At the young age of 4 Izuku Midoriya discovered the world was not fair, quirkless, bullied, and kicked into the dirt more times than he could count. He was Deku the worthless quirkless loser, nobody respected him and his best friend had turned into the worst of his bullies. To say he had a positive outlook on life would've been a lie to say the least.
What had caused all of this? A diagnosis from a fraud of a doctor, the man ruined Izuku's dream, and what, because his toe lacked a second joint? In this world full of mutants and other biological changes? Who's to say that his quirk wasn't having an altered toe joint, but no, because this sham just dismissed Izuku and never bothered to fully test him the boy was subjected to hell on earth. Six years, SIX YEARS, Izuku had to live under the thumb of Bakugo Katsuki, his biggest tormentor but really just one of many.
Then again at the age of 10 Izuku re learned this lesson, after all he did indeed have a quirk, one he had never quite expected to have. After all what's stronger than being able to give and take quirks in a world that was based off of them. Izuku Midoriya's story began after standing up to his "friend" for the first time. The boy in question had turned into what could only be described as a villain. He flaunted his power over others by beating them into the ground with his quirk, explosion.
One day after being shoved back by his childhood tormentor Izuku felt it first then saw it, a string coming from bakugo he could sense it and he felt compelled to pull, the very essence of body screaming to take the thing and rip it from Bakugo and so he did. The weird thing was that Bakugo stopped after Izuku had ripped the thing from him, he was sitting still just staring at his hands. Izuku was confused to say the least, he had never seen this behavior from Bakugo before, breaking him from his reverie his ex-friend screamed.
"DEKU, WHAT DID YOU DO?" Bakugo roared before starting to stomp towards the boy.
Izuku decided now was the time to flee so he turned and ran, he didn't stop until he was all the way back home.
It wasn't until Izuku had reached the door to stop and consider what he'd done. Izuku could feel the string inside of him and as if on instinct his body told him to pull it so he did and once he had tiny sparks had started to appear in his hands. So that's what he did Izuku realized. He had stolen Bakugo's quirk, his quirk lets him steal quirks. The irony of the situation was not lost on the boy he was no longer a worthless weak Deku, he was strong and Bakugo was the Deku now. He finally brought himself out of his thoughts and opened the door, to see his mother in the kitchen cooking.
Calling out to her he said "Mom, Mom, look at my quirk". Izuku created tiny sparks from his hands while he said that showing her his new quirk.
The face on the woman went from joy to confusion to shock at the sight. "Izuku isn't that Katsuki's quirk? Or do you just happen to have the same one dear?" Inko said quite surprised as the odds of the latter seemed astronomically low since neither her nor her husband had a quirk even remotely similar to that.
"That's not my real quirk Mom, my real quirk lets me steal quirks. I took Bakugo's so he couldn't bully people anymore." Izuku explained.
The house phone began to ring after her son finished telling her about his quirk, but she was sure she knew who was calling right now. "Izuku we need to talk about this, stealing from others is wrong even if they were being bullies." She sighed grabbing the phone noticing the name on caller id. "Hey Mistuki, I already know what your calling about, Izuku just told me about what happened."
"Yeah your son stole my brat's quirk, Inko I don't think I need to say how scary of a quirk your son has. Katsuki has been crying ever since he got home, do you know if Midoriya can return quirks or is it permanent? If he can, can you make him give it back to Katsuki please." Mitsuki stated in a manner that sounded more defeated than actually angry.
"Yeah I was just about to talk to him about it. I'll figure out how exactly Izuku's quirk works before you get over here." Inko sighed again realizing this was going to be a long night.
"Thanks Inko we'll be right over." Mistuki said as she hung up
"Izuku please tell me everything that happened and what you know about your quirk. We need to figure out if you can give quirks back before the Bakugos get here." Inko explained to her child.
Izuku paused before responding. "Uh I can sense strings? I just pulled on it and I took it from Bakugo, I have to physically touch someone, I think. As for giving it back I have no idea if I can Momma but I don't want to give it back to him. He's just going to start abusing people with it again. He's a bully Mom, bullies shouldn't have powers if they are going to misuse them." Midoriya explained to his mother.
