Disclaimer: My Hero Academia is the property of Kōhei Horikoshi and Shōnen Jump.

This is a non-profit fan-fiction.

I wonder if I'll be able to keep this up once the fever goes away...

Just about everyone could tell you exactly where they were that day. The exact time, what they were doing, how they felt, what the sky looked like from where they were standing. It's the nature of national disaster, something that so radically changes the face of a society and pushes history down a path it will never be able to turn back from.

For the little guy, for him and his family, well... that'd be far to close to the epicenter for comfort, just going on a school picnic before the sky turned black, then they felt whole lot of fear. But if you saw the battle that they did, survived what they did, you'd remember that day better than any other. There's an old saying about finding a wolf, how bad and traumatic memories are instinctually held onto. Remembering bad things that happen to you is your mind's way of protecting itself, trying to keep itself from living through that trauma ever again.

And if you're a kid? Just a little, innocent thing who'd never once seen the uglier sides of life? Double that staying power, if not more.

When the memory began, the first thing he remembers even now, he was sitting on the swings alone. Other children were running about and playing, using their quirks -super powers inherited from birth- to have a rather energetic round of tag. Poor thing, alone on the swings... didn't have a quirk. A freak of nature, along with twenty percent of the population who was born like that.

"Why does Bakugo always get to be the hero?" One child whined, crossing his arms.

Bakugo, his palms crackling with small explosions -like firecrackers- just cackled. "Because if any of us is going to become the next All Might!" He pointed toward a screen that loomed over the park, some distance away. At that exact moment, it was broadcasting an interview with the man Bakugo had just mentioned "It's gonna be me!"

Sighing, the other boy just went quiet, but another one piped up in his place. "Why is he called the 'Symbol of Peace' anyways?"

Bakugo rolled his eyes. "Are you stupid or something? It's because he's so awesome that criminals are afraid to be bad, even when he's not around!" Bakugo flashed a wicked grin, cackling under his breath. "Because of that, we don't have a bunch of stupid villains running around making the world a warzone! He's so strong he doesn't even have to throw a punch to keep evil in it's place!"

Scratching the side of his head, that same boy gulped. "So... what do you think will happen if he dies?" Bakugo looked at him like his brain had just fallen out of his head. "Wouldn't more villains show up and make the world... scarier?"

At this, Bakugo just laughed. "Wow... you're even dumber than you look! something like that will never happen, stupid!"

As far as the child alone on the swings was concerned, Bakugo was absolutely right. All Might really was that powerful, and there was nothing that would ever change that. No villain or other force on earth would ever be strong enough to kill or even hurt him.

But that wasn't what was on his mind.

Some distance away he watched as his mom and dad seemed to be arguing, quietly. Avoiding making a scene, but not able to avoid airing their dirty laundry in public. Not that he knew, he was far too small to know that. To him, they just looked upset. Like they were angry at something, maybe each other for some reason. Mom's face was quivering, trying not let tears out and dad wasn't even looking at her.

The end of their relationship, not that he knew it then.

Next thing he knew? The world errupted with explosions.

A pair of bodies had crashed into each other, then hit the ground near the school so hard they left a crater. Hurricane force winds sent almost everyone flying as people ran screaming. The kid was thrown off the swing, and the bodies pulled themselves from the ground and started throwing punches at each other.

It was little more than a rapid, calculated exchange of blows. Their fists striking each other with such ferocity that the wind-force created from the impacts leveled the buildings around them. Civilians, children fled the scene as quickly as they could, leaving the little kid behind.

Pulling himself off the ground, the little guy's eyes went wide. "A-All Might!?"

The hero didn't hear him, he was far too busy fighting for his life. A decisive strike sent the villain flying right past the kid, sending him screaming to the ground as the villain crashed through a building and All Might followed in a blur. From what the kid could see, the villain was dazed and All Might had his senses completely in hand.

