So...this is my first fanfiction ever and yeah. This will probably be very bad, but hopefully I can make it better.

Anyways, this was an idea my friend and I wanted to do since it was really funny when we were discussing fanfictions we read and this story happened to come in mind. This will be a dual-type partnership, me being the idea person, writer, and other stuff, and her being the info person and stuff.

To the story, this will ABSOLUTELY follow the manga/anime (plot-wise, and stuff will be added and some events will be summarized.), so if a scene is missing from the story like All-Might giving Midoriya his hair and the training on the beach (which will happen in the chapter, just a forewarning to anyone.), just assume that it follows what happened in the anime/manga. And some things will be changed and will differ from the original source, just to put some spin into the story, a.k.a will probably be like some other BNHA fanfictions. This will most likely be a OP Midoriya and some characters will be act different from how they usually are. More warnings will probably be stated later on in the chapters. Oh, and no smut will be in this story...most likely, unless people want one.

If you're wondering about Midoriya's quirks in this, well he will have One-for-All, and his other one? You'll figure it out...hopefully/eventually.

As for the pairing, it is not yet set in stone, but most likely will be MomoxIzuku, but that's up to my partner-in-crime. Maybe this will become a harem, and maybe I'll make a poll later on. As for now, just put in the reviews or PM me.

I will be looking for beta-readers and stuff like that, so if you want to, go ahead and PM me so we can work stuff out.

Please, don't be afraid to give criticism and and suggestions in order to improve this story, but atleast try to be nice about it.

Enough rambling on about stuff, welcome to Flash of Heroism!

Prologue

4 year-old Izuku Midoriya walked out of the room with a emotionless expression, guided by his mother, Inko Midoriya, who looked sullen at her son. The hallway seemed to be much more gloomier than when they first entered the building (think it's a hospital, but I'm going to call it a building.). Inko scowled as many of the quirk testers whispered to each other as the mother-son combo walked passed them, giving the pair side glances, which made her scowl deepen and her hands tighten into fists.

"Hey, isn't that...?"

"Poor child..."

"That quirkless boy? Seems that he is part of the unlucky group..."

Inko turned to glare at the owner of the last remark, which in turn made the man step back in fear as he felt the intensity of her glare and muttered a quick apology before running off to probably administer another child. She huffed in annoyance before continuing to gently move her son towards the exit. She looked down at her son's emotionless face, but what broke her heart was the lack of life in his eyes, his mouth still stuck in excitement was now an accustomed part of his face.

"I'm sorry, but your son doesn't seem to have a quirk..."

Those words sunk deep into Izuku's mind as he couldn't accept that reality. But, he pondered the thought, no matter how much it hurts for him to think that way, what if he truly doesn't have a quirk? He feared what that might entail for him in the future...

2 hours later... (Currently 6:30 P.M.)

After the silent trip home, Inko saw her son do everything that might trigger his quirk. From trying to manipulate the water from his cup to trying to conjure fire from his hands. He even tried to manipulate small items like his mother's quirk, but to no avail. Izuku continued to think of ways his quirk might appear, and started to lose hope. Inko finished dinner and called out to Izuku, but he didn't respond or enter the living room. She grew worried and soon after, arrived at the door to his room and gently opened it to witness her son, tears running down his freckled-face as he gripped an All-Might doll that he treasured for all his years, and on the computer was the replay of All-Might saving all those people. She began to tear up as he slowly pointed towards the screen, dropping the hero doll and began let out more tears with his emotionless face still present. Inko embraced her son tightly as she let out her own tears, cursing her son's fate of being quirkless.

Little did they know, that the light of Izuku's fate would grow to be the flashing star that surpasses the odds.

Chapter 1: The Day of the Flash

Time-skip: 8 years later...(September 20, 20XX)

A couple of months after Izuku's birthday (July 15th, yes, I did check.), he experienced many different things after the shocking news of him without a quirk to call his own, from bullying by his child-hood friend Bakugo Katsuki, who refers to Izuku as "Deku" as a sign of him being quirkless, and the ridicule of his classmates throughout his junior high school life. This caused him to be insecure and more reserved as the bullying continued. This, in turn, caused Izuku to be more analytical, and his drive to be a hero even when the doctor uttered those cursed words, Izuku started to use those words as strength. He would take notes meticulously on every Pro-Hero out there and utilized those notes to further strengthen his mind to something that shouldn't be scoffed at.