"Izuku you aren't the law you don't get to decide who does and doesn't get to have quirks. Please don't fight me on this." The woman was done with this conversation
At first Izuku didn't want to give it back but the more he thought about the more he realized that she was right. "Alright Mom, I'll give it back but I want to set some rules before I do. I want him to stop being a bully at the very least." Izuku finally relented.
Thirty minutes passed before there was a knock at the door. Assuming it to be the Bakugos Inko went to the door before opening it, she was greeted with the sight of Masaru looking at Izuku with fear, Mitsuki looking bored more than anything but their son Katsuki? He just looked dead, he must be crushed without a quirk she realized.
"I'm sorry we had to meet like this but please come in. I have tea for all of you if you want some." Inko said while ushering them in and onto the couch, Masaru was notably giving Izuku a wide berth Inko noticed.
Mitsuki took a sip of her tea before speaking. "While I do wish we were meeting under different circumstances we do need to take care of this Inko. Izuku can you tell me what exactly happened earlier today?"
Izuku began twirling his thumbs together. "Um well Bakugo was threatening me with his quirk and then when he shoved me I saw a string coming from Bakugo so I pulled on it and suddenly I had his quirk. That's all that happened really." Izuku put his head down after.
Mitsuki looked at her son before continuing. "Did you attack Izuku Katsuki?"
"Yeah I attacked that stupid Deku he thought he could be a hero without a quirk, it was for his own good. Now he has that evil villain's quirk that only lets him take from others." Bakugo cringed from hearing the boy say his name earlier and not Kacchan for some reason that hurt him inside but then the fire returned. "YOU HEAR THAT DEKU YOUR A FUCKING VILLAIN YOU HEAR ME? YOU'RE A FUCKING FREAK WITH A FREAK'S QUIRK!"
Everyone in the room froze from the sheer venom dripping from the boy's speech, the language excluded Mitsuki was speechless hearing her son talk like that, she hit him on the head. "Katsuki never speak like that again and your quirk isn't evil Izuku, what happened sounds like it was an accident. Can you try giving it back please?"
Izuku was still trying to collapse in on himself to get away from Bakugo but he heard his name spoken so he knew he couldn't avoid this conversation. "I can try but I don't want to get exploded anymore can you promise to stop using it on me Bakugo?"
Mitsuki looked at her son after a large amount of time passed without him speaking. "Well Katsuki?"
"No fucking way I'm going to put this monster down before he has the chance to steal even more quirks." Bakugo was glaring daggers into Izuku.
"Katsuki!" She slapped her son again. "I will NOT tolerate you threatening to kill Izuku. What the hell is wrong with you."
Bakugo was rubbing his face from the slap. "Look what his fucking quirk can do, he could take the quirk of everyone in here by just touching them!"
Izuku started crying after hearing what his ex-friend said, he knew they were never going to be friends again but he wanted to kill me. "I d-d-don't want to give it back if he's going to do t-that." Izuku was rubbing his eyes.
Inko just looked between the two children. Before steeling her gaze and looking at her friend's ex son. "Katsuki if you touch my child, I swear nothing will stop me from getting you."
The gaze horrified the boy he'd never seen Inko look like that.
Masaru finally decided to step in. "Alright everyone let's please calm down. We're getting too heated here. Let's take a minute and calm down."
A tense silence passed before Mitsuki spoke. "Alright it's clear things have become strained between the two of you but Katsuki you will promise to stop hurting Izuku, I don't care about his quirk do I make myself clear?"
Bakugo looked to the side. "Fine old hag. Deku give me my fucking quirk back I won't use it on you."
