Disclaimer: I do not own My Hero Academia or Fate/Stay Night

...

The methodical knock on the door set Jiro, Bakugo and Momo on high alert, panic creeping in at the realization that they had already been found. Their reaction was swift as they braced themselves for whoever it was who could have found them. Surprisingly, the door to the apartment wasn't kicked in but rather it was knocked on again. The three teenagers looked at one another in a mixture of confusion and bewilderment, knowing full well that if their position was compromised then the hero on the other side of the door wouldn't have hesitated to make a move.

"Don't make me knock again."

The brightness that lit up on Momo's face was instantaneous, recognizing the person behind the door immediately. Before she could make any movements however Bakugo raised an arm to block her way. His eyes locked onto Jiro who nodded in understanding. While it may have sounded like their friend, the world of heroes and their quirks was vast. There was no telling if it was somebody with a quirk who was merely mimicking the sound of their companion, making them hear what they wanted to hear. There was just too much at risk.

The clean slice of a blade through wood startled them momentarily before the door fell apart, showing just who it was who has been standing there. While the act itself proved that it was indeed who they had hoped it was, the fact that he wasn't alone caused the three of them to remain on edge.

"Was that really necessary?" asked Eraserhead as the blade Shirou had used dissipated into nothing. Shirou didn't dignify his actions with an answer as he marched over the broken door. While his entrance had been bold, the look on his face was anything but. He looked somewhat glad to see the three of them, all of that while it was impossible to get any sort of expression out of Aizawa. What was clear though was that his quirk was more than likely already active and suppressing what the three of them could do.

That still didn't explain however why the two of them were here together in the first place.

Shirou made a small gesture for the the three of them to take a seat, the students of U.A doing so swiftly. The three of them crammed together on the single bed without a word of complaint as Shirou took a seat on a desk chair. Aizawa chose to remain standing in the corner.

"I've heard of what the three of you have done," said Shirou slowly, leaning forward as he placed his elbows on his knees. "While what you may have done might not have been the wisest of choices to have made, I am proud of the fact that you have been seeing your course through. It could have been very easy for the three of you to have doubted your path and given in."

"Thank you sir," said Yaoyorozu, her posture rigid as she accepted the praise.

"Now," said Shirou, his voice calm as he addressed his three pupils. "From a message passed to me from some mutual friends of ours, the three of you aren't searching for me but rather you've been doing your best to allow me to move without as much interference. On a tactical front, it is rather clever and well thought out."

"Thank you sir," repeated Yaoyorozu.

"Which is why you're going to be going back to U.A with Aizawa here," said Shirou, tossing a thumb over his shoulder at where the teacher was standing. His words however managed to catch not only the three teenagers off guard but also the professional hero. "After all, the three of you are only acting as you did because of the hypnosis that Rin had put on you before she left U.A. Had she not done such a thing, the three of you would not have acted like you had."

"But we weren't under any..." started Jiro before Bakugo elbowed her in the ribs, silencing her before she said anything that he found stupid. Sadly Yaoyorozu was too far away from where Bakugo was sitting to get the message.

"We did what we did because of the training that you put us through," said Yaoyorozu, placing a hand on her chest. "You taught us to strategize and act and we did just that. We did all of this because we believe in everything that you've taught us."

"It seems that Rin's hypnosis is rather strong after all, isn't it Aizawa?" said Shirou, addressing the professional hero in the room.

"It would seem so," grumbled Aizawa, clearly understanding what it was that Shirou was implying but not particularly liking it all that much. The damage that the three teenagers had done was not going to be forgotten anytime soon and while they could mitigate some of the damage that had occurred with the story of them being under hypnosis it wouldn't remove it altogether. Trying to convince a number of Heroes that this was what had actually occurred would be the hardest battle of all and one he was not looking forward to in the slightest. Which was also why he needed to try and get some manner of information as to what Shirou's end goal was to make this endeavor worthwhile. "You wouldn't happen to know anything about whether the League of Villain's member, the one known as Toga, is currently under any hypnosis."

"The opposite," said Shirou, finally looking over his shoulder at Eraserhead. "She has been somewhat of an experiment for Rin, to the point where all of her owies have gone, the doctor's words, not mine."

Aizawa's features scrunched up at hearing that. Himiko Toga was a killer and it had only been because of the injuries she had sustained that she was caught in the first place. Hearing that said injuries were now gone from the equation made her a very dangerous individual once again. At the same time though, neither Rin nor Shirou were idiots. They wouldn't have done such a thing for no reason at all, nor would they have done so without thinking through the consequences. This was a part of whatever plan they had in place and sadly, he could only think that he would have to wait to see what said plan was. As loathe as he was to admit, there wasn't really much he could do.

