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Anime Simulation System

Reborn in the MHA world with a system that allows him to enter simulations in the form of other animes. Shiro embarks on his journey to becoming strong... [Note: The worlds the MC goes to may be a bit AU. However it's no drastic change like gender bend... Only a few bits of detail, such as timeline. And other stuff you will soon find out... Also this is my first fanfiction, so expect some errors and dumb mistakes.] --- I actually ended up making a bunch of chapters for this... I just never released them... I may end up revising this in the future... Well, I'm going to release the rest of the chapters. They are most definitely tattered with grammar mistakes and bad plot progression. I currently have gotten to a standard of writing, which I like and shall be making a new story. A Hanma in the one piece world should be interesting...

NoFeetMan · Anime & Comics
Not enough ratings
22 Chs

School

'Class 1A...'

Shiro had already gotten his results back and had headed towards U.A. to enter his classroom. He barely got enough to get in as he found it rather boring and only destroyed what was needed.

As he reached the entrance, he saw a familiar green haired figure standing at the door nervously.

"You going inside?" The green haired figure stammered, before turning towards the person who spoke.

"I-It's you!?" He had found out about Shiro from All Might after the exam.

"The name is Shiro. You?"

Steeling himself Deku replied, "My name is Izuku Midoriya... B-but I'm usually called Deku."

Shiro smiled in response. A reaction which surprised Deku as he seemed different from the description All Might gave...

"Your nervous huh?" Shiro paused as he examined Deku's expression. "There is a simple way to overcome the feeling, Deku." Deku readied himself. This was information he needed to know. He whipped out his notebook at lighting speeds and looked determined.

Looking like a scholar Shiro spoke. "To overcome that feeling... You need to..." Deku started to sweat slightly in anticipation. This was a big problem for him, as he struggled with confidence all the time.

"You need to ov-" Shiro was interrupted by a deranged looking man in a sleeping bag.

"Your still not in the classroom yet?" The man muttered in a bored tone. "Looks like these students will be annoying..." He whispered.

This man was the underground hero Shota Aizawa, who is the pro hero eraser head. His quirk was to disable the ability of a quirk by staring at them. however a limitation was that it dried his eyes.

He stepped out of his yellow sleeping bag and entered the classroom. Gathering the attention of all the students. Shiro and Deku shared a look before following after him.

He picked out a PE uniform from his sleeping bag. "Listen up. Put this on and go to the field." He spoke with his bored tone still present. And the students blinked in surprise before continuing to do so.

After a quick change, the students were soon out in the testing area.

Shota Aizawa continued with a speech after most of the students showed their confusion at the current event. They thought they were going to do normal school activities...

"Bakugo, you finished at the top of the practical exam, right?"

"In junior high, what was your best result for the softball throw?"

Bakugo looked at his new teacher, thinking for a second. "67 meters."

In response Aizawa said, "Then, try doing it with your Quirk."

Bakugo moved towards a pitching area and held the ball in his hand. With an explosive roar he fired off his quirk into the distance.

"Die...!"

*BANG*

The ball flew far and Aizawa looked down onto his phone like device, which recorded the distance.

He turned towards the individuals and showed the score, which was 705.2 meters.

The students gasped as they saw the number.

"750 metres? Seriously?" Said a young man with orange hair, and a tinge of black hiding within it.

The students then showed their excitement, but in return Aizawa gave them some news...

"You have three years to become a hero."

"Will you have an attitude like that the whole time?"

"All right. Whoever comes in last place in all eight tests will be judged to have no potential, and punished with expulsion."

Everyone's mouth hung open, as the realised what he had said.

'Seems like everything is going to cannon...'

Shiro was bored. Very bored. This world didn't get 'juicy' until the later parts. He was thinking of leaving the school for a while and exploring some other interesting things.

Shiro stepped forwards as the other students watched him. Some students remembered this person as the guy on the roof...

"Aizawa. I'll go next."

Shiro stood in the pitching area and as he held the ball his muscles bulged. The PE uniform was showing his ripped and lean muscles as the peeked through the clothing.