Izuku, now 12 years-old, currently at a public pool not to far away from his was home, was getting changed. He felt extremely stressed and going to the pool surprisingly calmed his mind, so he always went when he had the chance. This happened frequently to the point where he knew the staff there and got in for free. He helped them with many different things as a sign of appreciation.

He let out a heavy sighed as he endured another round of bullying from Kacchan (If you didn't know, Izuku calls Bakugo that, just a little note there.) and the other students. He took his school uniform and slipped on his swimming shorts and headed for the pool. He walked past numerous people, nothing too out of the ordinary as it was pretty popular, especially since it was particularly hot today.

"39 degrees C? No wonder it's packed." Izuku grunted as he was being pushed around, his phone still in his hand as he tried to dodge the mass of people coming in and out of the pool area. He ended up losing his balance as he was shoved forward and into the poolside area. He cursed as he picked himself and again was knocked to the ground, gritting is teeth in pain as he tried to get up again, but this time feeling extra weight on top of him. Izuku looked and is breath hitched, on top of him was a girl, no older than 13, with her hair up in a spiky pony-tail and bangs on her right side. Izuku gaped at her body, which rivaled even adult women and gave her a mature vibe, and her swimsuit just proved those two points. A simple black two piece, and that was it. He gulped, but pushed the naughty thoughts away and slowly managed to bring the both of them up from their current predicament. He waited until she recovered from the tumble. She sighed and brushed herself off, fixed her swimsuit, and smiled at Izuku, who blushed calling her smile angelic.

"Thanks for that earlier, and I'm sorry for the inconvenience." The girl bowed her head. Izuku, whose face was bright as a tomato, stuttered out and told her to not bow her head. She smiled again as Izuku continued to stutter out responses. She extended her hand out, causing Izuku to stop his muttering triade. "My name is Momo, Momo Yaoyoruzo." Momo said as Izuku grabbed her hand, completely calm from earlier.

"Izuku Midoriya." He said, both firmly grabbing each others hand before releasing. Some time later, the both of them were lounging around the snack bar area as they continued to discuss various topics, and soon brought up U.A. Momo explained that she was going there by recommendation, and Izuku looked really impressed and asked her what her quirk was.

"My quirk is Creation, it allows me to use fat cells in my body to create various things as long as I know the composition of it. And of course, the bigger it is, the more cells I need in my system and more skin to be exposed to happen. Plus, it takes a long time." Momo pointed out her quirk, she looked at Izuku, who had admiration in his eyes. She blushed a bit before shooting the question back at him.

"I'm actually quirkless hehe..." Izuku said as he rubbed the back of his neck sheepishly, Momo looked stunned before questioning him.

"U.A exams are in 2 years from now, how are you going to pass if you don't have a quirk?" Momo asked causing Izuku to go deep into thought, which caused Momo to feel bad.

"Sorry, I didn't..." Momo said as she wanted to apologize, but Izuku interrupted her apology.

"No, it's alright. I've had that question thrown at me numerous times in the past. Even if I don't have a quirk, I want to become a hero that saves lives and to put smiles on everyone's faces. I want to become that hero." Izuku said as he smiled at the sky, Momo saw the determination and coviction he had and it put a smile on her face.

"That kind of hero, huh? Izuku Midoriya, you are strange, but hearing that makes want to root for you." Momo thought before standing up to stretch her legs out.

"I need to head home, it's getting late." Momo said, packing her stuff. Izuku checked his phone.

