All Might vs Koro Sensei

All Might vs Koro Sensei is the twentieth episode of Fiction V. Fiction, featuring All Might from ***My Hero Academia***, and Koro Sensei from ***Assassination Classroom***.

## Interlude

Teachers usually get a pretty bad rep. Usually portrayed as the elderly that don't particularly care for the class they teach or their students. But we've all had that one teacher we always liked, the one that made learning interesting and not fully hate going to school for. But what if that teacher, was more than just an educator?

All Might

The Symbol of Peace and teacher of Class of 1-A, from My Hero Academia.

And

Koro Sensei

The world's top target and teacher of Class 3-E, from Assassination Classroom.

I'm Aipom and today I'm here to determine who between these two characters would win a match of Fiction V. Fiction!

## All Might

(Cue: Boku No Hero Academia OP FULL // Porno Graffiti - The Day)

One day, a baby was born different. Born with a meta ability. While there was discrimination at first, it wasn't too long until these meta abilities were called quirks and normalized into our normal world, forming a society of heroes. But when there's heroes, there's also villains. Villains with similar supernatural abilities as heroes.

One villain, Shigaraki, who would eventually be known as One For All, had a quirk that allowed him to take other people's quirks and either use them himself or give a quirk to another. He used this quirk to make loyal servants, but wanted to help his quirkless younger brother, Yoichi Shigaraki. But when Yoichi didn't want Shigaraki's help and saw through the damage he was creating, Shigaraki forcefully gave Yoichi a stockpiling quirk to make his submit. However, Yoichi already had a quirk that allowed him to transfer over his power to others. When these quirks combined, they created the quirk One For All. This quirk got passed down to others to defeat All For One for good, eventually reaching a once quirkless man who would eventually defeat All For One, Toshinori Yagi.

When Toshinori was just a teen, crime was running rampant thanks to All For One. He ended up meeting the pro-hero and current inheriter of One For All, Nana Shimura. Toshinori wanted to create a world where everyone can smile, and live happily. He believed that he could be a pillar to inspire others, to help people and keep them safe. Nana saw a fire in Toshinori and passed down One For All to him. This allowed for Toshinori to become the Symbol of Peace, with a bright smile on his face to let everyone know they're safe. Toshinori had become the Number 1 Hero, All Might!

Trained under Nana and another pro, Gran Torino, All Might would quickly climb up the hero rankings to the number 1 place, making his debut by saving 100 people in under 10 minutes during an accident.

All Might even has his own iconic signature moves, like any good hero would. All named after the places from the United States for when he went over seas to train. Detroit Smash can kick up a tornado and even changed the weather, Missouri Smash acts like a karate chop, Carolina Smash is a duel chop, New Hampshire Smash knocks him backwards, California Smash is a somersault with a punch, Oklahoma Smash turns himself into a tornado, Nebraska Smash whips up a tornado, and you can't forget the ever so iconic Texas Smash!

Though of course, having One for All meant that he'd one day have to go up against All For One. And when that day came, he wasn't ready. Nana had to sacrifice herself, with All Might swearing he'll avenge his fallen teacher.

Years later, All Might would eventually have a sidekick that was his number one fan, Nighteye. And when All Might was brought face-to-face with One For All once again, he was able to defeat One For All. However, at the cost of irreparable damage to his body that limited how long he could be the Symbol of Peace everyone knew him as. Nighteye, with the power to see into someone's future, warned All Might that if he kept up this hero work, it would lead to his death.

However, All Might didn't step down. Instead, looked for a successor at the top hero school that he attended, U.A. High School. Becoming a teacher while still continuing his time as a hero. Though every battle wore down how often he could continue protecting others.

Though don't get it twisted. All Might defiantly didn't become a pushover. All Might was still fast enough to rundown a massive stairway in half a second, traded blows with Nomu, and was even able to hit Nomu hard enough to send him blasting off again. And this specific Nomu was genetically made to counter All Might, having a shock absorption quirk.

And even in All Might's past, he was able to punch the Tokyo Sky Egg into the air and react fast enough to destroy three missiles with the wind pressure from his fist. And while these feats do come from the Vigilantes spin-off manga and the Two Heroes movie, they are canon to the original manga. Vigilantes is a prequel to the main story, and Horikoshi himself confirms that Two Heroes is canon, likely including the following films since they're referenced in the manga. Unlike when All Might teamed up with Deadpool.

But with in mind, let's take a look at when Midoriya and Bakugou during their final fight against Nine. When Bakugou temporarily had inherited One For All, the two of them were able to create a Detroit Smash that destroyed Nine's storm above an island. This feat was done with them both at 100% with One For All, so let's keep that in mind. Measuring the size of the island and the beam, as well as dividing it in two given that this was from both Midoriya and Bakugou, One For All's power at 100% should be at least 748.01 megatons of TNT at least.

This isn't even the best All Might has shown off, either. Because eventually, All Might would have to come face-to-face with the man that murdered his master and the man One For All was made to fight back against, All For One.

All For One was weakened, too, but he was no pushover. And All For One could even notice how much All Might was falling behind. Their clash destroyed multiple city blocks and All Might even agrees with One For All that he's not a perfect teacher. But All Might still had a duty as both a teacher and as a hero to protect his students and civilians. He had to go further beyond. All Might had to go Plus Ultra. Finally, defeating All For One once and for all with his own signature United States of Smash!

The small spark of One For All left in All Might may have gone out, but he was able to avenge Nana and defeat One For All. While he had to retire and step down from the number 1 hero, All Might was able to find a worthy successor to inherit One For All in the young and originally quirkless Izuku Midoriya. His torch may have been passed down, the legacy of the Symbol of Peace will never die.

