “Ok, two things. First, I want only the truth and my main question I’ve got what is your connection to Izuku Midoriya? He knows about your time limit, and he came to try and aid you in your fight against that large brutish bird thing.” He asks the two, Toshinori coughed up and spat out some blood in surprise and Nezu started to let out a manic laugh.

“I think we should let him in on the secret Toshinori, Midoriya is his student, and he might be able to help him master it or at least safely utilise One for All.” Nezu says to the Number 1 Pro Hero, Aizawa being observant and situationally aware quickly picked up a keyword and the fact it connects to both his student, Midoriya and the Number 1 Pro Hero; All Might or as he’s known in civilian clothes, Toshinori Yagi.

Toshinori lets out a deep sigh, “Yes I think you’re right.” Toshinori says to the principal before turning his attention towards the sleep deprived, dark haired underground hero and teacher. “Shota, what I am about to tell you is a closely guarded secret. You’ll be the seventh person to know about the truth behind my quirk, I wasn’t born with this quirk. It was passed down to me like a sacred torch, it is the ability to transfer power, it is known as One for All! It’s a crystalline network of power, it has been passed down through the generations of quirks, I am the 8^th user.” Toshinori explains to his fellow hero and teacher.

“That’s a lot of information to take on board but that doesn’t explain….” Aizawa starts to say before something Nezu said occurred to him, “so I’m guessing that you’ve passed this sacred torch onto Midoriya but that still doesn’t explain how Midoriya keeps breaking himself.” Aizawa states, now having more questions than answers.

“Yes you would be correct in guessing that young Midoriya has become the newest wielder of One for All, this quirk has been honed over the years with each user, in fact I’m the longest running holder so young Izuku currently just isn’t strong enough to wield the full power of One for All without breaking himself. Midoriya first used the quirk during the entrance exam, he’ll grow into more power as continues to temper his body by working out.” All Might explains as he wipes some blood from his lip.

“I had a feeling that there was something connecting the two of you, I have a theory on a way for Midoriya to use this ability, could you meet me at Gym Gamma this afternoon?” Aizawa states much to the shock of Toshinori and Nezu before asking the Number 1 Hero. “Yes, I am free this afternoon. I’ll text young Midoriya and ask him to meet me at said gym this afternoon.” All Might says to his fellow teacher and boss as he pulls out his phone.

Later That Afternoon!

Aizawa meets All Might and Midoriya outside of Gym Gamma. “Afternoon Midoriya, All Might. Midoriya could you please explain to me how you are using your quirk.” Aizawa asks his student, he could tell the teenager was feeling anxious. “my quirk is a stockpile of energy that I channel the stockpiled energy into my arm and fist for attacking but I can also use it in my legs for enhanced leaps however I cannot regulate the amount of energy that I channel so its too much for my body to handle and that is what’s breaking my bones.” Izuku explains to his homeroom teacher.

“Ok, that’s what I thought. All Might how do you go from your skinny form to your buff form?” Aizawa says to his student before asking his fellow teacher. “Okay, one important thing needs clarifying firstly before we go any further. Young Midoriya, Aizawa now knows the secret, so you can be open with your quirk. To answer your question Aizawa, I pump the energy of One for All throughout my body, it feels like I’m sucking in my gut whilst flexing.” All Might explains to Izuku before answering Aizawa’s question.

Aizawa was nodding his head. “Ok, you’re overthinking how to use this stockpiled energy. All Might uses it throughout his body to hold and maintain his buff muscular form so that energy is constantly circulating all of the time, he might focus it into his fist for his smashes however you’re only summoning up this energy in order to unleash it all at once. You need to do as All Might is and channel and circulate the energy throughout your body.” Aizawa explains and he could see that his student’s mind was working overtime because of the quiet mumbling he was doing as Midoriya workout a way to channel and use this energy throughout his body.

Izuku stopped mumbling, “I’ve figured it out! As you said I’ve only been using my power when and where I needed it like I’ve been flicking an ON-OFF switch, instead I should have been throwing multiple switches. This would allow the energy to evenly spread throughout my body.” Izuku states as he starts to concentrate, the two heroes watched as the tell-tale red vein like energy patterns appear all over Midoriya’s body before disappearing and being replaced with green lightning.

