Izuku Midoriya always felt he was different from the other children. He didn't look like his mother or father, he was tall with a strikingly powerful jaw line, his bright blue eyes and dark black hair looked so different from his mother's green hair and eyes and his father's red hair and yellow eyes. For many years he had simply just chalked it up to him having some form of mutation quirk as there were many kids who looked different from their parents, except when he was four. His mother had reluctantly taken him to see a doctor to find out what his quirk was.
He'd been hoping for something really cool, maybe telekinesis like his mom or breathing fire like his dad, but his dreams were shattered when the doctor had told him in no uncertain terms that he was quirkless, his mother didn't look too surprised at that and that should have given him a bigger indication that she knew something that he didn't.
It pretty much ruined his friendships at school once people found out about his lack of a quirk, the bullying spearheaded by his former best friend was the most shocking because he always thought that Kacchan was a bit rough but underneath it all a sweet boy who wanted to help others as a hero. But all the ego stroking from everyone telling him his quirk was so strong, it changed his perception and what he prioritized. When Izuku was eight years old he accidentally got hit by a car, which didn't harm him in the slightest, but completely crumpled the front end of the vehicle instead.
He wondered why he could hear his mother through the doors whispering to his dad about needing to tell him, but he was more preoccupied with why he could see through walls. A couple of years later his father came home from overseas early to speak to him. That was when his parents took him to a storage container that housed a strange pod where they explained how they found him as a child and that he was most likely an alien from another world.
Despite his growing powers, his parents urged him not to pursue a career in heroics. They reasoned that since he was registered as quirkless and with all the tests that aspiring heroes would go through, someone would notice that he wasn't human and they worried that some governments' might not like the idea of a free roaming alien and would do anything to get this information.
Despite it being his dream to be a hero like All Might, he agreed to put it away for his parent's sake. He rationalized that eventually anyone that wanted him for being an alien would come after his parents too, just to make sure they weren't aliens or for whatever they knew of them. He would just silently sit in class and do his work, letting the other kids pick on him and use their quirks, it wasn't as if they hurt, Kacchan's blasts barely registered anymore to him.
His promise to not use his powers changed one day when he was attacked by a slime man, forcing Izuku to quickly speed off so as not to get involved in anything that would draw attention to himself. He felt that was a huge mistake when on his walk home the same villain had managed to take a hostage.
He realized that most of the other heroes couldn't handle the intense heat of the flames and that Kacchan would die before someone else would be able to come to his rescue. Thinking quickly, he realized that if he moved fast enough then no one should be able to see him, so he dashed past the heroes blocking the civilians from getting too close and breathed on the flames to put them out, before clapping his hands to create a wave of air pressure, blasting the villain into sludgy pieces. He had only taken a few tenths of a second and was planning to run off when a hand firmly placed it on his shoulder stopping him.
All Might was mightily impressed that someone was able to move at the high speeds he was capable of. In shock the teen had stared at him for a second or two as the other heroes and civilians looked at himself and the teen, both of whom seemingly appeared out of nowhere.
"Fucking Deku," Bakugo swore in confusion as he looked up to see the tall target of his bullying.
Izuku panicked, he hadn't planned on anyone catching him but he didn't think All Might was there, he'd seen videos of him and figured they were about equal in speed, but he'd never tested his top against the heroes and assumed neither had ever gone all out on camera before. In a moment of terror, Izuku flung All Might's hand off his shoulder and sprinted away.
"Hey wait, come back," All Might shouted as he raced after the teen. Despite the other boy's head start and their similar capabilities, All Might was far more experienced with catching fleeing suspects and had cut off Izuku at every turn. "Seriously, I just want to talk to you," he said calmly as he ran alongside the teen.
"I'm sorry, I shouldn't have used my powers," Izuku replied as the two ran down a street faster than most people could see, the only indication of their passing was the gust of wind that came trailing behind them.
"Why, you did a great job, I think you could be an excellent hero one day," All Might said as he started to steer the boy towards the beach, using his larger frame to block any other paths and closing in slowly so the boy kept the same space.
"Because I can't be a hero," Izuku shouted. "I can't, it's too dangerous for someone like me."
