Midoriya Izumi had always been an outcast to society ever since she was diagnosed as quirkless by a doctor at the young age of four. 

At first, she hadn't seen the problem with being quirkless. While Izumi found quirks absolutely fascinating and was admittedly a bit disappointed at not having one of her own to analyze, it's not as though quirks were everything, especially in Japan where one couldn't use their quirk publicly unless they have a license or are a pro hero. Besides, Izumi knew that there were plenty of heroes out there with noncombatant quirks, so she wasn't worried about whether or not she'd be able to become a hero. She would just have to work hard is all.

And working hard had always been the plan in the first place. 

It wasn't until she arrived home, and her mother told her father about her quirklessness that she realized things were going to be a bit more difficult than expected.

Her family and life had been a happy one. She had friends, goals, and parents that loved her more than anything. At least, that's what she had thought. That fragile thought broke the second she saw the normally gentle expression on her father's face contort into one of rage. She still remembered the ensuing fight between her parents like it was yesterday. 

It was like they didn't even take notice of her as she huddled in the corner, tears filling her eyes as she watched them argue and begin to throw objects at each other. It only escalated from there. 

To this day, she still wasn't sure how exactly it got to such a point, but one moment she was huddled in a corner, the next, she was screaming and writhing in pain as flames began to engulf her back and lower neck along with part of her left arm. 

The next few days went on similarly until one day her father just up and vanished. Her mother tried to tell her that he had just moved to America for a work opportunity, but she knew better. She could hear the tenseness in the woman's voice and see the growing disgust in her eyes, and that disgust only grew throughout the years. Soon enough, that disgust grew so large that Midoriya Inko could barely stand to look at her daughter, much less be in the same room as her. 

And so, this ended up leading to the woman taking more and more hours at work and spending as much time outside of their shabby apartment as possible. Meanwhile, Izumi, who was all by her lonesome, was forced to begin waking herself up for school, learn to cook her own food, clean the house, and far too many other things that she shouldn't have been forced to teach herself at only four. Eventually, she had to begin picking up little jobs around the neighborhood to earn money for groceries when her mother stopped buying food for the apartment. (Even those little jobs were hard to come by once those in the neighborhood found out about her quirklessness.)

It was okay, though. Izumi didn't mind the work. She tried to think of it as preparation for the future when she would be an adult and therefore truly on her own. Besides, her home life was nowhere near as horrible as her school life. School, for lack of better words, had become literal hell. 

Teachers who had once praised her intellect that was leaps and bounds above the rest of her peers now looked down at her with sneers on their faces. Every year, they would purposely lower her grades to the lowest passing grade possible so that they would be just good enough to move her on to the next grade but still way too low to show her actual abilities. To the teachers, she could barely even be considered a human, so what was the harm? They had already made up their minds that she would never make it anywhere in this world. 

If the teachers were horrible, then the students, Izumi's classmates, had to have been ten times worse. 

All of her friends had turned on her the moment the word 'quirkless' had come out of her mouth. Even Kacchan, whose real name was Bakugo Katsuki, had turned on her despite having been friends with her since they were infants. At first, her peers had only lightly teased and made fun of her, but upon seeing and hearing the encouragement that they were receiving from the adults, they continuously stepped up their antics year by year as they tested to see just how much they could get away with. 

Spoiler: they got away with everything. 

By the beginning of junior high, she was suicide baited daily, was tripped in the hallways, ambushed in alleyways after classes had ended on her way home, and there were even some that would use their quirks on her without a care in the world. (The main perpetrators of the last action were generally Bakugo and his gang of followers, because they couldn't really be called friends.) It was so bad that Izumi could barely even remember what it was like to not be marred in burned skin and scratches and bruises, and, while her mother never bothered to care about her injuries, she certainly took notice of how many uniforms Izumi seemed to go through. Izumi had tried to learn how to patch and stitch her uniform back together, but more often than not, her uniform was completely unsalvageable.

Funnily enough, the damage to her uniforms was what prompted Inko (Izumi wasn't allowed to call her mother anymore) to switch Izumi from Aldera to Kunugigaoka for her final year of junior high. Apparently, the constant bills and complaints that the woman had been receiving from the school had finally become too much, so she switched Izumi to a school that she thought would be able to keep such issues at a down low.