Taking advantage of this, All might grabbed his enemy and started using him as a battering ram against the ruined building around them. Tossing him around like a rag-doll he downed the skyscraper and turned it to dust. Hurling his fist into his opponent's mask he saw the translucent metal dent and crack. Taking a heavy smack to the head, from his enemy smashing a rock into his skull, one of his eyes was blinded by blood flowing into it. In retaliation, All Might grabbed a steel girder and slammed it into his enemy's head from above; crushing him down like one might crush rocks with a sledgehammer. As the dust settled it appeared he'd driven his opponent into the earth as though he were an over-sized nail. For a few moments all seemed quiet...

Ripping his way upwards, frreing himself from the earth, the villain uppercutted All Might's chin. Sending him flying through some nearby wreckage, he saw his chance. Flying forward, fingers ready to deliver a lethal jab, he summoned one of his many quirks. Thrusting his hand forward his fingers stabbed straight into All Might's ribs. Reflexively, the hero recoiled from the injury, grabbing the wrist of his enemy. Spinning around mid-air he smashed the Masked Villain through the wreckage below them. Preparing to strike his opponent with another earth shattering blow All Might suddenly felt a searing pain. As his muscles contracted from the pain his hand clutched at his left ribs.

Something was wrong. This injury wasn't a simple puncture. He crashed into the wreckage above his Nemesis. All Might, shakily, rose to his knees. Pulling his shirt up he saw his very flesh rotting away. Spewing blood from his lips he suddenly realized what had happened, "So you stole another-" All Might was interrupted by a fist carving its way through the debris beneath him. As he was punched clean under the jaw he somersaulted back into the street. His injured ribs kept him off balance and he crumpled to the ground.

His Nemesis leapt into the road after him some thirty feet away, "I told you," his voice at an even level, part of his mask crumbled away, half obliterated.

A glowing red eye shone from within the ruined, metallic cowl. His pointy, jet-black hair jutted outwards from the opening in the mask, obscuring his lifeless skin. Blood, steaming on the metal, flowed from his wounded face. All Might saw the end result of his last victory against this man. His eyelid and the skin around his eye was gone, torn asunder by the punch that ended their last bout. As the hero's eyes widened and his smile vanished, he realized the reason behind this blind fury: his Nemesis had decided the intensity of their rivalry had crossed the line.

So the villain said, "this is the end." Beyond the annoyance of All Might foiling his plots over and over again he'd made it more personal than he could stand by disfiguring him.

No matter what, at least one of them was dying today.

Groaning from the pain, All Might rose to his feet. He hated to admit it but that looked to be the way this fight was headed. He could feel the effects of his Nemesis's newest quirk inside his body. His organs were rotting, "Maybe so..." his voice was weak, "but if that's the case," he returned to his combat stance, ready to strike back or defend himself, "then I'm afraid I can't hold back."

"Good," and his Nemesis fell into his own combat stance, "let this be our final battle, All Might. Put everything you have into it, because I..." his eye narrowed and brow angled downward. His blood-lust was unmistakable, "am going to kill you."

All Might's smile returned, "And how many times have I heard that before?" and in the blink of an eye they were striking at each other again.

Flying about in the air, devastating what remained of the buildings around them, they tore their knuckles into each other's flesh. A hurricane, raging outward from them in all directions, sent rubble flying further into the city. Buildings were leveled, entire city blocks were reduced to shambling husks.

It was like three F5 tornadoes had hit this part of the sprawling metropolis simultaneously.

From his vantage point, huddled to the ground and covering his head, the child saw everything. Quivering, quaking, he just wanted this to end. All Might had to just win already! He had to beat the bad guy and make everything safe again!

Unfortunately, it was beginning to become clear that All Might was losing. Taking a deep breath he formulated a desperate plan. This either ended in his victory or the entire world would suffer the consequences of his defeat. Landing on the ground, he stared right up at his enemy. He was soaring down like a homing missile, hand ready to jab at his already injured side. All Might merely smiled. He knew he was going to go for that. Forcing all of his power several times over into his right arm, his left hanging there like a broken wing, he braced himself.

