Kunugigaoka High School

Nagasi walked into his new school otherly impressed. He saw many people walking there, everyone with a quirk crazy then the other. He walked to the main part of the building in search for his new class.

''Wow this place is fancy.'' Thought him looking the school from the inside. They have top of the line tech there, good air coordinator and clean halls. This was a totally different school than his previous one.

He then started to look at all the classes at the first floor. However, he didn't found 1-E.

''1-A,1-B,1-C,1-D…where is 1-E?' Asked Nagasi confused.

Nagasi then start to look around trying to find any help. Finally, he found a third year senpai with a bird face.

''Excuse me?'' Said Nagasi

''Yes.'' Said the bird face senpai

''I´m sorry to bother but I´m looking for my class.'' Said Nagasi

''Oh, is ok. Many first year have problem in the first day. What is your class?' Asked the senpai

''Is 1-E.'' Said Nagasi

The senpai then got a shock face and looked at Nagasi with disgust

''Find yourself monster.'' Said him leaving the teen.

''What?'' Asked Nagasi confused. What just happen

Nagasi then ask some other people, at first, they seen nice but as soon the words ´´1-E´´ appear they push him back like he was the plague.

''Well someone here must know where 1-E is…'' Said Nagasi all determined

Nagasi asked some other student and all of them pushed him back. Even the janitor ignore him. Now he was desperate.

''I only have a few to find 1-E. What is the problem in this school?" Asked Nagasi out loud

''Did you say 1-E?' Asked a random first year. He had a normal appearance of a teenager and probably didn't have a mutant quirk

Nagasi turn to see the new guy and wonder if he knew where to find the class.

''Yeah do you know where is at?' Asked Nagasi

''Yes, I found early. I was just gonna get some drink and then walk there. Come with me.'' Said the teen.

''thanks man, I´m Nagasi Shiota.'' Said Nagais

''Pleasure I´m Tomohito Sugino'' Said Sugino shaking Nagasi hand

''So Sugino do you know which floor is 1-E.'' Asked Nagasi

''Oh, is not here.'' Said Sugino

''What do you mean?" Asked Nagasi

''Is outside.'' Said Sugino

''Outside?' Asked Nagasi confused

''Yeah.'' Said the boy as the two leave the school

The two walked a little over the woods near the school and saw something there

''Hey look a sign.'' Said Nagasi

1-E go up

The two saw a bunch of stairs to something far on top of the mini mountain near school. They saw some people on top, must be their new classmates.

''We have to go up?" Asked Nagasi

''Well I guess we can't complain.'' Said Sugino with a smile

''Yeah. We are a special kind class.'' Said Nagasi as Sugino understood what he was referring to.

The two climb that set of stairs for what felt like an eternity. They still had time before class, but this was horrible. Worst part, they had to do this every day.

''Man, this is exhausting, Kit should taught me some cardio.'' Thought Nagasi exhausted.

''Come on man you can do this.'' Said Sugino with a smile as he kept going up

''You have good endurance.'' Said Nagasi

''I have baseball to thank for that.'' Said Sugino

''Big fan?' Asked Nagasi

''Yes. You too?" Asked him

''Sorry never been obsessed with.'' Said Nagasi

''Is ok. I have been practicing since I was 8, little things like cardio resistance are stuff you have to thank for a good training.'' Said Sugino.

''that's great.'' Said Nagasi with a smile. As well a confused thought, if Sugino was a big baseball fan. Why is he training to be an assassin? He would probably ask that question later but for now he is quiet.

The two climbed all the way to the top. They saw what looked like a florest and they look around for any sing of class 1-E.

''We reached the top. But where is the class?" Asked Sugino

''Hey look…'' Said Nagasi seeing something

The two saw an old shack that looked like some country home. A very cheap country home. On top there was a sign that said ´´1-E´´. That was their classroom.

''Our class is a shack?" Thought both of them confused.

''Well we better keep going.'' Said Sugino as he and Nagasi kept going

1-E Class Shack

The enter the place and it looked like it was pretty beaten. It wasn't falling apart, but it felt old and kind ugly.

''Wow talk about old school.'' Said Nagasi

''I guess this where we take our shoes.'' Said Sugino putting his shoes away and putting their room shoes

The walked into the one place that had sound from other people. On top it said ´´main classroom´´.

''Well here is.'' Said Sugino opening the door

The enter inside and saw by now 10 people had arrived. All of them kind had some interesting look. So far, no mutant quirk but who knows. There was girl with purple hair and glasses, a blonde, a huge muscular guy, a blonde talking to some short girl, an orange hair girl playing with some ladybug, so far nothing major.