All Might let’s out a chuckle when he heard Midoriya’s metaphor of a ON-OFF switch but smiled when he saw the power being channelled throughout his students’ body. “Let’s go and see if it’s a viable way of using your quirk, do you think you can even move?” Aizawa asks with a smirk, he then opens the door of Gym Gamma. “I’m not sure, but let’s find out.” Midoriya says confidently with a determined look on his face.

Midoriya drops his concentration so the lightning fades away as he follows his two teachers into a sparsely empty and wide room. “Ok, we’re just going to do some tests to see the limits of this new ability, I’m going to have you redo four of the tests from the Quirk Apprehension test, the first test shall be a 50-metre dash.” Aizawa explains as he gets out his tablet, All Might jogs down a faint track to a 50-metre marker and pulls out a stopwatch.

Izuku once again begins to concentrate as the red energy veins appear and fade away to be replaced with the arcs of dark green lightning or energy and on the go from Aizawa sensei, he took off running and before he knew it he’d passed All Might and found himself at the end of the track. “That was amazing my boy, I clocked your time at 2.54 seconds, is that better than his original time?” All Might says to his successor before calling out to his fellow teacher.

“Yes, that is correct, his original time was 7.02 seconds, and his new time is 4.46 seconds faster, this new technique is faster than Ida’s base speed with his quirk.” Aizawa says as he walks up to the duo and rejoins them, “ok, next up is going to be a grip strength test.” Aizawa says to his student as he hands him a dynamometer. Izuku starts to squeeze on the dynamometer and after a few minutes both the dynamometer and Aizawa’s tablet beep, as Izuku hears the beep coming from the devices he dropped his concentration.

“Ok then you’ve scored a 280.0KG, that is five times stronger than your base strength, I’ve got some thoughts and ideas, but we can talk about those after the two remaining tests.” Aizawa says to his student, the trio then leave Gym Gamma and headed for the long jump sand box. “So far we’ve seen your enhanced speed and grip strength, I want to see how it helps with manoeuvrability in terms of jumping.” Aizawa explained to the student and pro hero.

Izuku once again begins to concentrate as the dark green arcs of lightning or energy surrounded his body and he ran towards the sand box and jumped at the last second, he easily cleared the sand box before landing cleanly almost double the length of the sand box. The two teachers walk over to the young man, Aizawa was looking at his tablet. “That jump was fairly good, I’ve got to say it the jump you did at the entrance exam was a better distance, the sand box is 18 meters long as it’s been modified and that Zero Pointer robot was 3960 meters tall. I’d guess you’re running at roughly 1/20^th of your full power.” Aizawa says honestly as he shows All Might and the pro hero’s chosen successor, the score.

“So, 1/20^th is roughly around 5% of the stored energy of One for All, I’d guess as my body continues to adjust to the power that I’ll be able to utilise higher percentages of the power.” Midoriya says after a few minutes of thinking. “Yes that would be correct, remember what I told you after you received your admissions letter, that we’d made you a suitable vessel that is able to contain the power of One for All as we didn’t have enough time to strengthen that vessel. But the more you continue to hone and temper your control and body the greater percentages of the power you’ll be able to draw upon.” All Might explains to his student as he agrees with what he’d just said.

“Ok, then on to the last test. It is the ball throw; I’d expect it to be a shorter distance than your original distance as your original throw was with your full power even if it were just with a single finger.” Aizawa says the three walk to the pitchers’ circle, he then hands the teenager the specialized soft ball.

Midoriya once again summons forth his new technique as he concentrates on the feeling of 5% of One for All flowing through his body, the teenager takes a pitcher’s stance and throws the ball with all his might. Aizawa’s tablet beeps as the ball lands a distance away from the trio, “that ball registered at 176.3 meters, I was right that distance is a 529 meters difference from your original score. I’d like for you to try this test again but try increasing the amount of power flowing through you.” Aizawa says to his student before instructing him to try something as he hands him another soft ball.