*WHISHHH*

The ball was sent flying at supersonic speeds. A small shockwave emanated from the sheer power as the ball disappeared from sight.

Aizawa checked his phone and the result came up.

"1,900 meters... Not bad."

The students once again were in shock. Something that was becoming frequent...

The test continued with the ball throw and some basic attribute tests. There were some minor inconveniences like Deku nearly breaking his arm again... But learning how to use a single body part to channel the power of OFA. And Bakugo trying to fight Deku.

As the test finished Shiro followed Aizawa silently towards a secluded area near the test site. His good buddy All Might was engaging in a conversation with Aizawa.

"Yo! All Might." Shiro moved towards his friend who was dressed up in a yellow business suit.

Aizawa turned towards the figure briefly and looked towards All Might. "You know him?"

"Yes! A young man who will become a great hero!" All Might flashed his huge smile as he said this.

As this was said Aizawa started walking away, continuing from the conversation. "I will always cut those without any potential. There's nothing crueller than letting a dream end midway."

All Might and Shiro watched as Aizawa departed...

"Seems like an ok guy..." Shiro said.

"Yeah. Kind in his own way, but I don't think we could get along after all."

"So... Why are you watching suspiciously from behind a wall?" Shiro knew the reason, but asked anyways.

"My young successor Midoriya of course!" All Might replied enthusiastically. "Young Shiro. What do you think of him?"

Shiro thought for a moment before continuing. "He is doing well... For someone so accustomed to not having a quirk, he is adapting very quick."

As Shiro spoke, All Might noticed that Shiro knew Deku did not have a quirk. He hadn't told him this detail. "Shiro. How did you know young Midoriya never had a quirk?"

Looking like a sage Shiro responded. "Because... All Man. I can see the future."

A tick mark popped out on All Might's face as he noticed that Shiro was messing with him.

Shiro chuckled, before walking off and saying his final words. "All Might I'm going to leave the school for a bit. If anything interesting is happening just msg me."

Noticing what Shiro said, All Might rushed towards him wanting to speak more, but as he was about to touch his shoulder Shiro disappeared.

"What?"

***

A few days had passed and Shiro was wearing a simple t-shirt with some normal pants inside his apartment.

[Simulation Shop]

[One Piece - 10]

[Hunter x Hunter - 10]

[Jujutsu Kaisen - 10]

Shiro was looking at the system shop, deciding what simulation he wanted to go to.

'One Piece has a clear pathway, on getting stronger... I could learn a higher realm of swordsmanship, gain haki or get a devil fruit.'

He thought of the many benefits that were in the One Piece world.

'Hunter x Hunter has a versatile power system which includes the use of nen. It would also allow me to create a power unique to myself, which could be very beneficial.'

Hunter x Hunter was indeed a great choice, however he thought that currently the One Piece world was looking better.

'Jujutsu Kaisen would be a fairly good choice... If I go I could eat sukuna's finger and if I die, just restart the simulation until I survive... Could I be a cursed spirit?'

Thoughts ran through Shiro's mind. Being a cursed spirit would be a good choice and the Jujutsu Kaisen world had a lot to offer.

*BANG*

A loud noise brought Shiro out of his thoughts as his wall collapsed. A blue haired man, with multiple hands on his body including his face appeared.

'Tomura Shigaraki'

This was one of the main antagonists who appeared frequently within the series.

"Kuro." Tomura looked menacingly at Shiro.

Shiro also realised how Tomura called him 'Kuro' which was his underground alias.

"Come work for me Kuro." As he spoke in a flat tone, a purple mist appeared next to him.

"Kurogiri. Show him the money." A briefcase was pulled out of the purple mist and the misty figure opened it, showing a mass amount of money.

"This is 500,000. Now let's go." Tomura acted arrogantly as he turned towards Kurogiri.

They didn't know much of Shiro's strength as they were requested to grab him from Kyudai Garaki. A scientist that worked with them. Kyudai Garaki was one of the people who had frequently watched Kuro's fights and noticed some strange things.