(Cue: BEYOND PLUS ULTRA)

## Koro Sensei

(Cue: Assassination Classroom Opening 4)

Ever caught yourself screaming, "I could just kill that teacher"? What would it take to justify such antisocial behavior and weeks of detention? Giving you an "F" on a quiz? Mispronouncing your name during roll call... again? How about if you were being payed a cool 100 million from the Ministry of Defense because your teacher did something like this.

One day, for no apparent reason, over 70% of the moon was destroyed. What caused it? Why did it happen? Who could do such a thing like that? Well, the thing that did such a thing like that can be found at your local top tier school teaching one of the classes in the mountains. The creature that did this was designated to teach at a school to train the kids to assassinate him, and this creature would be called by his students, Koro Sensei.

Little is truly known about Koro Sensei. His origins are an absolute mystery. What is known is about Koro Sensei is that he's listed at moving at Mach 20, he looks like a mutant octopus, he has a real sweet-tooth, and that he can only be harmed by anti-him weapons. Mainly these BBs and flimsy knives. They're pretty harmless to humans, but they'll cut through him like a knife through warm tofu. Not much else can really harm the guy. Even regular guns and bullets will just melt inside of him. His name is even a play on words, translating to Unkillable Teacher.

But if the government couldn't even kill Koro Sensei, why did they think that a bunch of middle schoolers could? Well, they didn't. Koro Sensei actually negotiated that if he can teach the students in Class 3-E at Kunugigoako Junior High School, he would teach them to assassinate him by the end of their school year. Not a single government in the world really had a choice to not accept his terms.

They didn't know why Koro Sensei wanted to teach at this specific class. 3-E, also known as End-Class, is a classroom filled with doomed to be dropouts. Shunned by the main building and even set up in a remote mountain miles away from the main school building. Their fellow students mocked and looked down upon them, whether they were in the class for bad grades, their behavior, or breaking the school rules. It's immoral, but effective to keep students in line. But despite being the number 1 target by the world and being a unknown by the public, Koro Sensei was the best teacher these kids ever had.

Depsite looking dumb, Koro Sensei is a genius and knows exactly how to motivate his students. He can see right through his artistic student's disguise, knows the ecosystem of the mountain like the back of his tentacle, and memorized every problem set in existence in Japan.

And how Koro Sensei's body works is nothing but bizarre. The guy has the nose of a bloodhound and can zoom in for enhanced vision. He can even shed his skin to absorb an explosion. He's accurate enough with his shedding to save this woman when the explosion was not only strong enough to destroy a wall, but was activated by a grenade between her breast.

There's also a slime that his body naturally produces. This slime can become thick enough to catch a bullet, turn a bath into jello, and even replace cells.

And like real life octopuses, Koro Sensei can change the color of his skin. He can use it to blend in with his enviroment, make specific colorizations, but often his colors change depending on his emotions. Red is angry, green stripes is when he feels superior or cocky, pink is relaxed, pitch black is pissed, you get the idea.

But his tentacles are the most dangerous. He doesn't even know how many tentacles he has. But he can turn the tips into drills, stretch all the way across a classroom, turn them into a giant net, block dust while flying at Mach 20, create clothing. And he absolutely loves using them for beauty reasons. Gotta give him credit, Koro Sensei is good at it.

He's definitely considered a threat for a reason. He can catch a missile, survived a missile and returned it after kindly putting it back together, react fast enough to block several bullets from an assault rifle just a few feet away, and can regrow any tentacle seconds after losing one.

But there's one thing we should figure out. Exactly how fast is Koro Sensei? Sure, his marked speed is Mach 20, but he's definitely faster than that by the end of the series. He's fast enough to casually make 3 visual clones, and he's continued making more as the series progressed. Even early on in the series it was stated that he might be getting faster. These visual clones are a good way to figure out how fast Koro Sensei is, which we'll be looking at when the class was studying for the second semester midterms, when he made the most visual clones that are actually visible. While it's impossible to get an exact number of visual clones, we can take a rough estimate. Using that first panel with Hara, and assuming all those visual clones are to help with her, and remove her and the speech bubble from the image, we can get 34 visual clones. Assuming that Koro Sensei has 34 visual clones for all 28 students, that means he can make 952 visual clones. Meaning that Koro Sensei can move around at Mach 718.38, all while teaching 28 students multiple subjets.

This isn't farfetched, either. He was fast enough to catch an entire pot of soup with an eye drop before it had a chance to touch the ground, while putting Karma in an apron and adding some sugar in the process. He can even move so fast that he's avoided raindrops in a storm and spun around so fast he made a tornado just to teach the class a lesson about not being prepared for their futures.

Though of course, the class would have gotten close to successfully assassinating him. So Koro has a few trump cards for emergencies, like shedding his skin and this liquid form. But he also has his Absolute Defense Form. Surrounding himself in crystallized energy, he may not be able to move, he's impervious in this form. Not even a nuclear bomb could scratch him. The Absolute Defense Form even can create this explosion from the transformation.

He's weaponized this energy into a type of energy projection. This energy is strong enough to bust out of this structure that had him surrounded by BBs, iron plates, water, and concrete. He can even concentrate his energy into his tentacles to form a beam. Not only did this beam destroy this anti-Koro tent and shatter the windows to a nearby building. This same tent was stated to be able to withstand a tank at full power.

Though when you have a bounty of 10 billion yen on your head, of course you'll be a prime target for any assassin. From psychopathic soldiers to everyone's favorite bitch. Even the world's greatest assassin, The Reaper, tried his hands on Koro Sensei after being quite for awhile. He's even been up against students that, plot twist, had tentacles like his.