Izuku clenched his teeth as he increases the percentage of One for All that is flowing through him, to him it felt like his bones were vibrating so he slightly lowers the output. If he were to guess he’d reckon it was about 8%, he quickly throws the ball before dropping the technique. Once again Aizawa’s tablet lets out a beep. “So that increase in power increased your distance to 282.1 meters which is a difference of 105.8 meters. What percentage would you say that was when you did the last throw?” Aizawa asks as he shows the Number 1 Pro Hero and his successor.

“I tried for 10% but it felt like my bones were vibrating so I lowered the flow of power, and I’d say it was roughly around the 8% mark.” Izuku says to his teachers, he was out of breath but other than that he seemed ok. “I’m glad you have found a new way to use One for All; I think we should call it a day as we don’t want you to run the risk of quirk exhaustion.” All Might says to his student as Aizawa nods his head in agreement.

“we’ll continue this tomorrow after school; I’m going to call in a favour to get someone to help you hone your hand-to-hand skills both with your quirk and without.” Aizawa says as the three leave the training field. “I’ll do the same, my old mentor is in on the secret and would be able to help you with the mobility side of things.” All Might says shakily as his skeletal form shivers slightly, this confused both Midoriya and Aizawa. Midoriya was wandering about All Might’s former teacher whilst Aizawa was smirking to himself at the sight of the Number 1 Pro Hero, All Might, the symbol of peace shaking in fear.

“May I ask does your mother know the truth about your quirk and the connection it has with All Might?” Aizawa asks as the two teachers and one student arrive at the school gate. “No, she isn’t aware of the truth behind my sudden development of a quirk.” Midoriya admits sheepishly as he scratches the back of his head nervously. “That’s ok but I think we should bring her in on the secret for her own safety and so that she’s not taken by surprise come the sports festival, can you help him with explaining things, All Might?” Aizawa states before asking his fellow teacher.

“Yes, I can be of help with talking to Mrs. Midoriya, in fact I’ll go with the young hero right now. Best strike whilst the iron’s hot as they say, safe travels whilst you’re on patrol Aizawa.” All Might says to his colleague as the insomniac teacher turns around and starts to walk back towards the school. “I’m still to injured for patrols but I’ve got paperwork and research for both class planning and some older cases that still need to be finalised but thank you for the thought and well wishes.” Aizawa calls out as he gives a lazy wave over his shoulder and continues his walk back to the school.

“I’ll drive you home given that I’m now heading to the same place.” All Might says to his pupil and one day successor, before the two walks towards All Might’s pickup truck and the truck leaves the car park and heads off into the city of Musutafa.

Chapter Text

Chapter 2: A Familial Conversation, Nightbolt Training, A Brilliant Meeting Starts.

The fifteen-year-old hero course student and his blonde-haired mentor walk towards a simple pickup truck in the staff car park. “As I said earlier, I am truly impressed with how quickly you developed this new method of using One for All, I am incredibly proud of you.” All Might says as the duo near his pickup truck.

Toshinori leads Izuku to the passenger door of the truck, the student gets in, and the Number One hero then walks around the truck before getting in himself. “Right then young Midoriya, where are we heading?” The skeletal teacher of the foundational Hero Studies class asks once he has turned on the trucks engine and is heading for UA’s exit.

“I live in an apartment block which is about a half an hour walk so we’re probably fifteen minutes’ drive.” Izuku says as All Might drives to his successors home, he was partially excited but also worried with how Midoriya’s mother is going to react.

The beat-up cream coloured, American style pickup pulls up outside the five story Danchi style apartment. The two walk up to the third floor, 2^nd apartment along. “Mom, we have company. Could you please meet us in the living room.” Izuku calls out as he unlocks the door and takes his red shoes off.

“Ok, Izuku dear. I didn’t know that we were expecting any company tonight.” The voice of Inko Midoriya calls out from the kitchen area of the two-bed apartment. Izuku and All Might slowly approach the living room after All Might had taken his yellow boots off, Toshinori smiles to himself when he sees the All Might themed name plaque that was adhered to the teenager’s bedroom.

“We weren’t expecting anyone mom, it’s because I need to tell you something and one of the teachers offered to help me explain it.” Izuku says as he walks into the living room with All Might of all people, the two of them sit next to one another on sofa opposite Inko.