A daunting aura slammed onto Tomura and Kurogiri as their eyes expanded. They looked around realising that Shiro had disappeared from his couch.

As they turned around they saw Shiro standing in an intimidating pose with his arms spread. He resembled Yujiro.

His hair raised, seemingly defying gravity and his eyes flashed with a devilish grin plastered onto his face.

Shiro decided to show these people their place, before joining them. He was a man who had fought the impossible. A man that had fought against 'The Ogre' damaging him seriously. He was a Hanma.

His pride wouldn't allow himself to be stepped on.

The aura intensified as Tomura and Kurogiri were frozen in place. Sweat seeming falling from Kurogiri's mist...

Shiro's muscles tensed and his shirt ripped. He reeled back his fist and threw it forwards into Tomura's face.

*WHIFF*

A large amount of wind impacted the apartment as some things fell over, and Kurogiri's mist struggled to stay.

The punch had stopped an inch from Tomura's face. Shiro's whole aura changed as his smile was replaced with a casual one.

He raised his finger and pressed it on his face, "Don't act arrogantly in front of me... Now let's go."

Quickly responding to his words Kurogiri's mist expanded and they were wrapped inside of it.

The individuals were teleported to an abandoned bar, which Shiro recognised as the league of villains hideout.

Kurogiri was now dressed in a smart outfit, and the only parts of mist showing were his hands and face.

Shiro took a seat at the bar and awaited Kurogiri who seemed absorbed by his thoughts.

Tomura was standing still, his eyes wide. He raised his hand scratching the side of his neck, causing slight marks to appear.

"Sh**Sh**Sh**Sh**..." He muttered in a deranged state and was soon brought out by a voice.

"Has the recruitment gone well?" A voice sounded from a tv that was in the room.

Kurogiri took the mantle to respond, "Yes, Dr. Kyudai we have successfully recruited Kuro."

"Great! It's a pleasure to be working with you Kuro. We shall meet soon!" An excited voice responded. Kyudai was quite the fan.

Kyudai was an expert on quirks and was a biological and technological genius. He had even created copies of quirks before...

The tv shut off, as silence permeated the atmosphere.

"So... I'll have some whiskey." Shiro then looked at Tomura, "Also is he usually like this?"

Tomura sharply turned around to Shiro, "Don't get ahead of yourself..." He then walked off slowly.

Kurogiri then whipped up a whiskey, as requested by Shiro. He showed extreme elegance as he did so.

Shiro took a swig and let out an exasperated sigh. "So, what's your name and why am I here exactly?"

"The name is... Kurogiri. My quirk is warp gate, which you have experienced yourself." He paused for a moment, then continued, "We are the league of villains. And tomorrow we are going to infiltrate U.A."

Shiro listened as he thought it would be quite fun stirring up some drama. A U.A. student showing up as a villain? It could be fun.

"Is that it?" Shiro quickly decided to be a villain for as long as he decided.

"Yes. There will be many people participating. Because you are a promising individual however, I can tell you a bit more. We will be testing a secret weapon..."

Kurogiri explained in a mysterious tone. Kyudai had given them a little information that he had analysed. This information included how Kuro was an individual who looked for fun... A different kind of fun from most people.

Because of this they saw he had potential to become a villain. And because Kuro fought for money, they decided to include some in their recruitment process, which went... Well...

Shiro stayed their for a few hours getting familiar with Kurogiri. He found him to be a fun man to talk to. The alcohol did nothing to Shiro because of his outrageous healing factor, which hadn't been revealed yet.

He never had to use it...

Shiro soon finished talking with Kurogiri and he asked to be transported back to his apartment. He was expanded in a purple mist and soon reached his home.

As Kurogiri left he looked around...

'My wall...' Flashbacks of his door in the Baki pierced into his mind...

Whiffing his thoughts away Shiro decided to finally get some sleep.

He jumped onto his couch and threw his ripped shirt off.

Then he slowly descended into slumber...