He's been forced to take blows from these tentacles, with Itona's being able to easily destroy a semi. And Itona even stated that Kayano was much stronger than him.

These tentacles would've driven them both mad if they weren't removed. Itona had these tentacles implanted so he could become strong, however Kayano implanted these tentacles herself in order to get revenge on Koro Sensei for killing her sister almost one year ago.

This is when Koro Sensei basically had to finally answer a question he's been avoiding up until now, out of fear that it would change his relationship with the class. But all along, Koro Sensei use to be the world's greatest assassin: The Reaper.

Born in an unknown country, he grew up in a corrupt slum where anyone could betry anyone with almost no reproductions. Having no name, family, nor birthday, he became an assassin, and was damn good at it. To the point he was given the name, The Reaper. He always pulled off a job with no failures, leaving no evidence that he was ever there, and his identity being completely unknown. Though one day when he assassinated a wealthy business man, this guy's son witnessed the work of The Reaper.

Though instead of being sad about his dad's death, he was in awe at The Reaper's talents. This is when The Reaper took him in as an apprentice. But while The Reaper was the most intelligent and dangerous man alive, he wasn't a good teacher. He instilled fear and respect, showing that no matter how good the kid got, he would always be better, viewing him as only a tool instead of a student.

This is when the kid betrayed The Reaper, turning him into the government while on a mission and taking the title of The Reaper for himself.

This was when Kotaro Yanagisawa took The Reaper, and used him as a guinea pig. Yanagisawa's goal was to make large amounts of anti-matter using the growth of human cells. But in this lab is where The Reaper also met Kayano's sister and arrange fiancée to Yanagisawa, Aguri Yukimura.

Aguri, the teacher to 3-E with weird tastes in shirts, was abused by Yanagisawa. But she was assigned to keep a close eye in The Reaper because she was viewed as expandable if The Reaper were to break out.

The Reaper and Aguri would bond, with The Reaper teaching Aguri some things to help her teach the students, and Aguri teaching The Reaper comparison.

Of course, Yanagisawa would keep up his experiments of The Reaper, with the experimentation causing The Reaper to start gaining tentacles. Yanagisawa would also do the same to a lab rat and was put on the moon.

But over the course of a year, the two would become friends and grew close to each other. The Reaper becoming more human than ever, despite his body changing and his fingers becoming more noodly.

However, on the first anniversary of the two meeting, the rat that had been planted on the moon for the same experiment of The Reaper had imploded and destroyed 70% of the moon because of the anti-matter.

This was when they found out that the same thing would happen to The Reaper in exactly a year and would take the world with him.

Learning that he was fated to die, The Reaper went on a rampage and escaped his prison. And he would've destroyed the whole city at the very least if Aguri didn't snap The Reaper back to his senses, but at the cost of her own life.

If Aguri didn't die, The Reaper would've gone on the end the world. But his love for her brought back his humanity, despite no longer really being human.

In her dying breaths, Aguri asked The Reaper to promise her that he'll teach class 3-E, to give those students another chance with his talents in teaching.

The tentacles asked The Reaper what he wanted to be. The Reaper wanted to be weak. A creature that appears helpless. Something so ridiculous that you want to just squeeze him to death! Something that can suss out the vulnerabilities in other creatures with its tentacles. That can protect them, and lead them. That was the creature- the teacher he wanted to become.

So Koro Sensei never blew up 70% of the moon. And he is filled with weaknesses, with Nagisa taking notes on all of his weaknesses, 40 in total.

While some weaknesses are more minor, like being a sore loser, motion sickness, and loving gossip. However, some can be very well lead to his downfall if he's not careful. Shedding and regenerating slows him down, holding down his tentacles can stop him from moving, and that losing a tentacle will reduce his speed by roughly 20%. Even water can slow him down. And then the most dangerous weakness, the most viscous beast known as boobs!

However, there is one huge weakness Koro Sensei has, being his heart. One good enough hit can kill him, though this is easier said than done. Kayano was able to stab his heart and he survived it, after all.

Though of course, after learning about Koro Sensei's past, they wanted to see if they could find a way to keep him from detonating. He was the best teacher they ever had, giving them the best opportunity they've ever had and got them to surpass the top students in 3-A. And after a paintball fight and a trip into space, they were able to find that Koro Sensei had a less than 1% chance of self-destructing.

Things were looking up for Koro Sensei, but of course, life has other plans. Because throughout the entirs year, the governments of the world were building the ultimate assassination attempt, with Yanagisawa taking the new Grim Reaper and using him as an experiment after his defeat.

Overnight, right before the graduation ceremony, an anti-sensei barrier made of light completely surrounded the 3-E building, with an anti-sensei penetrating laser satellite aiming right at the building. The laser did fire, but Koro Sensei was able to dodge this beam of light. While he did get scratched by it, he was still able to dodge it. One of the members running it even said that it traveled at the speed of light.

But Koro Sensei wasn't out of the woods yet, because they were preparing another beam. And in the meantime, Koro Sensei had to deal with something he tried avoiding the entire time, a fight he knew was inevitable. When he had to fight his old pupil, Reaper 2.0.

Reaper 2.0 was built to be twice as strong, and twice as fast as Koro Sensei after getting similar treatment to Koro Sensei and Itona. Being pitch black, with Yanagisawa even stating that this state brings out their full power.

But at the end, using all of his emotions and colors of his past, he made a pure white mass of energy to create a beam, giving his original student that just wanted Koro Sensei to notice him, a peaceful graduation.