Izuku shakily held his hand out but as he did a thought occurred to him. Something so wrong, so out of character he can't believe he was thinking it. This was his quirk now and there was no way Bakugo was going to listen to his mother. Plus his Mother had a point they had no way of knowing if Izuku could even give quirks back, though he was pretty certain that he could. On top of that Bakugo just threatened to murder him if he got his quirk back, I'm not taking that risk If I don't have too. Besides this was payback for the years of torment Bakugo inflicted on Izuku. "Um I don't know if I can even give it back but I can try, t-take my hand B-bakugo." They sat like this for ten minutes while Izuku pretended to 'give' his quirk back. On the other hand Izuku definitely knew he could return quirks now. After he initiated physical contact with Bakugo he felt the ability to push the string back into the boy if he wanted too.
"I'm so sorry" Izuku stammered out "I don't think I can do it." Katsuki just deflated at those words Izuku had never seen the boy look so pale but after what he did and said today alone he felt he more than deserved it. Hopefully with some time without a quirk and he'll learn to be a better person although Izuku did feel a little guilty about it but he figured he could just hold onto it for a few weeks before giving it back.
It was Mitsukis turn to chime in "Alright well it seems we won't be getting anywhere today but please keep trying to find a way to give his quirk back Izuku. You know it was everything to Katsuki and without it, well just look at him." Izuku cringed after seeing the look on bakugos face, maybe he should just give it back now. No, this will be a good learning experience for him Izuku finally decided, it's definitely not because I want to keep it or anything he told himself.
The Bakugos stood to leave but Katsuki was just staring at the floor after a little more time passed and his parents realized he was in shock, Masaru grabbed his hand and led Katsuki from the house. Mitsuki just said a sad goodbye to Inko before they left.
Inko looked at her child in various levels of intrigue and fear realizing just what her son was capable of. "Izuku you must keep your quirk a secret honey, imagine what people will think of you if they found out you can permanently rob them of their quirk by simply touching them. Your quirk is extraordinary Izuku but it's also incredibly horrifying and when dealing with things like that it's best to handle it with a level of caution alright dear? I will love you regardless but either way it's time for bed Izuku."
All Izuku did was say I love you in kind and walk off to bed but little did they know that this wouldn't be kept secret for very long.
The next morning
As Izuku made it to the school next morning but for some reason everyone was giving him hushed looks and whispering behind his back. He was used to bullying and being made fun of but this was very different from the usual. Confused he walked over to one of his classmates in order to ask them what was going on. The person in question just looked at Izuku in fear and screamed running away begging him to not steal his quirk. Oh Bakugo told everyone about my quirk I guess, well that's fun.
That being said getting left alone is probably better than getting bullied at least. Other than that though he realized his Mother was right. Izuku had a villainous quirk and if he were being honest with himself he had been using it like a villain, then again Bakugo literally threatened to kill me if I gave him his quirk back so maybe I'm doing the right thing? He was broken from his thoughts when the intercom blared to life.
"Izuku Midoriya to the Principal's Office. Izuku Midoriya to the Principal's Office." The line cut after that announcement.
Izuku just sighed in defeat and started walking towards the Principal's office
Once he reached the office of the Principal the secretary ushered him into the room of the principals almost immediately. Upon looking into the room he saw two chairs sitting in front of the Principal's desk, one empty, the other occupied by a familiar spiky blonde haired child with a shit eating grin on his face. Principal Nakihara on the other hand looked livid. "Midoriya it has come to my attention that an incident occured at the playground yesterday. Your quirk came in, that's good but then you used it to somehow steal Bakugo's quirk? Return his quirk at once Midoriya!" The man slammed his hands on the desk when said that last part. If Izuku were being honest, he fucking hated this man. He's covered Bakugo's abuses for the entirety of the time he was here just because he was their 'star' pupil. Hell the man often blamed Izuku for being the one to start the fight if Bakugo got caught in the act. In his mind this man was worse than Bakugo, he actively encouraged abuse in his school and Izuku hated it.
However being wise enough to not voice his opinion, Izuku just sighed before speaking. "Sir, I already had this talk with the Bakugos. I don't know if I can return a quirk once I take it and even if I could I have no idea how to do that."
The principal slammed his hands on the desk again. "Then find a way Midoriya! If his quirk isn't returned within 10 minutes I will be calling the police, you have robbed the future of one of our best and brightest, and if you cannot fix it then I swear to god I will bring the vengeance of the law down upon you."
