Alright fellas, I have recently been watching Fist of the North Star/Hokuto no Ken and this idea came into my head, Izuku Midoriya Kenshiro! Yeah, you heard that right! A badass version of Izuku Midoriya! Let's find out how such a version of our protagonist will mess up with the story!

I do not own My hero Academia or Fist Of The North Star, please support the official release.

Smash of The North Star!

By: Confused Pharaoh

"That damn nerd…" That was the phrase that Katsuki Bakugou, the explosive teen most said in a day, he was mad, really mad, not because his middle school class colleagues kept pissing him off. But because someone was coming back, after 2 years missing, Bakugou received the news from his mother that Izuku Midoriya, the quirkless wonder was coming back from wherever he went.

It all started two years ago, where Midoriya disappeared. The first two days of school he missed didn't grab Katsuki's attention, the green haired boy probably got sick. But time flies and he was already two weeks missing, each day the teachers would piss Bakugou off when being asked information about Midoriya, Katsuki would answer he didn't know. And now, two months had passed and that nerd completely disappeared, and that start to give Katsuki a sense of worry about the quirkless wonder, not that he worried about him, but because he was pissed off about the nerd skipping classes. "Does he think he is better than me? Being able to skip classes and thinking you are all that cool Deku?! I'm going to punish that nerd so badly he is going to turn into a bloody pulp!"

When reaching the Midoriya household, Bakugou didn't believe the news he got, Izuku's mother, Inko Midoriya, was living by herself, where was Deku? He was nowhere to be found, luckily, the woman didn't know about the constant bullying Midoriya received from Katsuki and let him in and talked about him of the situation. Izuku Midoriya, the quirkless wonder, had disappeared. He ran away from home? Impossible, he wouldn't leave his own mother alone, something obviously happened to him, but now, he was finally coming back, Mitsuki Bakugou, his mother, had received a phone call from Inko saying that she finally found her son, and it was now time for Bakugou to make his 2-year awaited punishment.

"Oi Miss Inko where is that damn ner- I mean, where is Deku?!" Bakugou screamed at the front door of the house.

"Ah Katsuki! It is nice to see you! You came here to see Izuku, right? He's already at school!"

"WHAT?!"

Bakugou ran as fast as possible to Aldera Junior high, clenching his fist and entering the school gates, he was damn sure the quirkless bastard would be there, opening the door from his classroom and there he was.

"Deku…" Bakugou growled slowly.

Sitting in the chair, was a green haired teen, with his Middle School Uniform's sleeves completely ripped, revealing well trained arms that would probably take a lot of effort to make, his tight Uniform almost revealing bare muscles, he was now 5'9 tall, in this 2 year period, the quirkless wonder got really buff.

As soon as Izuku Midoriya heard his made-up name, he turned his head towards Bakugou. His face wasn't the same, it wasn't the hopeful, cinnamon roll looking face as before, his eyes changed, his freckles still remains, his messy hair was the same, and his eyebrows, were the same, but he looked… differently, somehow, his face showed a lot more bravery and something else.

"What the fuck happened to you!" Bakugou quickly ran to his "Old pal" and grabbed his almost ripped shirt, ready to punch him in the face and ask him all sorts of questions. And somehow, the "nerd" was not afraid of him.

"Release me." Was the words Kastuki heard, in a badass tone that Izuku made, like he didn't even care about him, he was completely calm, his menacing eyes was something to fear, but Bakugou wasn't going to let this bullshit get the best of him.

"What is with that look on your face damn it! Do you think you are actually better than me, huh!? After all these years you were missing, is this how you welcome me, Deku!?

"You are in no place to question my welcoming, Bakugou."

Bakugou? Since when did he started to call him that? His entire life he heard the quirkless bastard called him Kacchan, this was it, Deku forgot him, Kacchan was forgotten, he was now just Bakugou. That was it; 'Kacchan' was now pissed off.

When holding on his shirt, the uniform didn't last and completely rip, alongside his entire shirt, revealing his well-built muscles, but it wasn't his muscular body that got the entire class's attention, but the seven scars on his chest, that resembled the constellation of Ursa Major, what could that mean? Whatever it was, it was menacingly enough to force Kastuki to release Deku.

"What… happened to you…?"

Deku remained silent, the look on his face remained the same, he then picked another uniform that was on his bag and put it on, but they were still really tight.