But this was the end for Koro Sensei. The government would kill him by midnight with one last beam. He was too tired, and had no way of escaping his fate. But with all his students there, he gave one final roll call before being assassinated by the class that he spent his final year with.... damn it, I said I wouldn't cry...

He couldn't get to live on, but what Koro Sensei did for those kids will be underlooked. He gave the class everyone gave up on a chance they never would've had. His legacy will always be remembered by them, and he'll never be forgotten.

(Cue: Assassination Classroom - The Koro Sensei Drawing Song)

## Fight

(Cue: Assassination Classroom Soundtrack - Bokutachi no Yuujou)

(It's a beautiful day at the park. A light breeze pushing around the leafs within trees, the sounds of birds chirping can be heard, and the sunlight glistens atop a pond peacefully resting in the park)

(All Might, in his true form, sits on a bench at the park)

(A few high schoolers walk past, chatting with each other on this beautiful day, with one waving to All Might as he waves back)

(He looks around, as if he's expecting someone to come by)

All Might: I wonder what's taking him?

(Soon after All Might's comment, a large gust of wind suddenly hits All Might)

(He looks up, seeing Koro Sensei up above him with an ice cream cone filled with green tea ice cream)

All Might: Ah, there you are.

Koro Sensei: Sorry I'm late. I just couldn't resist!

(He quickly finishes his ice cream as the two begins their conversation)

Koro Sensei: Thank you once again for meeting me out here, All Might.

All Might: It's no problem. But what did you want to meet up with me for?

(All Might asks as Koro Sensei sits next to him)

Koro Sensei: Well, I thought it'd be interesting for our students to maybe teach each other a few moves for fighting. Your class always seems to be up to some action, and could teach my own students a few things I wouldn't be able to.

All Might: Oh, really? That doesn't sound like a bad idea. And your class can teach about how to move like an assassin?

(Koro Sensei's face lights up to a peach color, with an orange circle around his face)

Koro Sensei: Bingo! And I thought that if I had a little spar with their Symbol of Peace, I can get a much better idea than just reading about it.

All Might: Hmm, okay. I'm down for doing that. Though don't expect me to go easy on you, Koro Sensei!

(All Might gets up, transforming into his muscular and well known hero form)

(Koro Sensei's face suddenly changes to green stripes as he quickly dashes from the bench to across All Might)

Koro Sensei: Oh, I wasn't expecting you to go easy! Though that is if you'd be able to even hit me.

(Cue: 02 Jet Set Run - MY HERO ACADEMIA 2nd OST 1)

(All Might laughs, shining his heroic smile)

All Might: Let's see if I can!

(He lunges towards Koro Sensei, his fist realed back to throw a punch)

FIGHT!

(Seemingly, All Might lands his punch, but soon Koro Sensei vanishes from where he was standing)

(Appearing behind All Might, having green sprites and laughing)

(All Might looks at his fist, his nails painted pink)

Koro Sensei: Seems like you're just a bit too slow. Had enough time to do up your nails. I think pink suits you well, don't you?

(All Might looks back at Koro Sensei, giving off a laugh)

All Might: Gotta say, you did a good job. But let's see how long you can keep your distance!

(All Might lunges once more at Koro Sensei with a punch, but Koro Sensei dodges while keeping up his green stripes)

(He unleashes a fury of punches onto Koro Sensei, but Koro Sensei keeps avoiding them)

All Might: Nebraska Smash!

(He throws another punch, with a tornado forming around his punch)

(Koro Sensei gets sucked into the tornado, starting to panic)

(Landing his hit, he strikes Koro Sensei into the air)

(All Might jumps up after Koro Sensei, but Koro Sensei is able to catch his cool just in time to quickly escape All Might)

(Koro Sensei lands back onto the ground, All Might quickly turning around in the air and throwing another punch)

(After taking a quick look up to see All Might, Koro Sensei dashes away)

(All Might strikes the ground, leaving a mark on the pavement walkway by a bench)

(He looks around, Koro Sensei surrounding him with visual clones)

Koro Sensei: Over here! I'm right here! Here I am!

(Koro Sensei spams All Might with comments all around him, All Might looking around to figure out what to do)

(While All Might is distracted, Koro Sensei starts to repeatedly strike All Might, quickly hitting him before hiding back in the platoon of visual clones several times)

(After a few hits, All Might starts to feel a pattern as Koro Sensei attacks)

(Quickly, All Might spins around as Koro Sensei tries an attack from the back)

All Might: Texas Smash!

(In shock, Koro Sensei gets quickly tries protecting himself with his tentacles)

(All Might strikes Koro Sensei with his Texas Smash, sending him flying dozens of meters across the park)

Koro Sensei is able to slow himself down with his tentacles by piercing them into the ground)

(He looks at the tentacles he used to protect himself with, with the top halves of them missing)

(Catching up with Koro Sensei, All Might notices Koro Sensei's tentacles)

All Might: Looks like that one did a good number on you!

Koro Sensei: Oh, it's nothing but a scratch.

(Koro Sensei grins as his tentacles regrow)

Koro Sensei: Seems like you're as strong the news makes you out to be! But I think I'm still faster!

(After that last comment, Koro Sensei dashes out of All Might's sight)

(All Might laughs before quickly spinning around)

All Might: Not this time!

(He throws a punch, expecting Koro Sensei to be there)

(Only he's met with a visual clone of Koro Sensei, as the real Koro Sensei attacks from behind)

(He grabs All Might by the arms and heads into the air)

(A mach cone forms around Koro Sensei as he flies up, All Might trying to escape)

(They reach high up into the air, far above the park trees with a view of the city starting to form)

(Dozens of feet into the air, right as All Might begins to loosen Koro Sensei's grip, Koro Sensei spins around and throws All Might)

(Plummeting towards the ground, All Might pulls back his fist)

All Might: New Hampshire Smash!