“Good evening, Madame. It is a pleasure to meet you, to start I just want to say your son is an incredible student and one day will be a spectacular hero.” All Might says in his deep, booming, rich baritone voice that echoes with pride and passion through the small apartment.

The way that this legendary hero, the symbol of peace was speaking about her son brought tears to Inko’s eyes. “So Izuku what was it you wanted to tell me? Thank you for telling me that I agree with you All Might, my son is indeed going to be an amazing hero. Who might even surpass you.” Inko says with a smile.

“I wanted to explain to you my quirk and it’s sudden emergence; All Might here offered to help me with this explanation as he’s partially to fault but it’s not a bad thing.” Izuku starts to explain but soon breaks into a storm of muttered words, the way Izuku was muttering and mumbling brought a smile to both Inko and Toshinori’s face.

“Take a deep breath Izuku, it’s ok if you’re nervous with your idol in the room with us. So, what is the exact thing you want to tell me?” Inko says to her son with an amused and fond smile before asking him a question to try and get him to focus on the point of this whole conversation.

“Ok mom, it’s not that I’m nervous because All Might sensei is here but what I’ve got to say to you, as you already know All Might saved me and Kacchan from a villain with a sludge quirk. After that All Might sought me out and said that he flet that I was worthy of inheriting his power.” Izuku starts to explain and he was so focused on his words that he didn’t notice Inko’s face when he mentioned Kacchan but suddenly All Might lets out a wet sounding cough which draws both Midoriya’s attention.

“I think I can explain it better young Midoriya but first Ma’am, please don’t panic.” All Might says after wiping his mouth with the back of his hand as white smoke starts to slowly rise from his bulky form which soon obscures him from view,

“Wait are you sure All Might sensei?” Izuku calls out in a surprised and shocked tone of voice that shocks his mother, who is still staring at the smoke obscured number one pro hero.

“Well, it’s too late now young Midoriya, I didn’t have any time left anyway and I don’t want to strain what time I do have left unless I have to for emergencies or particularly dangerous or tricky villains that the other heroes need my support with.” A softer voice calls out from the slowly dispersing smoke cloud, suddenly thee smoke clears and a skeletal man with blonde hair wearing All Might’s hero costume is revealed however the costume is now extremely baggy on the man.

“Wait who are you? What is going on? Izuku get away from him, he must be a fake or an imposter of some kind. But he’s so thin.” The now worried and panicked mother says to her son as she tries to urge him away from this obvious fake or imposter.

“No, it’s ok mom. This is part of the explanation of my quirk and its sudden appearance.” Izuku says calmly from his place sitting next to the skeletal man with the floppy blonde hair that is swimming in the now oversized All Might hero costume.

“What your son is saying is true. I am indeed All Might, you see five years ago I received a near fatal injury.” The man identifying himself as All Might starts to explain as he shrug off the upper half of the costume and lifts his under shirt to reveal a circular shaped scar with zigzagging lines around his stomach and lung.

The number one hero lets out a chuckle, “oh apologies, it’s just you said the same thing your son did when he first saw me in this form.” All Might says as he puts his shirt back down and pulls the upper half of his costume back on.

“Oh my, are you sure that you’re ok? Can I get you anything?” the worried housewife asks as she stands up and starts to walk towards the kitchen area of the small two bed apartment.

“No, it’s ok and yes, I am sure that I’m ok. Please come back here and sit down, we need to continue our conversation as we still have much to discuss.” The softer spoken but still baritone All Might calls out from his place on one of the sofas.

“Really?” Inko asks as she walks back to the now empty couch that she had only just vacated. “So, which of you two are going to speak now? And fill me in as to what is going on here.” She asks once she’s sat back down.

“Yes, I am sure that I’m ok. I think that I shall be the one talking as I actually have more to explain about the quirk that even you don’t know young Midoriya!” the blonde haired, emaciated skeletal man says softly not only addressing he green haired woman but her son at the same time.

“Woah, what are you saying All Might? What don’t I know about One for All?” Izuku asks hurriedly as he turns to look at his mentor with questions and curiosity shining in his green eyes.

