Prologue - Might of Heroes

I normally do the speech thought thing but I'm sure most of you already know.

Anyways, this idea has been boiling in my head for awhile, a world fusion between OPM and BNHA, with canon divergence and expansion. Some characters imported from other franchises but not their entire narrative because that many main characters just completely fuck up a story and make it into a jumbled mess of blah.

Before we start however, I want to just leave some notes because some people will probably get confused about it when the time comes.

Feel free to skip the notes though as they are not needed to understand the plot, they might answer some questions you might have later though.

Note 1: OPM characters/monsters feel much stronger than BNHA characters (even with All Might), so power scaling will have to be fixed - especially Saitama (like I know he's a joke character and all, he's still going to be immensely strong, just not comedically broken and will have actual limits). I'm going to nerf OPM characters and buff BNHA characters, so the power scaling is at a midway point. Ex. Saitama's absolute highest strength is what he displayed against Boros with maybe some cutbacks on destructive power. I'm still going to keep his attack names though. Ex 2. Endeavor can generate fire power that will equal if not surpass Genos's original power.

Note 2: There are some changes to certain people's quirks - not completely different quirks but more like being more imaginative mechanics wise and maybe an extra technicality here and there. Not going to spoil it here but if you really want to know just PM me.

Note 3: I'll be honest here, there are some changes I will be doing to some characters/quirks simply because I think it would be cool/funny. These changes aren't important to the plot. No spoilers for people but PM if you want to know.

Note 4: All the characters will be in character (my best efforts in doing this) - not just a replica of canon but based around their core traits/values, any changes I make I will try to make as reasonable as possible based on difference narratives or circumstances - which means no gay Bakugo/Todoroki or edgelord murderer Izuku (sorry kids).

Note 5: Just to let you know, there are GREAT shifts in motivation, mainly in the Villain's side. Considering the premise and the main antagonists changed, it will reflect in some of the characters.

Note 6: The main perspective of the story will be my OC(s), and this story is an OC-Centric, BNHA x OPM world fusion, Canon divergent, and Canon expansion. The focus will likely shift to some other main characters as I'm not a big fan of pure 1st first person stories.

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IMPORTANT NOTE: MAKE SURE TO READ AT 1/2 SETTING FOR BEST PARAGRAPH SETTING - This is so your eyes don't get strained on wider screens having to read a long-ass sentence from edge to edge.

We all know that story, of the bioluminescent baby born in Qing Qing, China. From that occurrence, the arrival of those born with supernatural abilities came, seemingly out of random. What was a human? What was a limit? The definition of such words became unclear as society fell into chaos from the emergence of powers, called 'quirks.'

Laws became empty words, and crime seemingly exploded overnight. Destruction was brought to all corners of the globe until those who chose to fight for the side of good repelled them, pushing them back into the shadows.

Soon, a fragile peace blanketed the world; people all over began asking, why did these quirks appear? Why now? Why after all this time? Humanity has adapted through natural selection and countless small changes because there was something outside, something in the environment that would make survival difficult or impossible without such a change.

So what? What could have possibly warranted such a drastic evolution?

Why?

How?

The questions that was in the minds of everyone will soon be answered, but in a form no one could possibly be ready for.

15 YEARS PRIOR TO CANON

Breaking news: The towering scaled creature the authorities are describing as some sort of 'sky dragon' remains uncontested in its rampage across the Asian continents.

No accurate descriptions of the monster have been made of yet as the storm that seemed to follow its movements are preventing all attempts made to take a picture.

*Bzzt*

-dreds of heroes have already fell victim to its overwhelming strength, hundreds of thousands of civilian fatalities have been reported, and millions more were reported injured or missing.

Even China's greatest hero, Shen Long, was only able to injure the flying monstrosity, forcing it to move towards the East, before being beaten out of commission.

The military, despite their greatest efforts, are unable to do any damage whatsoever to the beast a-

*Bzzt*

-rities have already begun a mass evacuation on all major cities and its surrounding areas as it seems that the projected path of destruction from the monster will go straight through South Korea, into the Sea of Japan, through the cities of Kyoto, Nagoya, as well as Tokyo all within the next hour. It is very unlikely that any sizable portion of the metropolitan population will be able to escape the danger zones.

Experts are unsure as exactly why this monster has chosen now to attack with such force. No clues have been given on this seemingly unprovoked assault, any resistance made by the militaries of each passing nation has only ended in fail-

*Bzzt*

-eroes are all ordered by the Japanese government to not engage the monster. They are hoping that it will simply pass through the cities in a straight path into the Pacific if no resistance is offered during its move. Th-

*Bzzt*

-ple are wondering why All Might is not sent to deal with the threat, could it possibly be that the officials are not sure if he was capable of winn-

Click.