"So what now?" asked Bakugo, crossing his arms across his chest. "Say that all of this goes down as hunky dory as you make it out to be, you're still out there fighting a battle which you can't compete in at a hundred percent. You may have got your arm back but that doesn't mean you can summon weapons and such when you could pull some bullshit warrior from time and space. Who's going to protect you when you can't defend yourself?"

"While your concern is noted, you should know by now that even without utilizing my skills, I am still what many fear me as," said Shirou with a playful smile.

"And what do many fear you as?" asked Jiro, uncertain if she would like the answer coming her way.

Shirou's smile widened. "A force of nature."

...

"Get in," ordered Aizawa, instructing the three teenagers to enter the vehicle that was waiting for them. They begrudgingly did so, shuffling into the backseat with the knowledge that they had been given a chance when they had had none. Shirou was, by all accounts, rewriting everything and making it work in their favor. The three of them knew that, while they didn't have to like it, he was doing it for them.

As Aizawa got into the passenger seat, he couldn't help but focus on the fact that Shirou was effectively parading Rin around as this deity whose quirk they had never realized. In all fairness, nobody truly knew what her quirk actively did. As part of the General Studies department, she had done her thing without too much being monitored against her. Then in the school tournament, she had been able to prove that she was more than capable of hanging with Shirou and fighting alongside him, just from her movements alone. Her quirk however, well, it was difficult calling it a quirk at this stage, was near impossible to understand just what it was capable of.

She and Shirou didn't abide by the rules of the world, so theoretically speaking, anything was on the table. Rin had been more than capable of projecting Shirou's memories for all to see, and that was only a taste of the power she possessed. Truth be told, there was no real way of telling what the girl was capable of. It was because of that, and the real possibility that she could very well hypnotize someone, that the three children behind him would likely be attending class in the next week.

Looking into the side mirror, Aizawa could see the form of Shirou walking casually into the distance. Undoubtedly there would be a number of professional Heroes well aware of one of their biggest threats currently roaming the streets. Given how many criminals had been released onto the world due to the League of Villains destroying a number of prisons, it was unlikely that an agency would be able to pull together a full assault capable of bringing the boy down. How likely they were to succeed with such an assault was yet to be seen. All things considered, if a handful of agencies were able to track Shirou to his base of operations, he would call that a win.

As loathe as he was to admit, there was a lot that was out of his control that he was aware of. Shirou referring to himself as a 'Force of Nature,' was true given his powers. The teenager had been able to warp reality to his whim in a coliseum, changing the world around everybody to one where he was best suited for combat. In a one on one battle, Aizawa could only think of a handful of heroes who could even comprehend the situation they were in, and that was before a rain of swords fell upon them in a heartbeat.

At the same time however, if he was to go out and tell professionals to not do what they did for a living was akin to slapping them in the face. These were men and women who protected the world from criminals, day in, day out. They put their lives on the line in order to make the civilians safe in their community. They did that without hesitation, but even they knew their limits in certain situations.

This was a situation which many of them would not be prepared for, however confident they might be in being able to take down a single teenager. Most of them were unaware of just what he was capable of and rightfully so. Many of them would be aware of what he accomplished during the Sports Festival, purely for the fact that it was broadcast nation wide. What Shirou had shown there though was nothing compared to what he was capable of and as such, there were a lot of people who would try to apprehend him and consequently end up in the hospital. It didn't matter that Shirou was limited to what he could do on a grand scale, he was still more than capable of dealing with a majority of those who approached him with little more than a dagger. Which, given Shirou had summoned a sword purely to slice through a door, was consequently within his realm of possibility.

As they drove off, leaving Shirou outside of their grasp, Aizawa could only hope that he didn't do too much damage to the civilians belief in the hero system.

...

Shirou sat on the train, absentmindedly watching as the world passed by. He had taken a risk, understandably, but it was one that he had to take. Not taking it and allowing Bakugo, Jiro and Yaoyorazu to roam free could have led to disastrous results. It wasn't as if he didn't believe that they could look after themselves, they were more than capable of that. Of that Shirou was certain; they were his students after all.

The game had changed, something which was his fault for the most part. Had he not treated the League of Villains with kid gloves when he had first interacted with them, the world would be a very different place. Shirou knew that if he had properly dealt with the threat, as little as it was, at the time, then thousands of prisoners wouldn't have been set free from prisons to roam the streets. Had he dealt with the threat, civilians would not feel a looming threat hidden around every corner. Had he dealt with the threat, the students of 1-B would still be alive.

This was his burden, his fault.

Taking a deep breath, Shirou tried to push those thoughts to the back of his mind. It wasn't as if he hadn't had these thoughts and wouldn't have them again. Right now however he had to pay attention to the threats around him. He was on public transport filled with dozens of commuters going about their day. His face was one which was well known in an infamous way. Anybody on here could very well be taking photos of him and posting them onto social media, signaling for a hero waiting for any sort of notification to strike.