The class flowed as usual, except for the whispers about Izuku Midoriya, he certainly was something to talk about, his buff body and different expression in his face, his mysterious seven scars and menacing face, all of these aspects were something Bakugou wouldn't even think to let pass, he was going to break that nerd's face today, no matter what.

XXXxxxXXX

Class was over, Izuku was picking his things when Bakugou approached him, this time, he wouldn't be scared enough to release him, he was still quirkless, he was still Deku.

"Oi… Deku…"

Midoriya looked at him with a stern looking face.

"DON'T MAKE FUN OF ME DAMN IT!"

Katsuki grabbed Izuku's shirt once more with his left hand, and with his right, prepared an explosion at his face, using the smoke of his hands to threaten Midoriya.

"So… Deku, you decided to disappear didn't you? Where have you been pal? I want to know! Tell me!"

As soon as Bakugou started to threaten Deku, some other classmates joined him.

"Look at him! He is so lame he can't say anything!"

"Cut it out Bakugou, he will soon start to cry."

"DON'T MAKE ME LAUGH!"

When Bakugou almost ignited one explosion, Midoriya grabbed his wrist with an extreme super speed, no one was able to see him grabbing his hand, and as soon as he did, a weird spark of blue lighting covered Bakugou's arm, and he immediately removed his hand from Midoriya's shirt.

"W-WHAT THE HELL!"

Katsuki couldn't feel his arm, it was like it was being controlled by something else, he couldn't use his explosions since Midoriya's power completely nullified his arm, but that was impossible, Midoriya was quirkless! He shouldn't have this type of ability.

As soon as Bakugou recovered his arm, he noticed Deku already left the classroom, whatever happened to Midoriya, he wasn't a quirkless bastard anymore.

XXXxxxXXX

Midoriya was making his way home, he didn't even think about what happened to Katsuki, what he thought of him, his face remained completely stern, he knew that 'Kacchan' would not consider him quirkless anymore, the only real thoughts in his head was to head back home, until…

"Heh! Aren't you a little buff for a kid? Well, that makes you an even more better hide spot!"

In seconds, a sludge monster freed him from the sewers and tried to grab Midoriya, however in an instant, Izuku jumped backwards perfectly and dodged the slimy monster.

"Huh? You really are good at dodging kid! But I can't allow that to happen!"

Each time, the sludge villain would try to grab the young man, but he failed, he was way too fast and had perfect reflexes, nothing would grab him.

This repeated itself for some seconds, until our young warrior decided to do something.

"HWAAAAAAAAAHH"

Izuku released a mighty scream, a blue aura flowed through his body, his muscles started to get swollen to the point his uniform ripped itself making him completely shirtless and revealing his seven scars.

In an instant, Midoriya started to send a barrage of punches towards his enemy, even if he was made out of slime, the pressure of his punches were able to release itself from the slimy monster.

"ATATATATATATATATATAH WATAAAAAH"

Deku stopped punching the slime monster, the last things that could be heard was the sound of the screams of the sludge criminal, however, the villain noticed something, these punches were not hurting! Not because he was made out of slime, but something else was going on.

The sludge villain quickly got up and made fun of Izuku's attack.

"You think this hurt? Your punches are like mosquitoes'!"

However, the reply was quite shocking

"You are already dead."

"What?!"

A weird energy sound could be heard from the villain's entire body, the slime on his body started to get swollen with an unknown energy, and then BAM! A load of slime covered the tunnel they were in, the villain completely blew up, even if he was made out of slime, he somehow… died.

北斗百裂拳, Hundred Rending Fists of the North Star!

Midoriya was about to resume his way to his home until he heard a… familiar voice.

"Hey Young Man… did you stop this villain by yourself?"

That unmistakable voice… was from All-Might! The number one hero of Japan! If this was the old Izuku Midoriya, he would stay fanboying to death, but right now the new Izuku Midoriya, was with a completely stern expression on his face, he wouldn't really care about pro heroes anymore.

"Yes, it was indeed me."

'He must have a really strong quirk to blow up this villain! This boy really has the guts doesn't he?' All Might thought to himself

Before All Might could offer autographs, Midoriya started to walk again towards the exit of the tunnel, but All Might interrupted him.

"Hey boy, are you planning on joining U.A.?"

The answer was quite pleasing.

"Yes. I am"

XXXxxxXXX

"IZU YOU ARE SHIRTLESS AGAIN!"

"My apologies, Mom"

"PLEASE STOP SPEAKING POLITELY TO ME YOU'RE MY SON!"