''Hey more people.'' Said Hinano

''Cool more assassins.'' Said Hiroto saying out loud to everyone horror.

''Dude!" Said Taisei hitting Hiroto in the head

''Quiet down.'' Said Takuya

''Yeah we don't be heard by the entire school.'' Said Chiba all cold.

''Sorry.'' Said Hiroto with a cheap smile.

''Well I guess not everyone here is quiet.'' Said Sugino

''True'' Said Nagasi

''Now let's see who sits where.'' Said Sugino looking at the class seat system

Nagasi sat on the seat number 11 while Sugino was 13. They were close so that was good.

He look at his classmates and wonder why they choose to be assassins. They looked fine, but hey who knows.

''Each one of them is so unique. Unlike the hero students we tend to hide our true identity from everyone we know'' Thought Nagasi not knowing some people staring at him

''What is she looking at?" Thought some of the 1-E students.

''Oh, hey it's you.'' Said the same green haired from the exam seeing Nagasi on her classroom

Nagasi saw the green haired hair girl walking in his class and he got a smile in his face.

''Hey, you also made it.'' Said Nagasi with a smile

''Yeah I guess we are classmates.'' Said her all happy

''Well good.'' Said Nagasi. Soon the girl had a curious look

''Oh sorry. But in that day, I didn't get your name during the exame.'' Said her.

''I´m Nagasi Shiota.'' Said him.

''Kaedo Kayano.'' Said her

While they were talking the others, classmates were commenting on that scene.

''Dude there is already making a move on that flat chest.'' Said Okajma

''Wait he is a dude! I really thought he was a chick.'' Said Hiroto confused upon looking at Nagasi.

''Wait you too!" Said Takuya also in shock.

Nagasi heard those shouts and had a sweat over his head. Once again people taught, he was a girl because of his appearance and long hair.

''Is something wrong?'' Asked Kaedo

''Yeah. They also thought I was a girl. Is all because of my long hair.'' Said Nagasi.

''Why don't you cut it?' Asked her

''My mom wouldn't let.'' Said him trying to not reveal the real reason of that case.

Kaedo upon hearing that went near Nagasi and did something. He put his long hair in a style similar to ponytail. Unlike a regular ponytail this was more in the same way as her. With two ones in her head. Making his face more visible.

''There. Perfect.'' Said her seeing her work.

Everyone in the class saw that. And while it didn't help Nagasi case, it was better than having that long hair.

''Now you don't have to be mistaken by a girl anymore.'' Said Kaedo with a smile.

Nagasi didn't know how to respond to that. This was the nicest thing that a girl has ever done to him. Every girl in his life always mock him or stay away. But Kaedo she was different.

''SO, do you like it?'' Asked Kaedo

''Yeah thanks.'' Said him.

''Good.'' Said the girl going to her seat.

Nagasi only smile at that.

''Man. My life here sure is different'' Thought him very happy.

The blonde girl next to Nagasi (Nakamura) only looked at him with curiosity and decide to ask

''Are you a boy or a girl?'' Asked Nakamura

''I´m a boy!"' Said Nagasi all embarrassed

''Really. I don't think so. Show your ´´things´´.'' Said her with a smirk

''What's is wrong with you?' Asked Nagasi more embarrassed

''Honey you are in class of future assassins and you asking what is wrong in my head?' Asked her with a smile.

''She is right. Show to us.'' Said Sosuke also curious

''Maybe he is a transgender. You know like in most show?" Said Yuzuki with a possibly

''I talked to soon.'' Thought Nagasi all sad.

Minutes later.

It was one minute for class to start and there was only one person missing. That was really making people in the class kind mad.

''Where is this guy?" Asked Yoshida.

''I guess he couldn't make it.'' Said Rinka

''Maybe he got lost in the way to the class. I got lost like three times on my to here.'' Said Hiroto as a joke

''Then let him be late.'' Said Terakasa. The biggest and mean looking guy in the whole class.

''Why such negativity? Maybe he is late.'' Said Okuda

''Who cares. If doesn't show up that mean he doesn't care about this profession.'' Said Terakasa.

''Hey man. Let's not judge someone that we haven't met yet.'' Said Isogai

Then the last student appear. And which you know it was…Karma

''Sorry my fellow classmates. I was busy.'' Said Karma walking to the classroom all chill.

''Its him.'' Thought Nagasi surprised.

''Hey! Why that hell are you late. Don't you wanna be on point?" Asked Terakasa.

''Oh no I wanna be on point.'' Said Karma with a smile

''Then why are you so late?'' Asked Nakamura

''Because I felt like showing up late.'' Said Karma all simple making everyone confused.