All Might put on a quick burst of speed and got in front of Izuku and braced to slow him down, the pair skidding and kicking up mountains of sand as a deep groove was cut on the warm beach. "Explain," All Might said.
"I'm not like other people," Izuku answered. "If I become a hero, people will ask too many questions. Questions I can't answer and answers that will only hurt those I care about."
"It can't be all that complicated," All Might shook his head.
"All Might, I don't have a quirk," Izuku stated.
"Nonsense, you just have a," All Might dismissed.
Izuku raised a hand. "No, I mean it, I don't have a quirk, yet I can do all of these things," he said as he turned his head and fire twin beams of light out of his eyes into the ocean, where it struck it scored a deep line in the water, vaporizing the liquid and turning it to steam. Inhaling deeply, he breathed and turned the vapor into solid ice. "All Might, if I can do all these things without a quirk, what does that make me?"
"Not human," All Might guessed.
"Exactly," Izuku replied as he explained what his parents had shown him.
"So you mean to tell me, you're some kind of alien," All Might questioned. "Seems a little strange that any alien species would look so much like a human, but then again, maybe some of our more exotic mutations look like aliens, so who am I to judge," he laughed.
"This is serious, what do you think will happen when it's made known that not only are aliens, real, they are here and are as strong as All Might with more powers," Izuku shouted in frustration.
"Mass panic," All Might answered. "Kid, how about this, I help you become a hero, I'll call in some favors to get you passed some of the paperwork and people that might look into things."
"I really want to be a hero, but my mom and dad, if anyone found out," Izuku sniffled.
"We'll take care of you," All Might promised. "And if you're as strong as you say, then I think it would be more beneficial that you are properly trained to take care of yourself over hiding away and waiting for someone more nefarious to discover you."
"You'll have to convince my mom," Izuku sighed. "I could never get into UA without her finding out about it."
"No," Inko shook her head.
"But Ma'am," All Might pleaded. "The boy clearly needs a place to manage his power."
"Not a chance, he shouldn't be pushed into that life just because he's powerful," Inko folded her arms.
"Mom please," Izuku begged. "It's what I always wanted to do, I feel like I was meant to do it."
"Absolutely not happening," Inko sat on the couch.
"He needs to learn control and how to defend himself," All Might said. "He's going to be noticed one day and if that should be by the wrong people, without knowing how to properly use his gifts, he could be more of a danger to himself and those around him."
"He's not like the rest of the people out there," Inko shouted.
"I know, he told me," All Might informed the mother. "No secret stays a secret for a long time and truthfully, I would prefer him out in the sun, especially when I can no longer be there." All Might went on to explain his injury and how he got it, the expected time that he would no longer be able to be a hero. "But your son has all this power, that he could use to protect the world."
"But this guy who hurt you, what if he tries to go after my son," Inko asked as this was the first time she could confirm some evil person might be capable of hurting her son who over the years seemed to completely shrug off any blow he received.
"That is what UA will train him to do," All Might swore. "I promise he will be able to take on anything the world has to throw at him and he won't do it alone, he'll have the backing of all the heroes when it comes to be his time."
Finally, after deliberating it for a while, Inko acquiesced to the plan. "But call me, if anything at all happens," she demanded and wrote down her number. And that was how Izuku began learning to master some of his powers. The beach All Might had Izuku go to, to work on controlling his strength lasted all of a week before he had cleared all the debris, his speed and strength were tested against different weights.
"Well I'm impressed, Young Midoriya," All Might smiled as he looked over the work the boy had done. "You're certainly capable," he admitted.
"Yeah, I uh, didn't try to go too fast, but I was only using my speed and strength," Izuku rubbed his right bicep as he stood on the cleared sand with his mentor.
"Well, I have someone I want you to meet, then we'll work on training your other abilities," All Might said as he pulled out his phone and sent a text. A few minutes later it dinged, and he received a reply. "Good, he's available now," All Might said as he started walking. "We'll meet him at a restaurant with some of his friends."
When the two arrived they were met by a trio of teens older than Izuku. He had barely opened with mouth when a girl with periwinkle hair jumped forward and grabbed his hands. "Oh my gosh, hi, I'm Nejire Hado, what's your name? How did you meet All Might? Gosh you're tall, are you a foreigner? Where are you from? What is your quirk? Do you want to be friends?"