(He throws a punch before hitting the ground, launching him backwards back at Koro Sensei)

(Catching Koro Sensei off guard, All Might turns around and raises both fists into the air with each other)

(He slams his fists down onto Koro Sensei, who protects himself with multiple tentacles)

(Koro Sensei crashes onto the ground, trying to get away)

All Might: Not this time! California Smash!

(All Might does several somersaults before throwing a punch)

(But Koro Sensei was able to escape in time, All Might striking the ground once again and creating a crator in the ground)

(Cue: 17 Sanmiittai - MY HERO ACADEMIA 2nd OST 2)

(Deeper in the park than before, trees surround them with a few birds flying away)

(Koro Sensei goes around All Might at mach speeds, beginning to kick up a tornado)

(All Might starts to get lifted into the air, with the tornado starting to lift up All Might)

(Looking around, All Might tries to find Koro Sensei and a way to escape the tornado)

All Might: New Hampshire Smash!

(He punches in front of himself, sending him backwards)

(But Koro Sensei slows down, the tornado down as All Might escapes it's grasp)

(But as soon as he does, Koro Sensei is right behind him, wrapping his tentacles around his arms before throwing All Might through trees)

Koro Sensei: Not wise to use a move you already used in the same fight. A good assassin can perfectly read your attacks.

(He floats back down to the ground, his face purple with a red X over it)

Koro Sensei: For the number 1 hero, I'd expect better from you!

(All Might gets up and laughs)

All Might: You're right, I'll keep that in mind!

(Koro Sensei dashes towards All Might, but All Might grabs a tree and swings it into Koro Sensei)

(Making contact, Koro Sensei gets launched backwards into the air)

(But he catches himself in the air, making a quick u-turn back to All Might)

(All Might throws the tree at Koro Sensei, but Koro Sensei dodges as he jets even faster to All Might)

(All Might pulls back his arm before throwing a punch)

(But Koro Sensei turns his body into a liquid, ducking underneath All Might)

(He transforms back behind All Might and tackles him, pushing All Might forward at mach speeds)

(All Might digs his feet into the ground to try slowing down Koro Sensei pushing him)

(But Koro Sensei throws All Might into the air, then concentrates energy into his tentacles)

(All Might turns himself around to face Koro Sensei)

(He sees Koro Sensei charging up a beam from his tentacles before firing it, blasting energy at All Might)

(Realizing he doesn't have a chance to dodge, All Might puts his arms up in front of himself to protect himself)

(The beam of energy sends All Might back, crashing onto the ground with parts of his sleeves burned up)

(He gets back up, Koro Sensei heading straight towards him)

(Just in time, All Might jumps out of the way as Koro Sensei dashes past him)

(Koro Sensei loops back around, flying right back to All Might)

(All Might lunges towards Koro Sensei, making an X with his arms)

All Might: Carolina Smash!

(As All Might throws a duel chop, Koro Sensei tries stopping himself and backs up to try avoiding the duel chop)

(When All Might swings his arms, he just barely misses Koro Sensei as two large gusts of winds bursts behind Koro Sensei)

(But All Might takes the chance to punch Koro Sensei, striking him in the head and causing Koro Sensei to go flying)

(After getting struck on the left side of his head, Koro Sensei is sent flying to the right and through a few trees)

(Koro Sensei gets up and quickly dashes back towards All Might)

(All Might punches several small gusts of wind at Koro Sensei)

(But Koro Sensei dodged them as he flies towards All Might)

(Koro Sensei breezes past All Might, wrapping his tentacles around All Might's arms)

(He keeps on flying while carrying All Might, spinning around as flies)

(Struggling, All Might tries to free himself as Koro Sensei spins him)

All Might: Oklahoma Smash!

(All Might begins to spin himself around as Koro Sensei spins around, turning himself into a tornado going the opposite way)

(He breaks himself free, throwing Koro Sensei into the ground as he sends himself straight into the air)

(All Might falls back down, his smiling glistening as he pulls back his fist)

(But Koro Sensei's head gains green stripes, before disappearing)

(Koro Sensei appears behind All Might as quickly as he vanished)

Koro Sensei: I've found your weakspot!

(Koro Sensei turns a few of the tips to his tentacles into drills, aiming for All Might's chest cavity)

(Quickly realizing where Koro Sensei's tentacles were trying to get, All Might reacts in time and grabs the tentacles)

(The tentacles pierce's All Might's chest cavity, making All Might caugh up blood)

(But he grabs Koro Sensei's tentacles, to his surprise)

All Might: Then I better kick it up a notch!

(He throws Koro Sensei through the park, sending him flying into multiple trees)

(All Might lands onto the ground, holding his wound)

(Koro Sensei lands onto the ground, scratched and scuffed up, beginning to huff)

(From a distance away, the two speaks to himself)

Koro Sensei: He's good... So I'll just have to kick it up a notch!

All Might: He's fast... So I'll just have to go even further beyond!

(All Might steadies himself as Koro Sensei heals himself up, taking away some energy)

(The two then charges towards each other, leaving shockwaves behind each other)

(Cue: Bonus OST: Assassination Academia (All Might vs Koro Sensei)

All Might & Koro Sensei: Show me everything you have!

All Might: PLUS ULTRA!!!