Izuku called it of course, had this man ever once went to bat for him? No, he just scuffed everything that Bakugo did under the rug and now that I made Bakugo the Deku, he's lashing out at me for it. Izuku had 2 choices now, give it back and they realize he was lying or double down and have the police called. Since there was no way Izuku could get in trouble for this Izuku went with the second option. He was literally quirkless until yesterday and honestly today had just proven his point even further. Bakugo Katsuki does not deserve having a quirk, he's a violent bully that manipulates the people around him and uses his power to stand over other them while he kicks them into the dirt. He's a villain nothing more, nothing less and now that his favourite toy was taken he's throwing a temper tantrum just because he can.
Izuku just sighed again. "I can try again Sir but I really have no idea if I can do this." Izuku then went and faked another attempt at giving the boys quirk back and after 10 minutes of him 'trying' true to his word the principal called the police. Izuku wasn't sure what the principal thought this was going to accomplish though, Izuku is 10 years old for crying out loud.
So there Izuku sat in an office for around an hour, trapped between two people he really would rather not be trapped between. When the door finally opened Izuku cheered silently.
It revealed two people, one absolutely tall skeleton of a man with blonde hair and blue eyes wearing a really tacky yellow suit. The other was a much more normal looking man with black hair and a detective's badge, it was a strange pairing to say the least.
The detective spoke first. "Hello my name is Detective Naomasa Tskauchi." He said as he flashed his badge, "We came because of the incident of a child stealing another child's quirk. Which of these two is the one who took the quirk?" The principal responded by pointing at Izuku. "May we borrow your office Principal Nakihara? We would like to get the boy's statement in private, if that's alright with you." The principal stood ushering himself and Bakugo out of the room.
The detective sat down in the chair opposite Izuku and began asking the boy questions. "So Midoriya, is it true that you took that boys quirk?"
"Yes, it is but it wasn't on purpose I swear, in fact I was considered quirkless until yesterday." Izuku explained to the man.
All of that pinged as a truth which greatly relieved the detective, at least the boy didn't do this on purpose and he only has his hands on one extra quirk. That being said this child either possesses a quirk similar to All for One or All for One is involved in this somehow. Both options didn't make the man happy. "Alright that's fine then, can you give the quirk back Midoriya?"
"I don't know If I can, I've only had the quirk for a day, not even actually." The boy lied to the police officer.
Well that's not good Tsukauchi realized. "Midoriya do you want to take a guess at what my quirk called lie detector does?" The man leveled a gaze at the boy.
Oh Izuku was fucked.
Satisfied by the look on the boy's face Tsukauchi continued. "Things are going to get serious if you don't tell me why you won't return the boy's quirk Midoriya."
"I'm sorry for lying but please believe me I had good intentions in not giving it back." Izuku stammered out.
Strangely enough that wasn't a lie the boy genuinely believed he was doing the right thing by not giving it back and that somehow worried Tsukauchi more than if it had been a lie, was the boy delusional or something?
"The person I took it from was a bully, he used his explosion quirk to hurt people. I was one of his main victims, I just wanted to keep him from hurting people. I want to be a hero after all, plus I figured I would return it in a few weeks at the most. Just enough time to make him get used to being quirkless like the person he used to beat daily. Also I don't know if this has anything to do with it but I feel kind of possessive of the quirk, it's like I hunger for it. I've never felt anything like that before."
By the end of it the Detective was both equal parts relieved and appalled, at least this boy wanted to be a hero and not use his quirk to become the next dark lord or something. "Izuku while every single thing you just said was true and I applaud your bravery in standing up to a bully. This compulsion can you fight it?" The man asked the scared child in front of him.
Izuku nodded. "Yes but it's kind of hard. Like when you told me what your quirk does part of me wanted to take it. I'm kind of scared of this feeling if i'm being honest."
For the first time in the entire conversation the skeleton man spoke "My name is Yagi Toshinori young Midoriya, I would like to ask you a few questions. The main one being why do you want to be a hero?"