"Okay, give the poor boy some room to breathe Nejire," Amajiki Tamaki said as he pulled the girl away from him.
"Hi, Amajiki Tamaki and this goof ball here is, Mirio Togata," Tamaki introduced himself and his friend.
"Great to meet you," Mirio said with a smile on his face. "So what brings you here All Might," Mirio asked.
"Well I found a good training partner who might be able to help you get a handle on my quirk," All Might said.
Mirio's grin widened. "Really he's that powerful, what's your name friend?"
"Izuku Midoriya, and I wouldn't say I'm that powerful," Izuku rubbed the back of his head as he blushed at the praise.
"Please, you are at least my equal physically," All Might patted Izuku on the back. "And you have all those other abilities that would make you more than a match for even the toughest foe."
Mirio whistled proudly as he contemplated on the thought of someone being as strong as the Number One. "Oh we should fight," Mirio shouted. "Come on let's go now, I can't wait."
"Well this does cut out the need to ask if he would like to train with you," All Might shrugged and followed the three teens.
Izuku hurried to catch up. "Hang on a second, are you sure about this," he asked All Might nervously.
All Might laughed loudly. "Of course, Mirio is in his second year at U.A. so he's taken a hit or two," he said assuaging Izuku's fears.
"Alright then," Izuku agreed when the group found a nice secluded clearing. "So how do you want to, oh my god he's naked," Izuku shrieked as Mirio had already stripped.
"Yeah, it's just faster this way, get ready," Mirio shouted as he dipped into the ground, rocketing forward unseen by his opponent.
"Wait what," Izuku said in confusion as he took a step back. Mirio exploded out of the ground and slammed his fist into Izuku's chest before stopping and falling to his knees.
"Oh, wow, ow, jeez, ow, that hurt," Mirio hissed as he massaged his hand, thankfully not broken. "What are you made of," he asked as he looked up at Izuku who had no idea what to do.
"Uh meaty, flesh stuff," he dumbly answered.
All Might was currently standing off to the side holding his side as he laughed hysterically. "Oh wow that was hilarious, is that what it looks like when someone throws a punch at me?" The teens watched the old man have a laugh for a while before he came over. "Okay, now I want to give it a try. Prepare yourself Young Midoriya," he said as he reared back his fist.
"Okay this doesn't seem saaaafe," he screamed as the force of the blow sent him flying in the air. Instead of crashing back into the ground he hovered in the air. "I can fly?" he exclaimed.
"You can fly too? Oh your species is bullshit Young Midoriya," All Might balked. "Wait was that racist?"
"Species?" Tamaki questioned.
"Yeah Young Midoriya is an alien," All Might smiled as he watched Izuku slowly start to move around before the kid let out a whoop of joy and started to gain speed.
"Cool," Nejire gasped as she watched him fly, before pushing off the ground with her own quirk to reach him. "We can be flying buddies," she happily shouted.
Izuku was too busy enjoying the feeling of flying that he didn't listen to All Might tell Mirio or Tamaki about him being an alien. And a few hours later he made it home. "Mom, come quick, I want to show you something," he said happily.
When Inko stepped out of the apartment she saw her son floating off the ground. "Take my hand mom," he said. "Trust me."
"Okay sweetie," Inko nodded as she wiped her hands on her dress. Taking her son's strong hands he pulled her against his body. "I want to show you something amazing," he whispered as he floated up higher.
"Izuku," Inko nervously said as she gripper her son tighter.
"Trust me, I will not let you fall," he said as he turned her so she could see the city. "Isn't it beautiful."
"Yes, it's very beautiful," Inko gasped as she looked over the area she lived her entire life, never seeing it like this.
"I'm going to be a hero and I'm going to protect this mom," Izuku promised.
Inko nodded as she sniffled. "That's wonderful honey just make sure you also protect yourself too," she asked.
"I will," Izuku agreed as he lowered them both back to the ground.
Days turned into weeks, and weeks turned into months, but finally Izuku was there, standing outside the gates of U.A. to take the exam. "One more step," Izuku exhaled as he crossed the threshold. Even though Bakugo pushed into him, easily recognizing him from behind because of his distinctly un-Japanese appearance, he didn't stumble and he didn't fall. He kept moving forward, towards his dream.