“You see back at the dawn of quirks emerging, the norms of what it meant to be human suddenly collapsed, and with that laws became meaningless. Societal progression halted, it was catastrophic.” All might starts to explain the origins of All for One to the Midoriya’s.

“Some important guy over in America once said. Without the advent of the extraordinary, humanity would be enjoying interstellar travel right now.” Izuku interrupts by blurting out, this brought a smile to Inko’s face and made All Might chuckle.

“Don’t interrupt him, Izuku.” Inko says softly to her son.

“No, no it’s ok ma’am. Yes, that is correct young Midoriya. And in that age of confusion and disorder, one man took the initiative and brought people together. In fact, you may have heard about this. He would steal quirks from other people… and with his overwhelming power spread the influence of his organisation. There’s a quirk called All for One” Having said this All Might stopped briefly to take a deep breath.

“He was responsible for manipulating so many into committing wicked acts, which was his intent. Before long he had taken over Japan- a true lord of evil. Go ahead young Midoriya.” All Might continues to speak but stops when he notices Izuku about to speak.

“I’ve seen rumours about this on the internet, but I thought it was all made up… there’s nothing in the textbooks about him.” Izuku says as his mind starts to connect dots and put things together.

“Yes, I too have seen those rumours.” Inko admits to the pro hero.

“The textbooks don’t tell you about what the yakuza are up to either, do they? When a person has power, they instinctively seek a way to use it.” All Might says and then asks his young student.

“I think I can see how this is going to be connected to One for All.” Izuku says as his theory starts to solidify in his mind.

“I mentioned that All for One could grant quirks too. With that ability, he could instil trust in others… or at least get them to submit. However, the load was too much to bear for those who received it. Many would end up becoming mere puppets, unable even to speak.

“I’m sorry sir, but has this got to do with my son? Are you saying that he’s had a dealing with this man?” Inko asks the pro hero, he face showing clear confusion as how this history lesson would have to do with her son’s quirk and its sudden emergence.

Of course, not Ma’am. Your son most definitely hasn’t had a dealing with this man, that I can guarantee you. This history is the origins of your son’s quirk and mine!” All Might says boldly in his deeper voice as he temporarily bulks back up once again only to revert back the emaciated skeletal form.

“The origin of both of your quirks?” Inko questions, a pit of worry forming on her stomach at what possibilities her son has gotten wrapped up in.

“Just like the creature at the USJ?” Izuku suddenly thinks as he realises what All Might is potentially getting at.

“On the other hand, there was once case... where his granting of a quirk resulted in a mutation, a blending. The man has a quirkless younger brother, said brother was fragile and small but he had a strong sense of justice. And the deeds of his brother hurt him, so he opposed the tyrant that his big brother had become, we don’t know if it was out of kindness or it was an effort to make his brother to submit to him. He forced a Power Stockpile quirk upon his brother, the thing is the younger brother turned out not to be quirkless after all he had a totally useless ability, it enabled the brother to pass his own quirk on to others.” All Might explains and both Midoriya’s eyes widen in recognition of this power.

“Wait are you telling me that my son has this power that the younger brother once had? If this was back at the dawn of the quirk era, then I might believe it but that was roughly 150 to 200 years ago.” Inko says in shock and disbelief as she looks at the shrivelled form of the number One pro hero of Japan.

“Yes, I am saying that, but no your son didn’t get the quirk from him, young Izuku is the ninth wielder of this quirk, and he inherited it from me. I’m the eighth wielder and much like your son I inherited the quirk from my mentor. I shall be going; there’s a bit more to explain but what I have just said is a lot of information to take on board.” All Might says as he lets out another wet cough and stands up.

“Ok All Might thank you for looking out for my son on ways that I couldn’t. Would it be possible for me to contact you if I have further questions?” Inko asks as she too stands up and the two adults walk out the room, Izuku hears the front door open and close before his mother walks back in and sits next to him and pulls him into a hug.

The Next Day!

Izuku is standing outside of gym Gamma in his PE uniform as he waits for All Might and Aizawa to show up for today’s training session, as he’s waiting he smiles to himself a she recalls his mom saying that she’s proud of him and looks forward to seeing him shine as a hero.