Honestly, Izumi hadn't been sure what to expect, but she somehow wasn't surprised when she had been placed into Class 3-E, the class infamous for rejects and outcasts,  immediately upon enrollment. What did surprise her, however, was that she was actually graded fairly at this school, and being among fellow rejects actually made it possible for her to make friends for the first time in years. Somehow, this was even more surprising than their teacher supposedly being the one who blew up over half the moon, which leads us to today. 

*****

It's nice that it's quiet for once, Midoriya Izumi, also known as our main character for this story, thought as she flipped through a book at her seat while the rest of Class 3-E sat tensely at their own. Though, the mood could certainly do with improvements. 

Of course, she understood perfectly why the mood is what it is. The class had planned out another assassination once again, and now, all they had to do was wait for their target to actually arrive to enact it. Personally, Izumi has absolutely zero interest in this plan. 

It's not that it isn't a decent plan, at least when you don't factor in the fact that the target can move at mach 20. She just doesn't want to kill their target.

It's as simple as that.

Despite said simplicity, many of her classmates don't really understand her unwillingness but respect her enough that they don't force her to take part in any of their assassinations. (It's funny how it took being placed in a class full of rejects and 'delinquents' to finally be treated as a human being.) So, when they finally heard what sounded like a meteor crashing outside and the sound of their octopus-esque teacher making their way to the classroom, nobody even questioned the girl that was, for once, the least tense person in the room. (Though, that may be in part due to the fact that they were too focused on calming themselves down.)

Izumi could hear the gulps that came from some of her classmates as their sensei and target stepped into the room and set the class attendance book on his podium. 

"Alright, everyone! Let's start homeroom shall we?" Their sensei started. "Whoever's on duty, if you would do the honors."

"St… Stand!" Nagisa, a short blue haired boy that Izumi actually got along surprisingly well with, spoke up to the class hesitantly. Almost immediately, the entire class stood up and everyone but Izumi pointed their specially made anti-sensei guns towards their teacher. "At attention! Bow!"

Izumi was the only one that actually bowed as the shootout began. 

"Oh my," their teacher said while dodging all of the bullets with ease. "Seeing as you're still firing, I'll just call to roll while you children wear yourselves out. Isogai-kun?" A voice muffled by the sound of gunfire rang out. "I'm sorry, but as we're in the midst of gunfire could you speak up?"

"Here!"

"Okano-kun?"

"Here!"

"Kataoka-kun?"

"Here!"

Izumi's lips tilted up in a slight smile as their teacher managed to finish taking attendance without being hit by a single bullet. Sure, she felt a bit bad for her classmates who were sulking tiredly, but she hadn't really expected anything different. Their teacher was just too fast after all. (So fast that even the number one hero was unable to catch up with him.)

It was honestly strange to think about why such a person would choose to teach their class of all things. 

Izumi could still remember the day that the overgrown octopus had become their teacher as if it was yesterday. 

It was the very beginning of their third year, and about seventy percent of the moon had disappeared mysteriously in an explosion. It was soon after that they showed up. 

****

"Nice to meet you. I'm the one who blew up the moon. I also plan to blow up the Earth next year. Seeing as I've become your homeroom teacher, I look forward to working with you!"

There are at least six things wrong with this picture, was the unanimous thought that went through the minds of all of the students as they stared incredulously at the octopus-like creature and the government agents next to him.

Izumi was pretty sure that she herself had blue screened at the abrupt introduction. 

"My name is Karasuma, from the Ministry of Defense, " one of the agents said, stepping forward as if the person that had apparently blown up the moon had never spoken at all. "First of all, I would like you to understand that what I am about to tell you is classified government information." 

Ah, Izumi sweatdropped nervously, this surely can't mean anything good. 

Classified information was rarely, if ever, very pleasant. 

Izumi would know. 

"Cutting straight to the point," Karasuma continued. "We want you to kill this monster."

Dead silence. 

So I was right… 

Classified information really is the worst sometimes. 

"Um… what?" Muramatsu asked the question that was on everyone's mind. "So that guy is some alien-looking villain dude that's come to attack us?"

"How rude!" The octopus? man? creature? seemed oddly offended. "I was born and raised on earth, you know!"