"Wow, we've been at it for quite awhile. It's been fun, Momo." he smiled before walking over to her, she smiled and was going to ask for his contact information, but suddenly a loud crashing noise was heard, causing the ground to shake and knocking everyone to the floor. Izuku quickly went over to Momo and asked if she was hurt, breathing out in relief when she wasn't before turning to where the crash was heard. Both were wondering what happened, and slowly moved towards the wall that was closest to the noise. Several people were already gathered by the wall as they inspected the wall for any signs of what it might be. They were close to the wall when suddenly someone came through the wall, sending a shockwave that sent everyone, including Momo and Izuku, and debris flying across the pool area. Izuku grunted as he hit the life-preserver stand, earning him a few scratches, but otherwise fine. He quickly pulled himself together before darting his eyes to find where Momo may have landed. Several seconds later, he found her under some rubble, she had had her legs pinned and a cut on her forehead. Blood slowly dripping from the wound. Izuku ran towards her and began to clear the debris, unaware that the person responsible was walking towards him. Momo, who saw him tried to warn him, but couldn't as the pain made it really hard for to speak.

"I-zuk-u...behind...yo..u..." Momo's hitched as the pain came searing back, even worse than before. Izuku gritted his teeth as he tried to clear away the debris.

"What did you say Momo?" Izuku asked as he frantically tried to help the pinned girl, but just as Izuku was making progress, the person, now identified as a villain grabbed him by the neck and started to slowly choke Izuku. Momo looked in horror as she tried to think of a way to help Izuku, but was ultimately helpless as Izuku struggled against the villain's grasp.

"Stop struggling, and I will assure your death will be as slow and as painful as possible!" The villain laughed maniacally as he continued to tighten his grip on Izuku. He was losing a lot of oxygen as he struggled to be released from the man's grip. Izuku began to lose focus as his vision began to blur, he noticed everyone that was at the pool today ran in terror. He cursed at his misfortune, and he hated himself for being so useless at the moment. If only he had a quirk, he could save himself and Momo from this guy, but he couldn't. After all, he was quirkless, he was...Deku. As he felt his last breath coming ever so closer, he went through all the stuff he wanted to do, like getting to know Momo better, and becoming the greatest hero ever. Izuku thought it was over until he was dropped from the villain's hand as he hit the floor, struggling to regulate his breathing pattern. He saw the villain's appearance (Like Muscular, but with just a simply physical enhancement quirk. Think of it like Muscular and Mr. Incredible merged together, without Muscular's quirk.) grab Momo from her debris prison, apparently she threw grenades at him, which enraged him, and was struggling to break free. Izuku, knowing it was stupid, charged and tried to make him loose his grip on her, but was swatted away, his swim shorts were torn, and he landed on life-preservers, most likely from the stand he fell on before. He tried to stand up, only to collapse again in a heap. His leg felt like jelly, and he could only watch as Momo was being molested by the villain. Izuku's gut began to churn in disgust as the man groped Momo, and he smirked at him while doing it, making Izuku glare hard at him. Izuku was very different from the shy, timid boy he was as he took on a persona of hate and disgust he cursed at his uselessness. He hated this guy, and he hated how Momo was crying and telling him to run away. He hated that he was quirkless, and wasn't powerful at all. He hated that feeling, he wanted to be the greatest hero of all, but he couldn't save his new friend.

His emotions began to run rampant as he saw the villain begin to rip off her swimsuit. Izuku saw red as he tried again to get up but couldn't.

"Why?! Why can't I save her?!" Izuku gritted his teeth and screamed in frustration. Soon after, a rush of energy flowed within Izuku as he felt his leg begin to heal. His body began to heal as his energy came back to him.

"Wha...?" Izuku muttered as his hands began to glow.

"It's finally time, Young Izuku." A voice rang through his head, causing Izuku to grip the his head in pain. All of a sudden, light shot at the villain, hitting him square in the chest and causing him to fly in the wall on the other side of the pool. Momo dropped to the ground and rushed over to Izuku and checked up on him.

"Are you okay?" Momo said as she examined him for any wounds. Izuku brushed her off.

"I'm fine...!" Izuku blubbered out as he quickly turned his head away from Momo, who was confused until she looked down and blushed hard. She quickly made a baggy shirt and a jacket, a blush prominent on both faces. She tapped him on the shoulder to give him the all-clear. Both were silent as they tried to form a conversation, but was interrupted as the villain got back up and looked at Izuku with murderous intent clearly visible within his expression. Him and Momo took a combat stance as he charged at them.