A large figure, easily over two meters tall, smiled through gritted teeth as he stood up from his chair, making his way towards the balcony to his side.

"Are you going to go, Toshinori?" Yes.

The blonde hero, covered from head to toe with pure muscle, looked down towards an elderly man dressed in a loose-fitting yellow costume.

"I can't just ignore it anymore, Gran Torino, this order be damned." All Might looked towards the west where a violent thunderstorm could be seen in the distance, contrasting the blazing determination within him. They won't be able to get away, tens of millions will perish.

The older man, easily less than half the height of his student, looked as if he was going to stop him, before relenting with a sigh.

"Normally… I would object," despite his calm demeanor, Toshinori could tell his teacher was in great turmoil just speaking his next words, "but with Shen's defeat, you're probably the only one on this side of the world that stands a chance against something like that."

I know. I have to do this.

"I couldn't stop you even if I wanted to, Toshinori." Gran looked up at his old student with a challenging glare. "But that's how you are, once you have your heart set on something, nothing in the world would be able to stop you."

The two men simply stared at one another, before All Might turned back towards the oncoming storm.

"If I don't come back-"

The elderly hero zoomed from where he was, kicking All Might straight in the cheek. "Don't even think about something like that!" Gran's outrage shocked All Might, but in reality, it really shouldn't.

That's right… I can't lose, I can't let that flame be extinguished!

"Gra-"

"Don't Gran Torino me! Just… get going, and once you get back, we're going to have a long discussion about this recklessness of yours!"

All Might simply smiled and nodded.

Believe me, if there was another way, I would happily sit here and follow the laws, but I won't let millions die because I decided to do so.

Wordlessly, All Might opened the glass doors leading to the balcony. With a final look to his mentor, he leaped from the building, quickly disappearing towards the horizon.

All Might took great care in moving out of the city area; he knew that if he travelled at full speed right away, he likely would have annihilated a couple blocks just from the wind pressure.

This should be far enough.

With that thought, his muscles tensed up, generating power unmatched even by the greatest creations of man.

BOOOOOMM!

A massive crater formed from where he leaped, sonic boom after sonic boom resounded throughout the landscape as All Might propelled himself through the air in hypersonic speeds. Every single kick he made seemed to distort the immediate space as he blasted straight through the skies.

After this, there'll be no turning back.

Within seconds, All Might reached the western coast of Japan. Despite the rampaging tides, the cacophony of thunder, and the sound of torrential rain, he could feel a sense of serenity. Amidst all the chaos, something in his gut told him that he would win, and that only made him smile that much more.

With a final look towards his home, he jumped towards the center of the oncoming superstorm.

Time seemed to slow down as he approached the spiraling mass of clouds in the distance. Despite his prior determination, he started truly thinking about what he was actually up against. For ever since he became the #1 hero, there wasn't any individual, villain or otherwise, that could challenge him. Even the heroes that ranked right under him in the global rankings could not best him, especially in terms of pure power. Shen Long, a world-class Chinese hero whose quirk allowed him to transform into a dragon, was only able to injure the beast, before being beaten… in a single shot.

What if I lose?

All Might gritted his teeth, all while keeping his trademark smile. No! He couldn't think like that, if he truly failed, there would be no one left to stop this monster. It would be free to annihilate everything and everyone; humanity itself could possibly even face extinction… damn it, thinking about this will do me no good.

"It doesn't matter now, I'll just have to fight what-"

SLAM!

"ARRGGHH!"

The hero was now shooting towards the ocean at breakneck speeds, the sounds of nature easily masking the movements of his adversary.

Damn!

Righting himself in midair, All Might kicked the air below him as hard as he could, shooting himself back towards the cloud that made his descent look like slow motion. Below him, the ocean displaced as if a mountain was slammed right onto its surface.

W-what is that thing? Directly above, was some sort of multi-limbed eldritch monstrosity that looked nothing like a 'sky dragon.' Dozens of scaled tentacles protruded out of the thunderclouds, each one large enough to easily pick up a frigate and snap it in half. If All Might didn't believe in living nightmares before… then he definitely did now. (1)

How can something like this possibly exist?

All Might shook his head, dismissing the question. It didn't matter just where and how this absolute terror came to Earth, but whatever it was, he had to stop - no - end this thing no matter what.

The taste of metal saturated his mouth. Curses. He had been bleeding from a busted lip, but the feeling of pelting rain completely masked the constant flow of red liquid down his chin. Wiping the blood with his hand, All Might shot towards his opponent.