His enemy struck true, driving his hand clean through All Might's ribs. Blood spattered across the ground, pouring down All Might's side, as his organs and flesh rotted like rancid meat in the sun. The internal damage had been more than fatal. A sickeningly gleeful smile spread across the ruined face of the villain. He'd won.

Shattering those dreams All Might retaliated as never before, "United..." he choked, blood spouting from his mouth, "States..." his voice raised in volume, "SMASH!" shouting at the volume of an erupting volcano he swung his fist into the air, bringing it down straight onto his Nemesis's head.

Unleashing the entirety of his quirk's collective power he blew a crater into the ground beneath them. The force of the punch sent the air rocketing away and ignited it. Flames engulfed the area around them in a bubble. Airborne supercavitation. Then, as the laws of physics slowly realized what had happened, the air rebounded. Collapsing back in on itself a second shockwave was created. Emanating outwards, like the force of an atomic bomb, the remaining rubble was erased from the ruined city around them. As the air temperature momentarily burst into the range of several thousand kelvins tiny bursts of light littered the air: sonoluminescence.

The child leapt to his feet, daring to step forward when the wind finally subsided. "ALL MIGHT!" he screamed.

As the dust settled, the child saw All Might lying inert upon the rubble. Charging forward, the little guy starting shaking his motionless form. Even as he desperately tried to wake him, screaming his name and begging him to wake up, reality had slowly started to sink in. The body he was touching... was growing colder by the second.

All Might... was dead.

A hand grabbed the child's shoulder, spinning the crying boy around. Eyes wide with terror, the boy saw a single, bloodied, glowing, red eye staring into his. The villain was alive... and he was touching him! He was going to die!

The child opened his mouth to scream, only for the villain to jam his hand inside. Blood poured into the child's mouth, and he started screaming through his nose. That is, until the villain pinched his nose shut and waited. The kid couldn't breathe... he couldn't breathe! The villain's body was... trembling, the light in his eyes flickering. He was... weak, possibly dying, but that didn't change the fact he couldn't breathe!

His hands clawed at the villain's, trying to make him let go, but he never did. "Dr..." the villain's voice was faint, barely even audible over the wheezing of his own breath. "Drink... and I... let go..."

Never in his life would the little one forget the vile, slimy feeling of the fluid oozing down his gullet. The flavor, the horrid need to wretch that followed, but he did as he was told.

Even with so little of his face visible, the villain smiled as he collapsed. While the child gasped, his body heaving as he was finally able to breathe again, he wheezed out one word. "Name?"

The child, despite his trembling knees, despite his overwhelming fear, answered. "I- Izuku M-Midoriya..."

Still smiling, the villain nodded."Do... you have a quirk?"

Feeling like the smallest creature on earth, he shook his head. "No..."

Then, in an almost friendly way, the villain chuckled. "Well... it's... your... world now..." As he gently spoke, Izuku felt his fear fading, watching the light fade from his eye. "Use... your power well..." Then his eye closed, and he went as still as All Might.

He was dead too...

Completely unsure what he'd meant, Izuku just stared at the lifeless body, completely at a loss for words. Then, on instinct, he started wandering away from the scene. Somewhere far away, he heard his mother screaming out his name, then his wandering turned to sprinting. His father was nowhere to be found, and would later be counted among the dead, but he had his mom.

Amidst the spiraling chaos the world was about to become, in the years that followed, she'd be among the few good things she had. Sadly, she would claim the same about he, for the boy who questioned Bakugo was right. Without All Might, his powerful presence keeping villains scared, the world would soon see just how many people were willing to turn to crime to get what they so desired.

The world was headed into darkness now... and little did Izuku Midoriya know his part to play in all that would stir withing that darkness.

Location: Musutafu City, primary school 11-C

Age of Izuku: 5

Incident Number... Zero