“Ah you’re here early Midoriya, I like to see it.”  Voice calls out and this snaps Izuku out of his thought, the young verdant haired teen turns around to see the bandages form of his home room teacher limp walk towards him using crutches to aid him in his travels, a Dark-skinned woman was walking beside him. She was wearing a black armoured leotard, thigh-high boots and wrist guards.

“Oh, is this the student that you want me to help hone his combat and manoeuvrability at high speeds?” the woman asks in a teasing manner once the two were next to Izuku.

“Yes, that is correct, this is him. Midoriya I’d like to introduce you to the Lightning Cat hero: Nightbolt. She’s an underground hero like me. I called in two favours to help with your training, she’s here for today only to help with your speed, manoeuvrability, and precision.” Aizawa explains as he uses his tablet to unlock the door to gym Gamma.

“Right then pipsqueak, let’s run through a game of tag. This is so I can assess your speed and see how I can help you develop it into a reliable technique.” The now named Nightbolt says as a teasing smirk appears on her face as she starts to generate a cloak of golden lightning, Izuku follows suit and Simmons forth his new technique of Full Cowling.

With a gesture from Aizawa the two energy clad heroes took off at a run, Nightbolt showing why she’s known for her unique movement techniques and pure speed. Izuku was finding it hard to catch up to her using only 5% of One for All, he even pushed the percentage to 8 but even that wasn't enough to catch up to her, the sound of a bell rings throughout the empty gym. “Ok then pipsqueak, you’ve got some good speed there but you need to refine that technique to give you burst as well as pure speed, you see I was using a mixture of my quirk enhanced muscular power for my speed whilst also using a burst of my bio-electricity to generate a discrete microscopic pulses that generate a boost of energy under my foot.” Nightbolt explains as she comes to a stop next to the teenager.

“Ok then, I think you’ve got a perfect style to create a version of my own Shunpo technique. Eraser, how long until All Might brings his other teacher here?” she says as she stretches before turning to the bandaged underground hero and asking him a question. “you’ve got an hour, so go for it.” Aizawa calls out from his place near the doorway.

“Right then kid, come on over here. The first thing we’re going to need to do is teach you the correct stance as it helps with the initial step off at a high speed, it needs to be centred and focused its like you’re slowly tuning an engine.” Nightbolt explains as she demonstrates the stance that Izuku needs to take and Izuku mirrors her and repeats the process of taking the stance a few times over so that it comes more naturally and that he doesn’t need to keep thinking about it. “Right then, you’ve got the stance down now we need you to work on you feeling and knowing the correct timing to let off a burst or pulse of your quirk to add speed to your step whilst you also maintain the shroud that you use already.” Nightbolt continued to describe how she developed the technique that she uses, she demonstrates at a slower speed to give the emerald eyed youth time to watch and analyse her method of propulsion.

“It’s your turn now pipsqueak, show me what you’ve got! Yo, Aizawa can you time this.?” Nightbolt says to her temporary student before shouting out to her sometimes colleague, who starts to walk over with his tablet. Izuku summons forth his full cowling and takes his new stance before starting to run and letting of a pulse of All for One energy just after he’d started running and his momentary speed felt like it almost doubled, the young hero in training soon made it to the other side of the gym.

“That was 2.44 seconds, this technique has helped you shave of 10 whole seconds and the more you practice the better it might be.” Aizawa calls out to his student, “Nightbolt you’ve got 15 minutes remaining so make it count.” Aizawa says to the dark skinned, dark purple haired underground hero.

For the next fifteen minutes the heroine had Izuku run through the use of this technique and showed him how she uses it to close the gap between herself and an opponent.

The doors to gym Gamma slide open as All Might enters closely followed by an elderly gentleman who is extremely short and scrawny looking, but he carries himself like a season veteran and had an aura of seriousness similar to Aizawa. “Right then I’ll be seeing you kid, it’s been a blast. Till next time.” Night Panther says as she charges up her bioelectrical aura and with a crack of thunder sprinted away. Once she was fully gone All Might sighs as he erupts with smoke as he reverts back into his skinny form.