(All Might throws a powerful punch into Koro Sensei, shattering the ground beneath him with a powerful shockwave)

(But when All Might looked, the entire impact of the punch was absorbed into Koro Sensei's shedded skin)

(Koro Sensei had dug underground, burrowing beneath All Might)

(A huge beam of energy erupts from the ground underneath All Might)

(The beam engulfs All Might, destroying the ground beneath him)

All Might: Texas...

(Struggling against the beam, nearly getting overwhelmed, All Might throws a punch directly down)

All Might: Smash!

(Koro Sensei quickly escapes from his spot underground, digging out of the ground)

(All Might destroys the ground beneath him with his punch)

(Koro Sensei fliew up into the air behind All Might, diving towards him)

All Might: There you are!

(All Might quickly turns around, shocking Koro Sensei as he punches him)

(Having caught Koro Sensei off guard, All Might strikes Koro Sensei in the chest, sending him flying back)

(Koro Sensei coughs up some blood after getting hit in the chest)

(He's sent flying through multiple trees, landing in the center of the park)

All Might: Seems like I've found your weak spot!

(He lunges towards Koro Sensei, who quickly gets back up on his feet to fly out of the way)

(Jetting into the air, he creates multiple visual clones going in different ways)

(The visual clones surrounds All Might, striking him multiple times in multiple areas)

(All Might tries to punch Koro Sensei, but keeps missing)

(But he's able to grab Koro Sensei's tentacle, with the force ripping it off)

(Koro Sensei starts to slow down, giving All Might the chance to land a punch on Koro Sensei)

(Koro Sensei crashes into a tree, regenerating his lost tentacle)

(All Might lunges towards Koro Sensei, his arms crossed)

All Might: Carolina...

Koro Sensei: I've seen this one before!

(Koro Sensei sends multiple tentacles flying at All Might)

(But All Might smiles, striking the ground with a dual chop)

All Might: Smash!!

(He creates a shockwave, sending Koro Sensei's tentacles back at him)

(The shockwave stuns Koro Sensei as All Might lunges towards Koro Sensei)

(Quickly reacting, Koro Sensei makes a giant net in front of himself out of his tentacles)

(All Might strikes the net, getting his fist stuck but sending a powerful shockwave all throughout Koro Sensei)

(But he's able to withstand the kickback from All Might, wrapping his tentacles around All Might)

(Koro Sensei flies up, with All Might imprisoned in the sticky net tentacles)

(He spins All Might around in multiple different ways, as All Might tries to break himself free)

All Might: Detroit...

(Koro Sensei grins as he let's go of All Might, throwing him into the ground)

(He creators the ground when All Might crashes into it)

(Koro Sensei darts directly down towards All Might, creating a sonic boom behind him)

(He charges into All Might, pushing him deeper into the ground)

(Getting pushed into the ground, All Might tries to stop Koro Sensei)

(But Koro Sensei repeatedly strikes with his tentacles as he continues to burry All Might into the ground)

All Might: Oklahoma Smash!

(As he yells out, All Might spins around, sending Koro Sensei flying back up to the surface)

(All Might jumps out of the hole after Koro Sensei, striking him with a punch)

(Sending Koro Sensei flying upwards into the air, All Might lands in the crator next to the previous hole)

(All Might jumps out of the hole as Koro Sensei catches himself, flying back to the ground)

(Koro Sensei aims his tentacles and starts to gather up energy in the tips of his tentacles, firing a beam at him)

(All Might jumps up out of the way of the beam, pulling back his fist as he lept towards Koro Sensei)

(Koro Sensei looks up, quickly trying to fly away and barley escapes as All Might strikes the ground)

(The shockwave knocks back Koro Sensei, breathing heavily)

Koro Sensei: He's good... I gotta end this no- AHH!

(All Might leaps towards Koro Sensei again while throwing another punch, catching Koro Sensei off guard)

(He strikes the ground, the shockwave launching back Koro Sensei)

(Koro Sensei gets up and pulls himself together)

(All Might laughs a bit, wiping sweat from forehead)

All Might: What was it that you said earlier? That I was a bit too slow?

(He jumps towards Koro Sensei again, throwing multiple punches while Koro Sensei keeps trying to avoid All Might's attacks)

All Might: Seems like I've been keeping up with you quite well now!

(Koro Sensei laughs a bit as he evades All Might's onslaught of punches, starting to run out of energy)

Koro Sensei: You're right, I did say that! So let's kick it up a noche!

(Koro Sensei darts up into the air as All Might tries to hit him, a mach cone forming around him)

(He creates a sonic boom beneath him, knocking All Might back)

(Koro Sensei darts back at All Might, striking him as be flies past)

(He goes too fast for All Might to keep track of, repeatedly striking All Might)

(All Might tries to hit Koro Sensei back, but he keeps missing every punch he throws)

Koro Sensei: Can you still keep up with me now!?

(He keeps repeatedly hitting All Might, getting faster and faster)

All Might: This...is nothing. For a hero...like me!

(As All Might says his line, he's able to land a successful hit on Koro Sensei and sends him flying backwards into the air)

(All Might jumps, crashing into Koro Sensei)

(Koro Sensei throws All Might off of himself into a tree)

(But All Might uses the tree to propel himself upwards)

(He launches himself upwards, much higher than Koro Sensei)

(Koro Sensei looks down underneath himself, seeing a pond beneath himself and All Might up above him)

All Might: New Hampshire Smash!

(All Might throws a punch that launches himself backwards, before he turns himself around to be facing Koro Sensei)

Koro Sensei: Fine then! You wanted my best!?

(Koro Sensei aims his tentacles into firing a beam, a white light glowing brightly)

Koro Sensei: Then...