It already took first blood, I won't be caught off guard again!

"CALIFORNIA SMASH!"

Despite not being able to see the main body, All Might simply used one of his more powerful attacks towards the whirling mass of flesh. The accompanying wind pressure easily blasted away all the rain, clouds, and even caused tidal waves to form in the sea miles below.

W-w-what?

Words could not simply do the beast in front of him justice. What he saw barely scratched the surface on what he thought he was dealing with. The spiraling clouds that had obscured his sight of the monster were all blasted away, creating a massive hole in the storm, revealing the sun shining from above.

All Might stared at the… thing, in front of him, and whatever it was, it stared right back, with its hundreds of grossly misshapen eyes.

SCCCCCCCCCCCREEEEEEEEEEEEEECCH!

The monster didn't seem happy from what he did, if the orbs of energy that was being charged from every single mouth, orifice, and opening was of any indication. The hero was forced to evade several miles to the side to avoid the multitude of beams that converged on his pervious location.

It's still looking at me. All Might tightened his fists as he noticed that each and every one of its eyes followed his movements perfectly despite travelling at his speed. The mass of tentacles and flesh began floating towards the determined hero, a murderous red glint present from the monster's glare.

So, it can read my movements, but can't move fast itself…

BOOOOOMMM!

All Might's thoughts were interrupted by the chain of explosions just before the horizon, his eyes widening at the sheer destruction the monster was capable of with such a casual attack.

Despite that, the muscled hero was able to get a good estimate of the monster's strength from their brief exchange. While it was no doubt deadly, All Might knew, that victory was graspable.

"It's all right now," he told himself through his own fear.

"Why?" Steeling his will and emptying his mind, All Might charged.

"Because I am Here!"

Somewhere in the Sea of Japan

"Takuya, fly faster! We have to get this on camera!" A middle-aged man, bald and short, wearing an All Might jacket screamed at his helicopter pilot while a younger man beside him tried his best to hold onto a studio camera.

"Mr. Miku, this is madness! This chopper is not meant to be flying int-"

"I DON'T CARE, someone called from the office saying they saw All Might flying towards the dragon!" The bald man simply shot into the cockpit, before taking out a pair of binoculars to see ahead.

"W-we were supposed to be filming the evacuation… what happened?" The man complained, a bead of snot dripping down because of the horizontal rain that easily found its way into the interior.

Seconds later, the bald manager dropped his binoculars and pointed towards a bright patch of sky, "LOOK! I can see something there!"

"Got it, Mr. Miku!" The pilot replied, before flying to get a better view of whatever was being hidden from sight from the lower-reaching clouds.

Instantly, the camera man extended a stand on the side of the helicopter and placed the large camera right on top.

"Cam 1 ready and recording!"

"…"

"Mr. Miku?"

The camera man, who was busy finishing setting up his equipment, poked his head into the cockpit to check on the others, only to see the blood drain completely from their faces. He was curious sure, but something inside told him not to look if he wished to keep his sanity.

But he did.

Normally, to scream would be a natural reaction when seeing something terrifying. They tried, but they couldn't make a single sound. The pure, unadulterated terror that filled each man to the brim paralyzed them to the core. It was as if they gazed at a predator so far above them that they could not help but completely lose all hope of living. Even ending their own lives would have been considered the better choice if it meant escaping the knowledge itself that something like this existed in the vast world.

That was a feeling shared by all who bothered to watch.

CRRASSSH!

The three man were shocked out of their stupor as the monster was sent hurtling through the skies just past their helicopter, a lone figure, barely more than an ant in comparison, flew towards it like a inextinguishable flare.

"W-w-w-wh," The camera man began, but failed to get the words out.

"F-follow t-t-them!" Mr. Miku was barely able to stand, for his knees were unresponsive. It took every ounce of his slowly recovering strength just to get the words out.

"A-a-are you i-insane?! We have to get away!" The pilot began to turn away from the fight, but found a hand gripping his shoulder tighter than it had any right to.

"N-No!"

The pilot stared into his manager's eyes, seeing the terror reflected in himself.

"I k-know you are scared, believe me, I am this close to soiling myself. But we have a duty!" The middle-aged man began, pointing towards the back and forth onslaught occurring right outside the windows.

"All Might is fighting out there all alone!"

The other two men looked at him as if he grew a second head.

"Whether he wins, or god forbid, loses! We have to let him know the whole world is with him!" Miku could tell his workers were still not convinced.

"Sure, we could turn away in safety, but where are we going to go?!" With every word he spoke, he found a bit of his fear trickling away.