''What!'' Thought most of the class

Everyone looked at the red-haired guy looking at the class seats all while there were just a few seconds before the class started

''My seat is number 1. Nice.'' Said Karma going to his seat.

Karma then seats all calm ignoring the stares. Nagasi could only be impressed by a guy like that

''He really is something.'' Thought Nagasi

Then after the clock hit the starting the same agent that did the video presentation at the Exam appear in front of everyone. He looked like a deadly assassin, tall, elegant, sharp and most of all very deadly.

''Alright everyone listen up. I´m agent Tadaomi Kurasuma, legal assassin for over 10 years and worker for the Japanese Minister of Defense. As you all know we only have an assassin class once every three years. The last class finally graduate so you are all the next generations of assassins. I going to be straight, this next three years are going to be the most hard, difficult and hellish years of your life's. Understood.'' Said Kurasuma all commando to the student.

''Yes sir.'' Said the class

''Good. Now let me start with basic. In your desk there are knives and guns, but they are not real bullet. Also, if you shoot or kill any of your classmates you are expelled and arrested. Understood.'' Said Kurasuma all serious as everyone was in shock to find deadly weapons inside their desk.

''So sensei what….'' Asked Isogai but before anything Kurasuma cut him.

''Oh no I´m not your sensei. I am going to be your P.E teacher but not your homeroom teacher.'' Said Karasuma making everyone confused.

''What?" Asked most of the class.

''So, if you are not our sensei.'' Said Hinano

''Then who is it?'' Asked Yukiko

''Me.'' Said another voice. A very cheerful and kind creepy one.

That response confused most of the class. They look around and didn't saw nobody who had that tone of voice.

''Huh'' Said most the class

''Who said that?" Asked Nagasi

''It was me.'' Said the same mysterious voice and then in a flash something appear in front of them,

It was a monster. Even though they live in a world of quirks and other mystical things, that was a monster. He was very tall, was an octopus human, yellow, with a very creepy smile( not like All Might, that one was a lot weirder). Also, he was wearing a black, purple, red robe with a crescent moon symbol in the middle.

''Hello children.'' Said the creature.

Everyone was frozen in their place upon seeing that monster. Normally they started to freak out.

''WHO ARE YOU!" Asked most of the class

''What that hell is this?" Asked Terakasa

''What kind quirk is that?' Asked Nakamura

Almost all the students were with tons of questions regarding that thing. Kurasuma only haves an annoying look and scream

''Silence everyone!'' Scream the agent while the octopus remain calm.

Everyone stopped with question and remain on their seats.

''This is better.' Said Kurasuma

''I don't mind a little of noise. The children were only expressing themselves.'' Said the monster

Kurasuma only looks annoyed at the creature and resume his speech.

''Yeah, he is gonna be your homeroom teacher for the next three years. Octopus is your turn.'' Said Kurasuma.

''Thank you.'' Said the monster only nodding with that creepy smile.

Everyone was on the edge of their seats as that monster started to talk.

''My name is Koro. This name was given to me by your government. I am not human like you all. I am creature with a past unknown. I was even called one the seven great mysteries of the world. I am also very powerful so much that pros and military didn't stand a chance to face me, so the government resort to you all assassins to take me down. So, who better than teach you all to kill than the thing that everyone wanna see dead at the moment.'' Said him making everyone confused by the last part.

''Huh''

''That's right. For the next three years I am going to teach you all how to kill someone in the most elegant and correct way. In fact, all of you already have a mission.'' Said Koro

''Which is?' Asked Karma

''Kill me.'' Said Koro surprising everyone.

''Huh '' Said most the class in shock. Their first killing target was their sensei.

That got mixes opinions. People like Isogai, Kimura and others were with so many questions in relation to that task. However Terasaka, Takuya and Yoshida were ready to executed the octopus.

''that's right you heard me right. Your first target to eliminated is me.'' Said Koro

Everyone was still very confused. However, the delinquent trio pick their guns from their desk and aim at their teacher

''Alright sensei.'' Said Yoshida

''Why didn't you say so?" Asked Takuya with a smirk

''Here your test.'' Said Terakasa as he and the others start to fire at the octopus's man.

Bang Bang

While some were in shock that they were already shooting at their teacher, but what shock the most was that Koro disappear while they were shooting and took their guns out of their hands. Everything under 2 seconds.

''What?" Asked Terasaka confused

''Oh, too bad. You were thinking this was going to be easy. Think again young man.'' Said Koro putting the guns away with his tentacles.

''What was that?" Asked Meg

''It got be his quirk.'' Said Yuzuko

Everyone started talking about what kind quirk Koro was. Maybe a rare one, but what kind quirk grants you full octopus' body and super speed?