(The white light suddenly changes yellow)

Koro Sensei: Here...

(The yellow light turns red, then green)

Koro Sensei: It...

(The light then becomes blue, before turning back to white)

Koro Sensei: IS!!!

(Koro Sensei fires a ginormous beam of pure-white energy)

(The beam engulfs All Might and rips through the skies)

(But All Might pushes past the blast, pulling back his fist)

(A white ball of light quickly turns to a blue light)

All Might: One For All!

(The blue light then becomes red, green, orange, purple, then finally pink in his fist)

All Might: United States of...

(All Might puts all his power into this one last punch, as he throws it towards Koro Sensei, the beam of light splitting apart against All Might)

All Might: SMASH!!!

(All Might pushes through the beam and into Koro Sensei)

(His fist breaks through, impaling Koro Sensei through his chest, and his heart)

(The beam of white light stops, as everything slows down)

(They both realized what had happened, then the impact of the punch creates a tornado that destroys the pond beneath them)

(The tornado clears as they both land on the ground)

(Tears begin to fall from All Might's eyes and his smile fades, with the realization of what happened)

(But a tentacle gently touches All Might's face)

Koro Sensei: It's alright... We both went a bit too far...

(The tears lightly stops from All Might, as Koro Sensei speaks)

Koro Sensei: You're a great hero... And a great teacher...

(He retracts his tentacle, with his smile still staying)

Koro Sensei: If we meet again on the other side... Let's do this again...

(All Might sets down Koro Sensei, with All Might giving Koro Sensei one last smile)

All Might: Right.

Koro Sensei: Goodbye... All Might...

(Koro Sensei's body starts to glow as small yellow balls starts to flow and fly away from him underneath the black academic dress)

All Might: Goodbye... Koro Sensei...

## Results

(Cue: Brian The Sun - Heroes)

K.O!

(The remaining light from Koro Sensei flutters up into the air, as All Might picks up what remains of Koro Sensei's costume before the water from the pond falls down like rain)

\*crying\* Damn it, why did I have to cry!? I said I wouldn't cry!

I-I mean, this was a pretty close matchup. And just like that final exam, really hard to figure out.

For starters, Koro Sensei was obviously smarter than All Might. While All Might can be clever, Koro Sensei usually wins by outsmarting his foes, including the headmaster. And he's memorized every problem set in Japan.

And while Koro Sensei is definitely more experienced than All Might, there's a big difference to who they usually fought. Koro Sensei has never had to deal with anyone with the superhuman strength All Might possesses, but somebody like Koro Sensei wouldn't be out of place in the world of My Hero Academia.

Though his tentacles and unique body does give Koro Sensei a more versatile arsenal compared to All Might, who mainly uses punches and big gusts of wind.

Koro Sensei was also faster. We've already determined that Koro Sensei can reach up to Mach 718.38 with his visual clones, so let's look at All Might. He was able to rundown this stairway. Considering the height of the stairs, and the anime shows him going down it in half a second. That would mean All Might was moving at Mach 29. This makes Koro Sensei 24.78 times faster than All Might.

However, All Might makes up for it in his strength and durability. We've already figured out that using 100% of One For All would put All Might at 748.01 megatons of TNT, at the least. We can even level this out as All Might's durability, considering One For All is equal to him, and they fought evenly in the past. As for Koro Sensei, let's look at the beam he created in his final battle against Reaper 2.0. Considering Koro Sensei's height to the blast, and not including vaporization due to it not vaporizing Reaper 2.0, we can get this blast to be worth around 979 kilotons of TNT. This makes All Might 764.06 times stronger and tuffer than Koro Sensei.

So while Koro Sensei is much to fast for All Might to hit him, All Might is far too strong and durable for Koro Sensei to do any real damage to him.

So how does this standstill break? Well, we don't have the complete story here.

Let's take a look back at All Might's fight with Nomu. Specifically where he states where that it took him 300 hits to take out the Nomu, but would've taken him 5 back in his heyday.

We're taking these characters at their strongest. So going by All Might's estimation, he should be 60 times stronger, and likely 60 times faster. So while him running down those stairs got him at Mach 21, the multiplier gets him to Mach 1260. Putting him faster than Koro Sensei.

And while we can get Koro Sensei to that area, All Might would still be slightly faster. Let's look at Koro Sensei catching an entire pot of soup with an eyedrop. While this feat may not seem nearly as impressive, considering the timeframe, soup, and how far he had to move to catch any of it before it could touch the ground, Koro Sensei would have been moving at Mach 1241. Though surprisingly, All Might still barely edges out.

And let's keep in mind that the multiplier for All Might aplies to his strength, too. Don't think that should apply to the feat performed by Midoriya and Bakugo? Well let's look at the punch that Detroit Smash that changed the weather. Taking the time frame, energy needed to change the weather, and the multipliers, this is worth 1462.8 gigatons of TNT. Furthering the gap between All Might and Koro Sensei in terms of strength, by 1494177.72 times more.

But what about that beam of light that Koro Sensei dodged? That would be way faster than what All Might scaled to, putting them right back to where they were.

And while this is true, All Might has means of slowing down Koro Sensei, while the opposite isn't true in making All Might weaker. Showing there's a lot more to this matchup than just basic stats.

But shedding and regenerating lost tentacles will slow down Koro Sensei. Same with water and holding him down. And with All Might being more than capable of producing a storm with a punch and having the strength to make Koro Sensei resort to his trump cards, All Might could reasonably slow down Koro Sensei.