"It would come for us anyway… and the only thing we would be able to do, is to resign ourselves to our fates." In response, the two younger man simply looked down, turmoil written on their face.

"So you know what? If we're going to lose, we lose, together. If we win, then we win, together!" The two men looked up at him, fear slowly disappearing from their faces.

"Besides, if, - no -, when All Might wins, someone will have to carry him back to Japan!"

Silence filled the aircraft, the sounds of ambient thunder resounding everywhere around them.

The camera man smiled, walking towards the camera shakily, before giving a thumbs up.

"Together."

After doing the same, the pilot turned towards the controls, and tightened his seat belt.

"You got it, Mr. Miku."

Despite his still-shaking hands, the pilot flew towards the battle, with the cameraman catching every exchange with laser-sharp focus.

"ARRGH!" All Might screamed as the monster's constant blue beams grazed his side. The valiant hero was covered in blood from head to toe, it just barely hid the dozens of bruises and burn marks accompanying his disintegrating costume. Every part of him hurt, and the likelihood of him perishing from this battle, win or lose, just seemed more and more possible. No matter what, even if he was going to die, he would be sure to take this monstrosity down with him.

All might weaved around the attacks coming at him from every direction; despite their speeds, the hero's honed battle instincts from training with his mentor all those years back allowed him to predict their trajectories.

Thank you, Gran Torino.

"New York Smash!"

All Might landed a powerful punch straight onto one of the creature's grotesques eyes, causing the million tons of flesh to fly through the sky. As he prepared to follow it, he noticed something standing out from the corner of his vision.

Is that… a helicopter? And it's not even military?!

"…"

No, no, no! There wasn't supposed to be anyone here! How can someone be stupid enough to actually come out here of all places! Now he had to be careful on where he landed his strikes, any uncontrolled move could send his spectators straight into the sea.

Those reporters are absolute madmen!

Refocusing on the monster, All Might followed it despite his injuries. Of course, his opponent didn't look any better. What used to be dozens of metallic tentacles was now accompanied by a fair share of stumps, and the once menacing field of eyes that stared into his very soul was now filled with bloodied holes.

Damn! He was quickly running out of steam, and if he kept this going for too long, the monster might out-last him and end up making its way to Japan. No matter what, he could not let that happen! Previously, he had been careful on playing offense and defense, but now, he had to end it quick.

I'll just use 'that.'

Once again, All Might kicked himself towards the eldritch being, lifting his arm to block a retaliatory strike from one of its remaining tentacles. Evading another dozen strikes, All Might saw a brief opening in the creature's defense.

"Say your prayers, monster!" The attacking hero shot straight through the wall of tentacles the monster had to protect its main body, before delivering the first strike of many.

"Texas!" A right hook.

"Louisiana!" A left.

"Arkansas!" A right again.

Every punch was delivered with killer intent, for the monster flew back with every punch. All Might easily followed its movements, jumping from one side of the hulking wall of flesh to the other to take advantage of its momentum.

"Mississippi, Alabama, Tennessee, Virginia, North Carolina!" Every strike increased in ferocity, forcing the beast back and forth in the air. Despite its power, it could do nothing in the face of such overwhelming speed.

"South Carolina, Georgia, Florida!" The final punch of the series forced the monster towards the skies; All Might easily made his way past it, before kicking himself towards the skyrocketing mound of blood and gore.

"CONFEDERATE SMASH!" The final punch shook the area from horizon to horizon. The clouds were knocked away for at least a dozen miles, and the beast was sent hurtling down to the sea.

I guess that's that…

A beat.

"▂▂▃▃▄▄▅▅!" (2)

A roar that was as inhuman as it came resounded from just above the sea. No! All Might looked down to see the beast had righted itself, a final eye that filled the entirety of its main body had opened, a menacing blue glow emitting from the dead center. The hero looked behind him just to see the whirling helicopter barely able to keep itself flying from the winds generated from his punch. I tried my best to be careful too!

Dozens of strategies went through his mind, he could easily dodge and deliver a final blow to the monster, but the people behind him would no doubt die. Stupid, stupid media!

"ALL MIGHT!" (3)

His eyes widened as he looked back towards the chopper, he could barely make shape of a man trying his best to hold on.

"DON'T YOU DARE LOSE!"

Of course, the choice was clear from the beginning. Sacrifice innocents to defeat a monster? Never. Looking back down at his tentacled adversary, which had nearly finished charging, his smile became wider than it had before.

With a final look of assurance to the men behind, he shouted. "NEVER FEAR! WHY?"

Flashing his smile, he gave them one final thumbs up.