"Young Izuku, use your power well..." The same voice rang again in his head.

"Who are you?" Izuku questioned at the voice while dodging the attack the villain through at them, then Momo created several more grenades and threw them at the villain, enraging him even more.

"I'm your quirk, The Shining." The voice said as if it was that obvious.

"Really?!" I have a quirk? How does it work?" Izuku couldn't believe what he just heard.

"Yes indeed and it's really powerful, it grants you light manipulation and enhancements to your body at the expense of skin exposure. The less clothed you are, the more powerful you'll be." Izuku's mind slowly began to wrap his head around his new quirk.

"WHAT?! My quirk is basically flashing in public...why?!" Izuku didn't like that one bit, he was going to be naked, fighting villains. He couldn't accept that at all.

"Relax, when you use your power at the fullest, your "area" won't be seen by anyone , after all, there is censorship laws in this world."

"Censorship laws? Is this like some anime?"

"Actually, you a...Nope, never mind, you don't need to know that." Izuku brushed that little thing on the side as he faced the villain

"You know, in anime when they censor stuff that isn't allowed, most of the time they have a light coming from the god-knows-where to censor the things that aren't appropriate. You understand right?" Izuku understood what he was talking about, but he was confused on how it was a light quirk, and why he choose that to represent his quirk. He grabbed Momo and jumped away from their position as the villain smashed the spot they were on before.

"How does that have to do with my quirk?"

"Since you still have on your shirt even after what has happened until now, your powers aren't as powerful as it should be. So, take it off."

"T-take it off?!" There's a girl here?! That's indecent!"

"Just do it!" Izuku was fighting a mental battle until he screamed in frustration and took off his shirt, causing a bright to emit from his body, forcing Momo and the villain to shield their eyes from the brightness of the light. After it dimmed out, Momo saw beams of light covering Izuku's chest area (Just like how some anime have censorship over the smallest things, I digress, but it's just a little side note. This is not meant to be taking seriously, the quirk I mean, as it kind of jabs at the whole lights-out-of-nowhere censorship. I just like how utterly absurd it is. Anyways, continuing on!) Izuku stared at the light in surprise, but accepting the feeling of power and warmth the light gave. Momo looked in amazement, but questioned why it looked like is chest was censored like it wasn't safe for children to look at it. She didn't question it though, Izuku was really grateful that she didn't, as he would be too embarrassed to describe his quirk.

"You have a quirk!" Momo exclaimed as she stared with curiosity. Izuku just grinned sheepishly, still unsettled with his quirk being flashing of all things, but he turned to the villain and grabbed one of the censorship bars and charged at the man with blinding speed before slamming into the man, sending the man flying once more. He saw Momo running up to him. He quickly turned around to see debris flying straight at the two, he used the light of the bars to create a shield around the two and told Momo to stay in the shield, which she at first declined, but then agreed to.

"Just..be safe, okay?" Momo said as she looked worried. Izuku smiled as he nodded headed out of the shield and faced the villain.

"Wow, I feel powerful." Izuku said as more bars of light appeared and radiated with power, his whole body glowed with power as the villain stood back up, growling even more as he charged at Izuku, who charged right at him. Izuku's eyes were filled with determination as he now truly had a chance to be the best hero of all, and he took that chance with both of his hands. Izuku gathered the censorship bars and concentrated the energy and unleashed at the villain. He used his Plus Ultra and grasped his quirk, his hope, and pushed forward! His dreams, shining brighter than it ever was before. Pushing past, the doubts and fear and just pressed forward, and his adventure began right there at that very moment. Momo continued to look on as she started to create several items that would help Izuku, settling with several tacks and a staff that was at least twice her height. She quickly threw the tacks, placing them in the way of the villains path. The man was unaware of the tacks, as his target was the little broccoli that was at the most, to his lower abdomen. He smirked as he charged at Izuku, too confident that he would win against the junior high boy. But, that ended when he stepped on the tacks, and was hit by a staff, which Momo used her training and knowledge to quickly consecutive jabs against the man's weak points. She had come out from the shield and was at Izuku's side as she smiled at him, her staff and some smoke grenades in hand. Izuku smiled at her support as they faced the villain, who was even more enraged than he already, if that was even possible.