''Would you kids like you know what is my quirk?" Asked Koro

''Of course.'' Said Kaede

''Well looks the class is already impress by me.''' Said Koro making a dreamy smug face.

The whole class only sweat drop of that action. He might be intimidated but that lose some serious points.

''Sensei. Your quirk.'' Said Nagasi

''Oh right. You see my quirk is….'' Said Koro ready to reveal

Everyone was on their edge of their seats. Ready to hear…

''The answer is…I don't know.'' Said Koro with a laugh.

Everyone fall to their back annoyed by that answer. Koro himself only laugh

''Sorry class. But I don't remember much of my past. I only recall the last two years of my life.'' Said Koro rubbing his back.

''No fair.'' Said Hinano

''Yeah. You have the list of all our quirks, but we can know yours.'' Said Okajima

''Sorry kids but I truly don't remember. But outside of my form and speed I have some other tricks on my sleeve.'' Said Koro

Koro sensei then picks of the guns that were aiming at him and puts near one of his tentacles.

''observe'' Said him firing the gung

Bang

Everyone got shocked. That proved that the monster could be hurt, even fall down because the tentacle was dropped to the ground. Koro however seen unfazed.

''What that…'' Said Sosuke confused

''Man this rad.'' Said Takuya

''For some reason I'm really in the mood for some sushi.'' Said Sumire

''Now look.'' Said Koro pointing to the tentacle that fall down

Then under a few seconds the tentacle was back again. It was like super regeneration, something very rare to happen in this hero world.

''What.'' Said Kotaro adjusting his glasses.

''Super regeneration?'' Asked Meg confused.

''Is that even real?' Asked Sugino

''What are you? A monster?'' Asked Karma with a smile

''Yep. Fresh from the nightmare factory.'' Said Koro smiling.

''What does that mean?" Asked Chiba

''You are a huge threat to be near students like us.'' Said Rinka

''Man, he sound like those villains that appear in the news. The ones that the pro heroes always battle out.'' Said Minura

''Yeah how come any pro hero or the top 10 try to beat you?' Asked Nakamura

''Oh, yeah they tried and they all failed.'' Said Koro making everyone in the class silent.

''Huh''

''True children. I face down every single pro hero of the top 10 and defeat them all with my own tentacles.'' Said Koro all simple

Everyone was just petrified upon hearing that. The 10, the most powerful heroes of Japan were all defeated by him? Impossible.

''You beat every single one of them?" Asked Kimura trembling in fear

''Yeah, the top 10. I kicked all their asses.'' Said Koro with a tone of joy

''No'' Said Hinata in denied. But Koro kept going.

''Yes. Gang Orca, Ryuku, Yoroi Musha, Wash, Kamui Woods, Crust, Mirko, Edgeshot, Best Jeanist, Hawks, Endavour and even All Mihgt. All defeat by me.'' Said Koro listening all his fights.

''Is true.'' Said Kurasuma nodding to the class. And if a guy like that say something is true you believed

Everyone was all tense upon hearing that. Their teacher, the yellow octopus's monster, beat every single pro hero in the top 10. Including All Might. All freacking Might. The strongest hero ever lost. At this point most of the students lost hope.

''Why are we here? If even All Might couldn't beat this guy! What chance do we have?'' Asked Hiroto

''Oh, don't think so negative children. I believe that you all can succeed where All Might failed.'' Said Koro

''What do you mean?' Asked Hazama

''Easy for you to say. You beat him.'' Said Yoshida

''Exactly. So, I am the best person to teach you all the best way to kill me.'' Said Koro

'Huh'' Said most of the class confused

''Why are you a teacher?'' Asked Nagasi

''Good question. Well you see when I was running from the law, I thought myself what is gonna be my legacy in this world. Sure, I became infamous, but I wanted to do something good for once to leave a good impression before I died, so I decided to become a teacher.'' Said Koro saying his motivation.

''For the assassination class. How does the government allowed you to teach us? And what we won if we kill you? An 100% score?'' Asked Terasaka

''Oh no. If you kill me, you all be rewarded.'' Said Koro

The room was once again confused upon the words that came out of the monster mouth

''So, if we kill you we get rewarded?'' Asked Nakamura confused.

''Yeah you will all have 3 years. If someone here succeed to kill me before your high school graduation he will be rewarded beyond his wildest dreams.'' Said Koro

''And if we failed?" Asked Sugino

''I blew up the world.'' Said Koro all simple

The room was again silent. This time it felt like a threat and a serious one.

''What?" Asked Hinano.

''that's right the fate of the world are in your hands. Not in the hands of the students from the hero course but the students from the Assassination course.'' Said Koro saying if this was something to be proud of .