The ground starts to rumble and shake as pillars and columns at different angles appear throughout the gym, “I asked Cementoss to rearrange the gym for the afternoon so that my old mentor could help you hone your instincts and possibly help improve your control over this Full Cowling technique you developed yesterday.” All Might explains, only to temporarily bulk up as the old man drops his cane and launches himself at immense speeds into All Might’s chest, knocking the wind out of the pro. This makes Aizawa chuckle and understand why the pro shivered when he mentioned the man yesterday.

“Alright my name’s Gran Torino. I’d like for you to fire of a smash at whatever the max output you can handle.” The now identified Gran Torino says as he picks up his walking stick and moves closer to Izuku, who has wreathed himself in his Full Cowling and throws a punch at a nearby stone pillar, the punch tears a deep hole cleanly into the column of cement. “Interesting what percentage of One for All was that?” Gran Torino asks the young man.

“That was roughly 8% of my power as that is all my body can currently handle and control.” Izuku says as the verdant energy crackles around him as he waits to see what All Might’s mentor wanted him to do next.

“Ok then let’s have a sparring match with you holding a steady 7% of your power, this will help you maintain the focus needed to control the power and give you some battle experience at speed,” Gran Torino says as he drops the cane once again and starts to bounce off all the cement columns and even the ceiling of gym Gamma, Izuku takes off running towards Gran Torino as he lets lose a pulse of One for All and increases his speed momentarily however the growl of the energy being released warned Gran Torino of the imminent danger. Gran Toriono then slams both of his feet into Izuku completely knocking the wind out of the young man, this causes him to drop his concentration on Full Cowling.

Izuku ducks behind a pillar of cement and begins to focus on resummoning his Full Cowling whilst also beginning to analyse Gran Torino’s movements and pattern of attack, the moment he had his technique active once more, the hero in training leaps into action, bounding towards a pillar and running straight up in before launching himself off it towards his adversary only to utilise a faint and soar right over the old man and landing in a crouch on another pillar and using a silent version of his mobility boost propels himself down the pillar and back to the ground directly underneath the retired hero. The verdant eyed teen jumps straight in the air and unleashes a straight forward punch as he calls out “Smash” a few pressurised air currents fly around his fist causing a small cut to appear on the older man’s cheek only for the teens momentum to continue forward and slamming face first into another pillar of cement, the aged former professional hero had used his air jet to dodge the smash at the last second.

“That’s the first time in a while that I have had to seriously dodge an attack.” Gran Toriono thinks to himself.

The duo train together for a further hour before Aizawa calls out that it’s getting late and Izuku needs to be heading home. “I’ll be here for remainder of the week; over the next two day we shall continue perfecting and fully mastering these new techniques of yours” Gran Torino says as the quartet exit gym Gamma.

The next two days fly by as Izuku continuous to practice both his full cowling and the new technique that he’d developed inspired by Nightbolt’s own technique that he was calling Full Cowling: thunder step.

As All Might and Izuku are walking out of Gym Gamma on the Friday, “Young Midoriya, I was hoping you’d join me on a video call tomorrow afternoon with an old friend of mine, I was going to call in a favour and get him to design and built our new improved hero suit especially now that you’ve got a handle on controlling One for All.” All Might says as the two get into Toshinori’s truck.

“Sure thing All Might, can I ask who it is we’re going to be talking to?” Izuku asks as the two drive away from UA.

“It is my old friend Dave from America; he designed and made every one of my hero costumes.” All Might says to his young student and chuckles when he notices how his student’s eyes have widened with recognition of the name Dave.

“Oh, wow I’m going to get to meet and talk to the David Shield.” Izuku says excitedly.

The Next Day in the Afternoon.

Izuku was walking into a staff room at UA to meet with All Might. “Young Midoriya, I’m going to tell you my real name, it is Toshinori Yagi. The reason I’m telling you this is because Dave may call me Toshi, so I don’t want you panicking or freaking out, ok?” Toshinori says to his young student.

“Sure, thing All Might, let’s get this call on the way as it’s the afternoon in I-island.” Izuku says as he sits down next to All Might, who has set up a laptop in front of the two and has entered a video conference with an American number.

“Hello Toshi, Uncle Might!” comes two voices over the video call as it connects showing a man with honey brown hair and a girl with red glasses and long blonde hair.