Koro Sensei's weaknesses are typically much easier to exploit than All Might's. Sure, All Might does have that gash that Koro Sensei could most likely find, considering his tentacles could find the slightest difference in muscle and body structures, but Koro Sensei's heart is a more obvious weak spot.

And while Koro Sensei is more versatile, All Might's own attacks have been able to cover much more area, allowing All Might to be able to reach enough distance to land those hits on Koro Sensei that would really matter.

But the biggest question that determined the outcome to this matchup is if Koro Sensei could really destroy the moon. Because while yes, it was a mouse imploding that caused 70% of the moon to be evaporated, Yanagisawa stated that becoming pitch-black brings out his full power.

Let's take that literally. We know it wouldn't be from the beam he used to defeat both Yanagisawa and Reaper 2.0, considering it's nowhere near that power. So this would only come from Koro Sensei's self-destruct. However, this is where his chances to live ended up being what killed him, as cruelly ironic as that may seem.

Koro Sensei could still potential implode and take All Might down with him. As long as he could beat All Might before All Might could beat him, it would count as a win. However, the chances of Koro Sensei imploding from the tentacles is less than 1%. While that possibility is there, it's far to unreliable to give Koro Sensei the chance to take down All Might before he went down himself.

While this was an undeniable close matchup due to Koro Sensei's intelligence, versatility, and speed. All Might was just too strong, tuff, experienced, and the means to take advantage of Koro Sensei's weaknesses.

It looks like All Might was the true unkillable teacher.

The winner is All Might!

## Trivia

* The connections are that they are massive, yellow teachers that work at a pristine school (U.A. and Kunugigaoka Junior High School) and also were the best at their jobs before becoming teachers (All Might was the number 1 hero, and Korosensei was the best assassin known as the Grimm Reaper). Both also have a smile on their face almost all the time to give an impression (All Might has a smile so others would feel safe, and Korosensei has a smile to seem as something so goofy you would want to strangle it). Even as a teacher, both were targets to others (villains and assassins) and were deemed as unkillable, despite them both having simple weaknesses (All Might could only hold his form for so long and Korosensei is physically weak). Both are also willing to sacrifice themselves for their students and do anything to protect them, with them giving everything they had left in them to protect their students while defeating a long time enemy for the final time (All Might lost One for All after his fight against All for One when trying to rescue Bakugo, and let his other students escape when they tried saving Bakugo themselves, then retired from hero work. And Korosensei fought with all the energy he had left to defeat his previous student, Grimm Reaper ll, and the man that scientifically gave him his abilities, Kōtarō Yanagisawa, when they had him imprisoned in an anti-Korosensei forcefield. Defeating the two and the students assassinating him so the government didn't). Both also defeated who basically started the line of their powers (All for One and Kōtarō Yanagisawa). Both also taught a student that carried on in their footsteps, didn't care about what happened to them to help their friends, and had uniquely colored hair (Izuku Midoriya and Nagisa Shiota). They both also get sent down their most well-known path (hero work and teaching) by a lady they deemed as their mentors, Nana Shimura and Aguri Yukimura.
* This episode is the season 1 finale of Fiction V. Fiction
* This matchup is the creator's most wanted and favorite matchup
* This episode is the first episode to get a custom trailer made for the episode
* This episode was originally going to have a custom track specifically made for it, but ended up being scrapped due to it not working out
* The set-up was originally going to involve class 1-A and 3-E meeting each other, but that ended up being exchanged for a planned meetup to shorten it, and it functionally doing the same thing
* There was going to be a flashback in the fight nearing the end, showing back at the start of the fight or events before the fight that involved them interacting, however this was excluded due to worries of it hurting the pacing
* The line in Koro Sensei's rundown, "And then the most dangerous weakness, the most viscous beast known as boobs!" is a reference to Issei's rundown in Issei vs Tatsumi
* This is the third episode to use a custom track that was already previously made
	+ The first two were 2B vs Raiden and Eren Yeager vs Ken Kaneki
		- However this is the second episode to have the track specifically made for the song
			* Funnily enough, both tracks were made by TehGM Scores
* All Might vs Koro Sensei is the Fifteenth episode to get featured on the Death Battle Amino
	+ The first fourteen was Waluigi vs Papyrus, Star Butterfly vs Steven Universe, Mr. Fantastic vs Plastic Man, Yuno Gasai vs Genocide Jack, Izuku Midoriya vs Miles Morales, Monika vs Giffany, Crona vs Shiro, Clementine vs Ellie, Ninja Brian vs Dr. McNinja, Ban vs Deadpool, Travis Touchdown vs Scott Pilgrim, 2B vs Raiden, Fox McCloud vs Rocket Raccoon, Ruby Rose vs Maka Albarn, and Eren Yeager vs Ken Kaneki. The next two is Danny Sexbang vs Hatsune Miku and Meta Knight vs Beta Ray Bill
* At the end of the episode, there was a message to the viewers instead of another trailer, due to this being a finale. The message read:
	+ "So, hi. This is the season finale, so I don't really have a next time. But I wanted to use this spot to say something. Thank you for reading this series. I really mean it. I've been working on this series for years, and it played a big part in my life. So, anyone actually reading these episodes and enjoying them brings a smile to my face. Will I do a season 2 of Fiction V. Fiction? Well, I had one planned, but reality is happening and I'm not sure if I'll be able to finish it if I started another season. I have so many plans for a season 2, but I don't want to start something I don't think I'll be able to finish. But I'll think about it. But nevertheless, I can't help but to say thank you for reading this series, or even just one episode. Until I do another episode related to Fiction V. Fiction, goodbye for now. And once again, from the bottom of my heart, thank you. ~From, Aipom."