All teens in the class were now a pile of nerves. They only have three years to kill this guy otherwise he will destroy the world. This isn't happening!

''We are the fate of the world?'' Asked Nagasi

''Yes. That's why I wnana you all to be in your main game. All of you will have a very long high school years. The classes are long and the assassin trainement is rough, so I wanna be killed by a professional killer. Understood.'' Said Koro in a very chipper tone.

''Yes-sensei.'' Said most of the class.

'''I didn't hear that.'' Said Koro with a mock tone

''Yes sensei!"" Scream the class.

''Good now here your textbooks for this class.'' Said Koro disappearing with his super speed

He then return with fat books, like really fat books. It was the size of two Atlas, and they weight a ton.

''What is this?" Asked Isogai seeing the huge thing.

''These things are your initial books. They have most of your major and questions that we will be taking in the first weeks.'' Said Koro holding a copy of that huge thing

''They look like ´´Les Miserables´´ ate the Bible.'' Said Nakamura seeing how huge the books were.

''Now I know it may look out of hand.'' Said Koro reading the thing super-fast.

''Out of hand!?'' Scream most of the class

''You are easy to say when you can read the whole thing in seconds!'' Scream Yuzuki

''Now before we start…'' Said Koro ready to start his lecture. Until…

Bang

Nakamura aimed to his head with her gun. However, Koro dodge the bullet with no trouble and took the gun out of her hand

''Dang'' Said Nakamura all angry.

''Miss Nakamura I´m very disappointed at you. Since this is our first day you only get an advertence but try that again and is detention.'' Said him

''what?' Asked the blonde confused. Alongside everyone else

''Here is the deal. While I am your target, I am also your teacher. So I would like you all to treat me with respect and diginity.'' Said Koro

''Really? You dignity?" Thought most of the class.

''Are we really supposed to do that?' Asked Kaede

''what would happen if we don't treat you well and do anything with this place?'' Asked Hiroto

''You all be expelled from the school. Shaming you all for life.'' Said Koro. He knows how serious the Japanese take their education.

Everyone got shocked. If they get expelled during their high school years it is the end of their life's. Most jobs ask for a High School education and if you are a kicked out, they don't even try to look at your resume.

''He is right.'' Said Kurasuma speaking again. He had left the class for a minute but then returned.

''Agent Kurasuma.'' Said most of the class.

''Now is true that this guy is one of the greatest treats in the world. But he is one that we had a great job in making a deal with. He has the full license for the entire high school years, so if he see something that goes against the school board education, I can make sure that anyone here can be expel.'' Said Kurasuma to most of the shock of the students.

''But what is gonna motivate us to do this?" Asked Sugino

''Here is one of the rewards of his death. If you all work together everyone here receives 10 billons yens.'' Said Karasuma

The whole class was now more shocked than ever. One of the rewards for killing that monster was 10 billion yens. It's like winning in the lottery, if they successes they are set for life.

''10 billion yen!" Thought most of the class in shock.

''he he he. I wanna see you all trying to hit me.'' Said Koro with a smirk.

''Is he mocking us?'' Thought the class hating the octopus.

Nagasi upon hearing all that decided to analyze and study his teacher.

'Is good to keep notes on him. All his weakens, powers, personality, everything.'' Thought Nagasi picking a random notebook and started to right.

''Now is true that this guy is a tough opponent. Even professional assassin can't seen to hit him. But we are counting on all of you.'' Said Kurasama ending his lecture as he leaves the class.

''Well goodbye. See you after class.'' Said Koro waving to Kurasama

''Will see about that.'' Said the assassin all cold.

''He and I are such good buddies.'' Said Koro like a idiot

''He doesn't like you.'' Thought most of the class

''Alright kids let's start class. First is history, grab your books.'' Said Koro opening the jumbo book.

So, the class went all normal. Despite having that monster as a teacher, it was quiet good. He had a good pace, knows how to listen to the student's problems and thanks to his super speed he can take question anytime. The students were actually impressed by that.

''He sure is unique.'' Thought Nagasi with a confused look

Koro-sensei never stopped smiling his trademark grim. He was a dangerous, but he was cheerful and by the looks…he love to teach.

After lunchtime

Nagasi had a nice lunch alongside Kaede and Sugino. They were starting to become his actual first friends. After most of the students finishing their lunch boxes, Koro appears like a bomb.

Boom

''What was that?!" Asked Hazama eating alone

''Take cover?" Scream Okajima.

Koro only looked at the kids and brush them off.

''Sorry kids had to deal with some problems involving jets. They were trying to target me so I had dispatch them.'' Said Koro like if was nothing.

''Jets! He beat jets in that little time!'' Thought everyone in horror.