"Is that seat taken?"

Shirou was somewhat taken aback by the simple request coming from seemingly nowhere. While he was sitting in a seat with his back in the direction the train was traveling, the seat facing him was indeed vacant. Casually, Shirou gestured for the woman who had requested the seat to sit down. They gave him a casual nod of appreciation as they took their seat, the rabbit ears on top of their head remaining rigid and alert. Shirou could only assume that this was a byproduct of their quirk, rabbits were notoriously known for always being on high alert. That could very well have been the reason why they had asked if the seat was vacant in the first place.

As they took their seat, Shirou glanced around the rest of the train where the rest of the citizens were suddenly in two very different categories. It seemed that the younger generation had whipped out their phones and were currently pointing them at both Shirou and his new compatriot. The rest had decided to make their way to the furthest corners of the compartment. Clearly, according to the general populace, something was about to go down.

"So you're Shirou Emiya."

It really did seem like something was about to go down. "Point being?" asked Shirou in response.

"No point, I just wanted to see who it was that all the fuss was about," said his compatriot, flashing a predatory grin his way. This immediately sent warning signs to Shirou, given the woman in front of her had what he could only describe as a Rabbit quirk. An animalistic quirk which benefited the wielder by giving them some traits of the animal. For what was effectively a meager animal, for said quirk user to be treating him as if he was prey left a lot of questions to be answered.

"I see," said Shirou softly. "In which case, what do you want to talk about?"

"Oh, I don't want to talk," said the Professional Hero, squirming in her chair ready to go. "After all, I find it better to learn about somebody with actions rather than words."

"As much as such an interaction might be entertaining, I for one don't particularly want to destroy the railway system of this town. So unless you want to be footing the bill for the reconstruction of the railway line, you're going to have to be patient now," said Shirou casually.

The look of annoyance was far more entertaining than it had any right to be as Shirou sat there without a care in the world as Rumi Usagiyama, otherwise known as the Professional Hero Mirko, confided herself to the seat she was in. "Ryuko said that you were a character and I'm starting to understand why," she said.

"Did she say that before or after I shielded her from Endeavour's attack?" asked Shirou, recalling the time where he had shown off some of his strengths to a number of societies heroes.

"Both," said Mirko as she flashed a smile.

"I'm not sure if it's a good reflection on me if Ryuko has been talking about me as much as she seemingly has," said Shriou with a cheeky smile, almost reflecting that of Mirko.

"The two of us try to catch up once every couple weeks or a few drinks in our wind down period. Your name does get thrown around quite a bit. You made a good impact on her."

"I'll take that as a compliment."

"She also said you were dangerous."

"Well I thought that was a given by this stage."

"You know what," said Mirko, her knees clenched together as her fists practically bounced off of them. "Bringing you in is going to be somewhat saddening. I don't think my catch ups with Ryuko is going to be anywhere near as fun when you're behind bars."

Shirou considered his options at this moment in time. Given that he hadn't been attacked out of the blue gave him more of a chance than what he had expected. The woman in front of him was also showing some manner of restraint. While she hadn't wanted to attack him out of the blue, she still was irritated by the fact that he had trapped in the belief of the destruction of the railway line. The destruction of it was a real possibility but it was more the civilians currently sitting in the train who would be in the most danger. Given that the hero in front of Shirou was actively considering that raised their stake in his eyes. "Well, my stop isn't for another forty minutes or so," said Shirou, actively watching the deflation in Mirko's eyes as he said it. "So what say the two of us be civil and just talk until you try to arrest me and I try to resist arrest?"

Mirko's movements seemed to calm down, the readiness to pounce removed from her system as she relaxed in the chair behind her. Whether she believed he would be civil throughout the upcoming chunk of time remained to be seen, but she seemed to be willing to give him a chance. There was an understanding that they were in an area where if the two of them were to let loose, there was not telling if the bystanders would be safe.

Shirou knew that by not wanting to put the nearby civilians in danger gave him an aspect of time. Given his reputation, if he were to actively seek combat, theoretically, those nearby wouldn't be safe. Mirko seemed to respect that as she made herself comfortable. It was a small thing but it gave the two of them some manner of time before they unleashed upon one another, for that seemed the only true outcome.

"So does your Quirk make you a herbivore or are you still able to eat meat?" asked Shirou.

"Well, if we're going to casual about it, let me tell you," started Mirko as the train they were riding sped across the railway. However the conflict ended, for now, there was a sense of peace.

Both of them knew that it wouldn't last, but they were content to enjoy it for however long it lasted.

...

Hope you enjoyed.