Of course, he was offended by the 'alien-looking' comment and not at being called a villain. 

Izumi silently wondered if she should be concerned about that. 

"I can't get into the particulars, but what he has told you is true." The 'born and raised on earth part' or the 'plan to blow up the moon part?' "This villain, who damaged the moon, will destroy the earth come next March." Izumi would admit, she didn't have the biggest of expectations about making it past junior high alive, but this was definitely not one of the reasons why. "The world leaders along with some of the top pro heroes are the only people who know about this. Before the world is plunged into panic, they are exerting considerable effort to kill him behind the scenes. 

In other words…" Karasuma brought out a knife that looked to be made of rubber and tried to slice at the so-called villain only to be dodged with ease. "An assassination." He continued speaking and trying to slash the villain with no name as Izumi's mind raced. 

An assassination. 

How was she supposed to become an assassin of all things? All her life, she had just been the worthless Deku, after all. Not even thinking about the fact that she wasn't sure she'd ever have the ability or skill to be an assassin, she definitely wasn't sure that she'd have the heart. 

All Izumi had ever wanted to be was a hero, somebody that helped and saved others. 

Not kill. 

Izumi wasn't an idealist. She knew that there were times where killing a villain as a hero was and would always be inevitable. That was just how things were. There isn't always a choice. 

This though…

This was different. 

Assassination was a choice. 

"At any rate," Karasuma continued to miss his slashes. "This guy is fast! Far from killing him, I'm having my eyebrows trimmed by him! Meticulously even!" Huh, Izumi thought, I wonder if he'd be able to get my wild and curly hair under control? "He is a super creature possessing enough power to transform a full moon into a crescent. His max speed is actually mach 20!" At that, Izumi's eyes actually sparkled because ohmygod,that'sevenfasterthanAllMight!That'sfarfasterthanthenecessaryspeedtobreakthesoundbarrierandisalmostasfastasthespeedarocketcanachieveonceinorbit— Yeah, her hands may or may not have been twitching for her her notebook and pencil. "In other words, if this guy were to run away, we would be helpless until the day of our destruction."

"Well," the villain started, the same smile on his face that seemed to be a constant. Actually, now that Izumi thought about it, his face kind of looked like a smiley face emoji. "That wouldn't be very fun at all, which is why I made a proposal to the nations of the world. I don't want to be killed, but if I become the homeroom teacher for Kunugigaoka's Junior High School, Class 3-E, then you're welcome to try."

"We don't know his goal, but the government reluctantly consented," Karasuma admitted. "Our condition is that he causes absolutely no harm to you students." Well… that's certainly reassuring… at least if you ignore the fact that everybody else in the world doesn't seem to be included in that condition… "Our reasons are twofold. As he will come to this classroom everyday as a teacher, we can observe him, and, above all, we'll have nearly thirty people with the chance to kill him from point blank range!"

At this point in time, the rest of Izumi's classmates had still been reluctant to participate in the assassination, and made it well known to Karasuma and the other government agents through their outcries. What made them switch their tunes was none other than the reward for a successful assassination. 

"The reward for a successful assassination is ten billion yen!" Karasuma told the class that went into shock once more. "It is more than an appropriate sum. After all, a successful attempt means the earth's salvation. Fortunately, this guy is looking down on you." Izumi looked on in curiosity as the villain changed colors and stripes ran across his face. Perhaps he really is a walking, talking emoji? "See, when the green stripes appear, it means he's mocking you!"

"It's only natural," the villain stated. "There is no way all of you will be able to kill me when the government couldn't. When they attacked me with a state-of-the-art fighter plane, I gave it a mid-air waxing instead." 

For somebody who plans on destroying the earth, he sure seems focused on maintenance. 

"In any case," Karasuma took over again as other agents began to walk in with racks and cases of what appeared to be weapons. "We'd like you to strike if the opportunity presents itself. We will provide all of you with bullets and knives which are effective against him but harmless to you. This must be kept a secret from your family and friends. Time is short. If the earth is destroyed, there will be nowhere to run."

"That's the long and short of it," their new teacher told them. "Now everyone! Let's spend the rest of the year in a meaningful fashion!"

And that was the beginning of Class 3-E's assassination classroom.