"BECAUSE I AM HERE!"

With that, he shot towards the beast, the flames of One For All burning so bright it made him look like a star even amidst the quickly-disappearing sunshine.

Brace…

The massive beam of pure destruction hit him at full force, forcing him to cross his arms in front of his face to protect his eyes. Of course, that wasn't enough to slow him down; the laser split into two with him in center, dissipating into the distance while avoiding the helicopter behind him.

All Might grunted through the pain; if he wasn't feeling it before, then he certainly was now. It felt as if every cell in his body was being shot straight into the sun, he could feel his skin peeling away despite mustering all the energy available to him to protect himself.

Just a bit longer!

The #1 hero showed no signs of slowing down, his body was still holding on and he was sure the monster was using the last of its strength as well.

Wha-

"ARRRRRRRRRGGGGGGGGHHHHHHHHH" A desperate cry of pain filled the skies as the burn doubled, tripled, and quadrupled in intensity, his skin burning off and revealing the blackening muscle fibers underneath. His hero suit may be completely shredded, but it only served to strengthen his will. (4)

CCCRASH!

All Might's body slammed into the monster's center eye, causing it to recoil in pain, stopping the attack.

This is my final smash!

Uncrossing his arms, All Might pushed the flames of One For All to its maximum, feeling it burn in his body while coalescing on his extended right hand. All the powers cultivated by his predecessors flowed within him, aching to be released once again.

Closing his fist, the entire shine from his body focused like a singular star on an everlasting night sky, before closing in on his target.

"UNITED!" The monster could do nothing as it felt the fatal force moving in.

"STATES OF!" Contact.

"SMASH!" Within a fraction of a fraction of a second, the force of thousand suns shot straight through the monster, blasting a hole in where its main eyes used to be, before sending it into the sea floor. The impact forced the surrounding waters to fly past the clouds as the sea was split for hundreds of miles. Monstrous waves exploded out with him as the epic center, surprisingly, the helicopter that followed him all this time evaded the brunt of the force.

Thank god… All Might's final thought trailed off as he felt darkness overtake him.

...

The entire world let go a collective breath of relief as the monster's demise was made to all. It was then, the camera cut out, the fate of their hero remaining unknown.

All over the world

Breaking News: All Might stands victorious! The world's #1 hero set to make a full recovery!

…

Cheers for All Might! Beacon of humanity! Slayers of monsters!

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The conclusion of the greatest battle of monsters since the age of the first hero! A decisive victory for humanity!

…

While it was indeed true, the scale of such a battle had not been seen since the days of the monster king, this only meant that powers that remained in the shadows for over 200 years have begun to stir.

All Might's victory may have brought the world of heroes into a Golden Age, but despite that, it was only a precursor. A precursor to a peace that would be short lived, for this battle was but the opening act, of a much greater and sinister plot.

For every man, woman, and child that saw their victory, a monster saw their defeat.

Monsters didn't like losing.

No, not at all.

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Chapter 1 Finished! Next Chapter - First Beginnings

Make sure you guys check out my other stories!

(1): I had Azathoth from Cthulhu Mythos in mind when I wrote about the monster (although not tentacle-y to that extreme). The actual Mythos series will be an existing franchise inside my BNHA world as well, and will surely be referenced with a real life eldritch being :)

(2): This is basically just a clusterfuck of every possible roar, screech, and scream imaginable. I think this is how the kids in the Fate fandom write Berserker's screams from Fate/Stay Night.

(3): Lots of parallels between this battle and AFO vs All Might, I'll be honest I basically finished the battle scene before realizing, oh crap there was the injured woman and a flying helicopter doing the same thing. However, I decided to keep it as it is because even with the unconscious inspiration, I feel the scenes are fine :D! Also, the way my story is going, as well as the change in premise, the real battle (if you could call what will happen one) between AFO and All Might will likely go very differently :)

(4): If anyone wonders if he's naked - yeah, he is completely butt naked when being carried off by the helicopter, and you got it! His All Mighty dick was hanging out past his knees XD

Special thanks to the dude that wrote Yesterday from Upon the stair, 'A beat' is SUPER awesome to use in describing dramatic pauses.

PM for questions about story please!

[ROTLB: The Birth of the Light Bringer]

[ROTLB: Light of the Fairies]

[Chef Ramsay]

[The Nothing Dragon Slayer's Misadventures in Earthland]

[Minipa's Trope Discussions and how not to suck shit at writing]

[A Noble World]

Don't read that Naruto/One Piece one, it's complete trash but I'm too much of a pusillanimous to delete it.

Like this to die instantly :)

Minipa, out!