''Yeah also some flying pros-heroes wanted to challenge me. But don't worry I finished them quickly. They are all in the hospital now.' Said Koro with a smile. That left everyone with a horror look

''He beat 3 pro heroes in less than an hour.'' Said Hiroto shaking.

''Yeah sorry. I know I´m your target, but I need to stay alive.'' Said Koro all sorry

''Why bother!'' Thought everyone. They got target ever. An invincible monster.

While many students were cursing Koro, Nagasi was having a nice lunch with Kaede and Sugino in the grass.

''So, what do you think of our teacher?" Asked Nagasi

''he is weird.'' Said Kaede

''Yeah if we wanna become assassins we need to try hit something. But he is impossible.'' Said Sugino

''Yeeha but maybe this is for the better. I mean we are going to face a lot of dangerous people in our life and who better to start off with the most dangerous of them all.'' Said Nagasi making his new friends nod.

''Yeah.'' Said the two

Nagasi then saw Karma all alone in the front of the classroom. He was holding a bottle of water and looking at his surround as if he was planning something. Nagasi decides to call the red-haired demon.

''Hey Karma, wanna eat with us?" Asked Nagasi.

''No sorry man I can't right. Need to make some calls.'' Said him disappearing.

''Alright.'' Said Nagasi confused. That was kind rude.

While Nagasi was having a nice time with his new friends, the classroom tough guy Terasaka and his two buddies Takuya and Yoshida appear to have a few words with the blue haired teen.

''Hey you boy girl!'' Scream Terasaka.

''Yes.' Said Nagasi with a blush of humiliation.

''Tell me. Is your quirk something deadly to finish that octopus?" Asked him

''No. I´m sorry I can only read people and thats all.'' Said Nagasi.

''Crap such a useless ability.'' Said him

''Relax there man.'' Said Sugino

''And you what can you do?" Asked Terasaka.

''I can charge a ball really fast. It can hurt someone if I aim at them.'' Said Sugino.

''Oh, really that perfect. Can you do that in the octopus?" Asked Takuya.

''Sorry but I thought about that. If he could dodge bullets, then what good a super charge ball can do?" Said Sugino making a point leaving the trio to grunt in annoyance.

''And you flat chest. What do you have?' Asked Terasaka

''Wel…'' Said the girl showing the back of her neck

Kaede had two little tentacles spotting out of her neck. It was kind gross actually.

''What are those?'' Asked Takuya.

''Tentacles. Little tentacles.'' Said Kaede with a smile.

''You are gross.'' Said Terasaka

''HEY YOU ASKED!" Scream the girl.

''I don't know they are kind cute.'' Said Nagasi to her.

''Oh really.'' Said Kaede blushing.

''Save your love life for later. Come with me. You had to do it.'' Said Terasaka grabbing Nagasi

''What.'' Scream Nagasi being dradged.

Terasaka then put Nagasi to the other side of the school. It was only him, Terasaka and his buddies.

'So, what do you want?' Asked Nagasi

''This.'' Said the big guy gibing Nagasi a grenade.

''Where did you get that?" Asked Nagasi in horror.

''In a storage. Now listen up because we are going to need you to kill that monster.'' Said Terasaka.

Nagasi was confused. What kind plan did those three had to kill Koro-sensie

''What are you planning?" Asked Nagasi

''Next class is math. He is gonna be busy ask each student to answer a different question.'' Said Yoshida

''Ok so…'' Asked Nagasi wanting to know what the deal was.

''When is your turn you are going jumped into him and denote the grenade. Killing that thing.'' Said Terasaka.

Nagasi upon hearing that was in shock. He knew that his life was going to get a lot dark since he decide to join an assassin class but this…

''You want me to commit suicide!" Scream Nagasi.

''You are a committee man aren't you. Besides there is a good chance of you survive a blast in the face.'' Said Yoshida

''But...'' Said Nagasi still not sure about that.

''oh, come man. Do for the world and for the girls.'' Said Takuya trying to act all cool.

Nagasi saw how these guys were, bunch of assholes who only cared about killing their target and not about the consequences. If he was gonna do that, he wanted something in exchange.

''What do I won if do this?" Asked Nagasi surprising the trio

''What!" Asked Terasaka pissed

''I say ´´What do I won if do this?´´'' Repeated Nagasi.

''Listen here you queer…'' Said Terasaka ready to beat Nagasi. However, Yoshida hold him while Takuya talked with Nagasi.

''Sorry for my friend. Listen here buddy, my family owns a ramen shop. If you do this and survive you can eat free there forever.'' Said Takuya.

''Ok I accept this.'' Said Nagasi. It wasn't much but hey free ramen.