Izuku paused as he thought for a bit."I really just want to save people with a smile like All Might, he's my favorite hero."
Yagi Toshinori winced as his name was brought up and he looked over at Tsukauchi to see a thumbs up indicating that the boy did not lie to him.
"That is commendable young Midoriya but what you did was akin to vigilantism the way you described it. You took the law into your own hands to deal with a threat and decided that the other boy should not have a quirk. Young Midoriya you are not the law, you are not even an adult yet, you are a 10 year old child with a very very strong quirk." The man scolded the child.
"I know but he threatened to kill me if I gave it back, he called a m-monster that needed to be put down. I was scared." Izuku shook in fear.
Both men exchanged a look, Tsukauchi confirmed it to be true. Toshinori had a face of sheer rage, the bullying was that bad? "I swear I will look into this Young Midoriya but you will have to return the quirk I promise that other boy won't hurt you anymore. That being said as the incident was the result of an accident there will be no formal charges pressed, at least for you. Please do not let this incident occur again as next time we can't explain it away as a mere accident." Toshinori leveled the boy with a gaze that made it clear repeat offenses would not end in a similar manner.
Izuku let out a breath he didn't know he was holding, now that he was out of immediate danger his curiosity returned. "Um sir I can kind of see quirks now, they look like strings with unique characteristics that I can pull on to take them, why do you have 7 quirks? Also why do they look so weird there all wispy and ghosty, kind of like they aren't even really there." The boy asked the skeleton.
To which Toshinori coughed blood in sheer surprise. He gave a look to Tsukauchi and decided that this boy needed to now since he will likely be targeted by Him in the future because of his quirk. All Might was pretty certain that he had killed the bastard but they were never able to find the body to confirm his death. Hopefully it was just one of his followers dragging off the body to bury it but deep down part of him knows that it wasn't true.
"Sir are you okay?! You just coughed blood!" Izuku grabbed a napkin from the desk and panically handed it to the man.
"It is simply my old injury flaring up do not worry yourself about it. Alright young Midoriya as there is a high chance that you will be involved in this in the future I am going to tell you something, you must swear not to reveal anything I am about to say, do you understand?" The boy gulped in response and then nodded.
Toshinori buffed up appearing in his All Might form. "Young Midoriya, my quirk is called One for All, it is a sacred torch passed down through the generations, and I am it's eighth user. The quirk is 2 different quirks combined although it appears they're may be remnants of the others in the quirk based off of what you just said. Any way the first is the quirk to stockpile power which is why One for all gets stronger with each generation and the second is the ability to pass itself onto another person. You're probably wondering why I'm telling you all this my boy? Well it is because those two quirks were combined by another's quirk, one who can give and take quirks, sound familiar? That man is the world's greatest evil. He's always hidden himself in the shadows manipulating actions from the shadows and he has been around for over 200 years now. You get it right? The ability to just take quirks as one pleases, a quirk to stop aging perhaps? This man has a love for power and uses his abilities to take and control, although I finally defeated him one year prior which is where I got this injury of mine my boy. I'm sure you understand why we were so worried when we first came in here." Finishing his story All might deflated back into his true form.
Izuku couldn't believe his eyes, he had been talking to All Might this whole time and they were just trying to make sure they didn't have another lord of darkness on their hands, it finally clicked for him just how dangerous his quirk was. "All Might there's a question I need to ask, can I be a hero with this quirk? A villains quirk?"
All Might just laughed. "Boy no quirk is villainous, quirks are simply tools to be used and with yours i'd say you could become one of the best heroes of all time using it."
His idol believed in him? Izuku was openly weeping now and he had no intentions of hiding it, finally someone believed in him.
"Young Midoriya this was an enlightening conversation but what if I said I had a proposition for you? How would you like to be trained by me? And as it so happens I have the perfect way for you to use your quirk completely legally and it would be beneficial to the police, provided you follow through and actually return young Bakugo's quirk." After hearing that Izuku couldn't contain himself he ran out the door slapped Bakugo's hand and ran back into the room screaming "YES" at the top of his lungs. This was the origin of the pro hero All for None.