After Izuku Midoriya came back after disappearing, he changed at every single aspect, he now treated almost anyone politely, except for the ones that threaten him, after he came back, his mother, Inko Midoriya was getting quite upset with his new personality, he didn't smile anymore like he used to. It almost seemed it wasn't even her son, and despite all of that, the seven scars he came back shocked his mother, and now she deserved an answer.

"Izu, you have to tell me… what are these scars in your chest, why did you run away?

"Mom, these scars are a replica the Major-Ursa constellation , a "gift" I received for learning Hokuto Shinken."

"Hokuto… Shin…Ken…?"

"Yes, it's an old and powerful chinese assasination martial arts style that consists on-"

His mother immediately interrupted him.

"WAIT, ASSASINATION MARTIAL ARTS?! IZU ARE YOU AN ASSASIN?!

A brief silence took over the place, Midoriya didn't want to answer that question, it this 2-year period, he indeed killed some people, but he wasn't a bad person.

"Mom, in this world, power is everything, if you don't have it, you are worthless, but in order to protect these indefensible people, I must fight, and there are scum on these planet that doesn't deserve to live on it."

His mother was speechless.

"Are you still going to join U.A.?"

"Yes, I am."

XXXxxxXXX

It was past midnight, Izuku had a long time talking to his mother about the martial arts, but he never revealed one thing about where, or who he got that from,. Right now Midoriya was walking on the street, he couldn't sleep, not with the feeling that someone might be in trouble, and of course, his acts of vigilantism would finally start to spread.

"Hey babe, wanna have some fun?"

Izuku Midoriya heard a sick voice coming from an alleyway; it certainly looked like a molester of some kind.

"No thanks, I have better things to do!"

A polite feminine voice could be heard from the alleyway too, the female was probably the victim of the molesting.

"Oh? Talking politely, huh? But what better thing could you do at midnight?"

Another sick voice appeared, it wasn't just one person that was there, after Midoriya took a closer peek, he saw 4 men molesting a teenage girl with a spiky ponytail black hair, with a well-developed body for her age.

"If she's saying no, its no." A stern voice was heard from the voice of the messy haired teen, grabbing the attention of the 4 molesters.

At that point, the 4 molesters came aggresively straight at Midoriya's direction, obviously with violent intents

"And who do YOU think you are!?"

"We are going to kill you!"

"Don't make us laugh!"

"HWATOO" "WHAAATA"

Midoriya fisted and kicked each of the molesters one by one, all of them fell on the ground hurt, and the same effects happened, they weren't feeling any actual pain.

"Huh? You barely touched us! You are so lame!"

"Speak all you want. You're already dead."

"What are you talking about you mor- BLERHG"

The 4 molester suddenly blew up, their brains exploded inside out, they indeed were already dead, and there was blood everywhere in the walls. The spiky ponytail girl was shocked, the look of fear on her face showed how afraid she was of the young man, was he a villain? A vigilante? Only this individual would know.

"Are you okay?" The "vigilante" said in a complete stern and emotionless voice, the girl responded with fear.

"Y-yes, I am…"

Izuku turned and walked away, he wasn't a bad person, but he wouldn't let any evil scum get away with their actions.

And soon, 3 months had passed; Midoriya had done a lot of vigilante work, the name "The teen with the seven scars" started to grow popular around the city, a teen that killed criminals started to spread fear to crime. Right now, an evil organization got their attention focused on him, in a bar that shared many individuals. One with light blue hair and a hand covering his face, a man with a suit made out of mist and other ill intent faces as well.

"Kurogiri, I want this boy in our League."

"Are you sure about that? He seems to have a different ideal from us, we should contact-"

"Let me."

As soon as Tomura Shigaraki interrupted Kurogiri, he called his teacher.

"Let me guess young Tomura, you want the boy with the seven scars, don't you?"

"Got the words straight out of my mouth, Sensei."

"Young Tomura, due to his age and actions, he is probably joining U.A., let time answer when to call him for our league."

"U.A.? That bastard…"

XXXxxxXXX

It was finally morning, Izuku woke up and got up from his bed, day flowed as usual, the teachers asking him a lot of questions and hearing a lot of whispers of his classmates about the new vigilante being similar to Midoriya, but his reputation at school would prevent them from believing it. He had around 8 months to train and enter U.A., will he be able to keep his vigilante work alongside being a student at U.A? How did he get Hokuto Shinken? We'll find out more in the future!

Oof! 2.5K words for a first chapter, not much but this is already an achievement for me, I'll TRY to publish a new chapter every week so stay tuned!