''Excellent. Graduation here we come.'' Said Terasaka all happy

Terakasa then gives Nagasi the instruction of what to do. When Koro calls for him, he was going to pull the pin and explode.

''Remember wait the right time when he calls you.'' Said Terasaka.

''Ok.'' Said Nagasi walking a lump in his throat.

''Nagasi class is about to start.'' Said Kaede.

''Coming.'' Said hm

Math class

Some really odd happen in math class. The kids learn that Koro also had the power to chance the color of his skin. For example, if you got a answer right Koro would have a circle in his face very similar to the ´´right´´ one used in test. If you got the question wrong, his face would be red and have an X of ´´Wrong´´ in his face.

''Wow he is full of surprised.'' Said Hazama

''Yeah. With him we don't what is next.'' Said Rinka

''Well let me see. Nagasi you´re next come here and answer this question.'' Said Koro

''Yes sensei.'' Said Nagasi with a smile. It was time.

''don't blew it right now.'' Thought Terasaka as he saw Nagasi walking toward Koro.

Nagasi had the grandee under his clothes. He put a string that in the right time it would explode at any time. He need to come closer to Koro, very closer.

''Here it comes sen…'' Said Nagasi pretending to fall in an attempt to grab Koro. When he saw that the opportunity was good, he release the pin exploding the grenade.

Boom

A huge explosion happen in the class. It destroy parts of the front row. The good thing is that no student was harmed, but Koro and Nagasi couldn't been seen in midst of that smoke. Everyone got worried of what just happen.

''what was that?" Scream Hinata

''Nagasi!"' Scream Kaede and Sugino worried

''Did he catch the monster?' Asked Sosuke

''Screw that. Is he still alive?' Asked Chiba

Nagasi was still alive and without a scratch in his body. He saw that he was covered in something that looked like a used skin, the same kind that reptiles had when changing.

''What that…'' Said Nagasi confused alongside the rest of the class

''Nagasi.'' Said Kaede relived alongside everybody else

''I´m not dead. But how…'' Asked Nagasi however Koro answered right away.

''If you are wondered how you survive. I molt about once a month; I covered the explosion with my skin, and it stifled the power. In other words, this a skill that I can use only once a month. So good job there Tersaka.'' Said Koro in the ceiling and he was pissed

Everyone was now terrified. Koro went from a goofball to dawn right terrified. Once he let go of the ceiling, he reveal his angry form. The color of that form…pitch black.

''He is…'' Said Meg scared.

''God.'' Said Sumire terrified

''Now I am angry. Terasaka, Yoshida, Muramatsu you three are in so much trouble!"' Scream the monster looking at the trio

''You can't harm us. That was your deal with the government.'' Said Teraska trying to defend himself.

''Oh yeah.'' Said Koro all malevolent.

Koro then was gone in a second and came later in another second. But this time he had a bunch of signs on his tentacles. Those signs, all the students nameplates from their houses.

''What that!' Scream Muramatsu in horror

''Hey is that…'' Said Terasaka in horror alongside everyone

''My house address!'' Scream Hiroto

'Mine too" Said Yukiko

''How did he found out where I lived?" Asked Isogai.

Strangely the only person who was calmed during the whole day was Karma. He only observed everything with a smile. Almost like planning something.

''Listen here all of you!'' Scream Koro

Everyone in the class were frozen in fear as the creature started to talk.

''Who are you?'' Asked Terasaka petrified in fear.

''I am the monster that is gonna be your teacher. Maybe I will kill your….no hwo about I kill everyone in the world except for you. Don't try to hide or move to another planet. I will always find of all of you. What are you seeing is the most powerful being in the whole planet?'' Said Koro all sinister making everyone frozen in fear

''What is all this? You chose to be a teacher for a class of assassins. You know that we are about to pull shit like that. Can't you just take a little joke and not get all irritated.'' Said Terasaka now crying in fear

However, this was enough to make Koro chance his face to pitch black to the normal yellow. His personality was also back to normal.

''Irritated no. I´m kind surprised that you had an idea like that in the first day. I give credits for finding an actual grenade.'' Said Koro

''Huh'' Said Terasaka still crying

''Nagsi kun I´m surprised at you. True be told I didn't even know you had a grenade hiding inside. You had a perfect posture and movement; this kind skills are important for assassins.'' Said Koro praising Nagasi

''Thanks Koro-sensei.'' Said Nagasi smiling. Maybe this monster wasn't too bad

''Sure. However, Terasaka and others broke several rules. As for that they need punishment.'' Said Koro.

''What are you gonna do? Beat us?'' Asked Yoshida trembling

''No. Something much worst.'' Said Koro all sinister making everyone spine chill.

