Prologue

Humanity. A race from ancient times, evolving in a Large ways, Shape, or Form. The Biggest breakthrough is the Birth of Superpowers.

From Simple Fire power, To Reality warping. These kind of Powers reshaped the entire world. From Religions, Ideology, And Racism. There's no more Feminism, or even Black discrimination, Now Power discrimination. If you're power doesn't fit their ideals, You'll be targeted.

Heroes. People who take the jobs are Professional Heroes, Those who protect civillians from Villains, Natural Disaster, and other kinds of Harm.

Many Schools and Association specializes in Heroics, training Young and Next Generation to be the next Pro Heroes. Two of them rules above

Hero Association. The Very first hero school in the world and The biggest. And UA, Most prestigious Hero school.

Supernaturals. People who evolved in 3 different ways. Devils, Angels, And Fallen Angels. Each having their own Strengths and Weaknesses.

Once you turn into one, It's impossible to turn back to Human. It's a One way trip to more power, or death.

To become an Angel. One must be faithful and Loyal to God, And once you're deemed worthy, You get the choice to become an Angel of God.

To become a Devil. One must be the Polar Opposite of God, With Satan. Or, Be born from the Ancestors of The first devils.
(Like Rias)

As for the Fallen Angel. One must become an Angel, then turn evil. God will cast Evil Angels to the underworld, Who will be converted to Fallen.

Each Country has their own ranking system of Both Heroics and Supernatural. And Humanity gets to decide who takes a spot, Nationally, and Internationally. As of Now, The one who stands ontop the Hero world, From Japan, And Worldwide, is All Might, The Symbol of Peace.

Due to the birth of Powers, Villains are also born. These kinds of People uses their powers for their Own desire, From Stealing money, Or Destroying civilization. This sparked the birth of Heroics.

There are 4 kinds of Powers. Emitter, Transformation, Mutation, And Magical. The first Three is exclusive to Humans, while Magical is exclusive to Supernatural.

Emitter is a Command-type that the User can do. Like Shooting out Ice walls, Breathinf Fire, Or Creating Winds.  Transformation is also a Command-type that alters the appearance of the User, and Increasing any of their Prowess in all sorts of ways.

Mutation is a Born-type. If a User has their quirk active, and can't be turned off, It's considered Mutation. Lastly, Magical is also a Command type that can be use in a Large amount of ways, From arcane to Destruction.

These Superpowers can passively affect the user, Mainly increasing their resistance in handling them. Like Fire power means Resistance to Fire or even Immunity.

One particular human has a Power no one can match if Used correctly. A Mutation power, Called "Limiter". It removes the Limits of Growth of the User. Meaning they have Boundless prowess.

And his name. Was Y/n Gushiken, Also known as Saitama. And this was his Journey, to become the Strongest Hero, and to find a Worthy opponent.

Y/n POV

Limiter...Yes, That's my power. I have no limits. But what do I use it for? Old Jobs? Heroics?

I tried applying for a Job. But upon hearing about my Life and Power, I got rejected many times.

During my Younger days at school. I was laughed at, By wasting a Powerful quirk like mine, Thinking they deserve it more than I do.

Right now. I'm walking down a street after yet another rejection. It was very predictable, I should probably start bothering.

I was so lost in my thoughts, that I didn't notice the Monster infront of me. Must be a Person with a transformation powrer, His Whole body except for his bottom are Crab parts.

Crablante: Huh? You sure you don't wanna run away

It said a bunch of noises I couldn't describe. I just sighed

Crablante: I bet you're a newly employed businessman already tired of work. I ate too much crab and turned into this, Crablante. Why aren't you running? You got a death wish or something? Is that it?

Y/n: Not really. I'm no businessman. I'm unemployed. Right now, I'm looking for a job. I had another interview today and got rejected yet again. I couldn't care less now, So I'm no mood in running, just because the mighty crablante appeared. So what if I don't run?

Crablante: *more noises* Then why not go Hero, Human.

Y/n: I don't feel like it.

It pointed its right claw at my eyes.

Crablante: You're eyes are lifeless, just like mine. From one set of lifeless eyes to another, I'll let you go.

It walked past me as I looked back.

Crablante: Besides, Right now...I'm hunting different prey... A big chinned brat, And when I find him. I'll rip his arms off.

I couldn't care. So I kept walking back home.

Timeskip

I kept walking until I came across a park. I heard a ball bounce, I turned my head and saw a Ball-chinned kid.....What kind of mutation is that? 

Kid: What're you looking at?

I had a worried face on as I remembered what the Crabby said.

Y/n: *thoughts* A big chinned brat... If he's caught, He's dead! *out loud* Hey, Kid. Were you messing with a big crab monster?

Kid: Huh? He was asleep in the park. So I drew nipples on him with my marker

A lightning effect ripped across my ears. I realized this kid was a dead kid walking.

Y/n: *thoughts* It's definitely him...He has no idea what he's done...What do I do? I could still help...But man, this kid isn't cute at all...But man, this kid isn't cute at all...Right. I mean, who really cares?

The kid continued playing with his ball. I soon started to walk away. When I heard a familiar voice. Crablante is back

Crablante: I found you!

It was about to kill him, until I instinctlively grabbed him out of the way, thus saving him.

Y/n: *mind* What the hell am I doing?

Crablante: Huh?

Y/n: Kid, He's after you! Get outta here!

Crablante walked to us. But I stood my ground

Y/n: Don't worry about me. Just go!

Kid: B-but...My soccer ball.

Y/n: Your ball?! *mind* Is this kid for real? All he is worried about is his ball.

Crablante stepped on the ball and popped it.

Crablante: Hey, What's the big idea? Don't tell me you're gonna protect that stinkin' brat.

Y/n: Come on, You're gonna kill him over some harmless prank? Think about this!

Crablante: *another sound* I've already mutilated lots of people. *points claw to his face* Whoever makes fun of the way I look pay the price. No exceptions. By the way, That brat drew nipples on my body. With a permanent marker! Look at these claws! *snips claw* I can't use a towel to wipe it off!

Crablante striked at my face. But stopped several centimeters away. 

Crablante: Get in my way, and I'll make sure you never go job hunting again!

Timeskip

I stood over a dead crablante, With its intestines pulled out. I improvised and used my tie to pull it. As I stood my ground as People watched the aftermath. 

Y/n: *heavy breathing*

Civilian: A hero!

Civilian #2: Congrats Hero! You saved us all!

As I looked at the body, Light emitted from my eyes. As I found my motivation, to become....

THE STRONGEST HERO