They quickly came up with a plan and she made some heat-vision goggles to have an edge over the villain, and to see each other. Momo would throw smoke grenades and continue to pin down the villain at his, and Izuku would rush in and take down the villain down, once and for all. However, the lack of any Pro-Heroes got them a little bit worried, but they pushed on as they executed their plan. Izuku was really impressed with Momo's athleticism and combat prowess, she gracefully dealt each blow with extreme precision and power as she hit the villain's chin, sending him up in the air. The villain was trying his best, but Momo became too much for him as he started to attack wildly and blindly. Momo backed up she tossed another smoke grenade and threw a grenade she conjured. Izuku rushed in as Momo threw the grenade and forced the villain to lower his guard a bit against the explosion. Izuku took this chance to concentrate on his quirk, causing his fist to envelope in a blinding light as he rushed at the villain with blinding speeds. The smoke cleared as the villain looked in disbelief as he saw Izuku already within arms reach. Izuku tighten his fist as he put his everything into his punch.

"I will defeat you!" Izuku said as he reeled his punch back, putting his feelings into this punch. He smiled, he had the power to become a hero, but what he liked better was that he actually saved people, just like a hero would do. And that made Izuku giddy inside.

"Shining Style: Censor's Python!" Izuku put everything into that attack. The force created a huge crater as the villain took the blow full, the pressure was too much for the man to endure and ended up unconscious. His body in a crater on the wall of the pool. Izuku huffed in exhaustion as he fell onto his back and breathed in the air as he looked up to the sky, raising his fist into the, then grasping it tightly as he discovered his a quirk to call his own. He sighed as he he laid there, Momo was shocked at the scene in front of her.

"Amazing..." Momo whispered as she quickly ran to Izuku and knelt beside him, She smiled as she saw he was okay and looked up into the sky, everything became a blur for the two as police sirens blared from the background, soon after police rushed in and began doing their job. Both of them were asked to come with them as they arrested the villain. Both of them were silent as they were escorted to the police station. Izuku and Momo sat at opposite windows as they used the time to let what happened sink in.

"That was amazing, Young Izuku." The voice said, clearly impressed by the sound of his/her voice. Izuku continued to watch as they entered the highway, passing by several buildings, then he saw U.A. Izuku smiled as he dreamed about going there and becoming a hero. Unknown to Izuku, someone was watching the battle. All-Might in his glory stood from the roof and looked at Izuku and grinned. He was going to interrupt the fight, but was in awestruck as he saw the determination on the young boy's face as he fought the villain. He saw himself in that boy when he wanted to become a hero, and finally made up his mind.

"His spirit to become a hero inspires me! I think I have found me successor!" All Might laughed before taking off from the area. He went off to find the young lad at the police station. This would set Izuku to become the greatest hero of all. PLUS ULTRA!

End

So..yeah. I made Midoriya have a flashing quirk. Of course it doesn't suit his personality at all! That's the whole point!

Anyways, here's the quirk info for The Shining

The Shining: A light-based quirk that utilizes censorship bars made of light. The less clothed the owner is, the more powerful it is. And it grants the user enhancements like regeneration and speed. It's flashing in a nut-shell, but with anime-styled light censorship. If you're wondering where the light comes from, I don't know. That's how anime censorship works.

So, how did I do? I think I did alright, I guess. I need to fix up on my English as I made a bunch of run-on sentences and stuff like that.

I suck at action scenes, so...not exciting fights...until I get my act together on it.

I put Momo as the first girl to simply because I love Momo as a character and her design. She's #1 in my book, and under her is Camie, then Hatsume.

Oh, I forgot. Sorry to everyone, but this will not be a OchakoxIzuku. Unless this becomes a harem, then I'll decide from there on.

Like I said, if you want to beta-read this story, PM me. And please give any suggestions that will help me in the future. And I might ask for OCs, so be on the look out for when I do.

Thank you for reading! See you in Chapter 2!