''Worst. What is it?'' Asked Muramatsu.

''I´m…. passing extra homework'' Said Koro going back to his usual tone.

''Huh'' Said the class confused. That was the punishment.

''That doesn't…'' Said Muramatsu but then Koro kept going.

''I need three book reports. Five pages of math and an essay done by the end of the week.'' Said him giving the list of extra homework

''What so unfair.'' Said the trio

''You have to do it guys.'' Said Isogai

''Yeah. The teacher asked for that.'' Said Nakamura with a smirk

''Oh, they call me teacher.'' Said Koro crying

''Is he crying?'' Asked Nagasi confused.

''Who knows what this thing is feeling at the moment?'' Said Kaede with a sweat dropped.

''Nagaisi.'' Said Koro

''Yes sensei'' Said Nagasi

Koro then pat Nagasi head as almost to say ´´good work´´.

''I hope this was a lesson for you. Assassination is not a glamourous life as like the Hero course, but the way I saw you coming toward me I can definite say you have potential.'' Said koro

All his life Nagasi wanted to have a right path. He didn't what to do until he meet Kit, and now with Koro sensing approving he knows that he choose the right path as being an assassin.

''Thank you sensei.'' Said Nagasi all happy

''Right. No go back to your seat. Now let's see…Sosuke come here solve this problem.'' Said Koro.

End of the class

Koro sensei was waving to the students leaving the 1-E shack. They were all tired and seen to be getting along fine. Nagasi was walking with his friends to gates of the school

''Man I'm beat.'' Said Okajima

''Me too.'' Said Hiroto

''Bye sensei.'' Said Hinano waving to her teacher.

''Goodbye children. And remember tomorrow is the first P.E training section. Have a good night of rest.'' Said Koro

''Sure.'' Said most of the class

Nagasi and his friends.

''Well this was our first day of class.'' Said Nagasi

''Pretty intense. Do you think those guys from U.A would also have something like this?" Asked Sugino

''I hope not. I heard All Might is there. While they have the number one hero, we have the number one monster.'' Said Kaede.

''Can you imagine us up against the likes of them?" Asked Sugino. The Hero class versus the assassin class.

''I don't even wanna think about it.'' Said Nagasi

''Hey guys.'' Said Karma walking toward Nagasi and the others

''Karma.'' Said Nagasi surprised

''So, our sensei is something. He is gonna be a tough one to kill.'' Said Karma with a laugh.

''Yeah.'' Said Sugino

''You were pretty quiet today. Is something wrong?" Asked Kaede.

''I was just thinking of way to end that miserable octopus. I won't tell my plans, but let's just say we are gonna have Tokayaki pretty soon.'' Said Karma with a laugh while the others tremble in fear.

''He is scary.'' Thought the trio

While ready to go down on the mountain Nagasi saw Koro observing him. Almost like watching him to make sure he can go down ok.

''What is with thim?' Asked Nagasi

''I don't know. Maybe he is watching us.'' Said Kaede.

Nagasi then saw Koro waving at him

''Goodbye Nagasi.'' Said Koro and that made Nagasi smile.

Nagasi then waves back at his teacher.

''Nagasi are you coming?" Asked Kaede.

''Yeah we are thinking in stoping in a café before heading home.'' Said Karma.

''Sure.'' Said Nagasi happy. It was good to have friends.

Nagasi went to his new friends to the café. This was his whole new life and he was loving every minute.

Back to 1-E.

''Well first day complete. My observation…. success.'' Said Koro to Kurasama.

''I never imagined that you actually success. Well congratulation octopus.'' Said Kurasama with his usual look.

''I am following her footspets.'' Said Koro thinking of some mysterious female

''What are you saying?" Asked Karasuma

''Nothing. So, you wanna grab a beer?' Asked Koro trying to act cool

''I don't drink too much.'' Said Karasuma stopping the monster fun

''Oh ok. That's cool, I mean you are agent and stuff.'' Said him a little sad.

''So, you´re gonna live here or…'' Asked Kurasama.

''Well I can go and sleep anywhere in the world but don't worry I will be back here very soon.'' Said Koro

''Well as long you don't cause damage you´re free to go.'' Said Kurasama curing under his breath.

''Deal. See you tomorrow and I will bring donnuuuuts.'' Said Koro launching towards the sky.

Karasuma then saw Koro disappear. That thing was dangerous, but also kind likable.

''That thing beat All Might and now offered me donuts. I live in a crazy world.'' Said Kurasama turning the lights out of the shack as he head home.

First day of school complete. I kind like this one. Prepare I just made a list of how this story is gonna structure, I hope you all enjoy. Plus, writing Koro is so much fun. See you later.