In the middle of Night.

In the Nomad plane flying in the air, inside the aircraft, (Y/N) is wearing his school uniform taking him to Japan taking his stuffs and guns.

Otacon: Okay, (Y/N). Your first missions is take down those weird octopus thingy. It might be tricky and hard to kill it but it should piece of cake of saving the world.

(Y/N): Well, thanks Otacon.

Otacon: You should, know where you'll be sleeping right?

(Y/N): Yeah, I know. Mind I sure I take the helicopter?

Otacon: Chuckle Sure, just don't tried to scratch on her.

Making them chuckles for the bit, before they stood their feet up and hug each other before let go.

Otacon: Good luck... Strike.

(Y/N): Yeah, you too.

He looked at his best friend.

(Y/N): Alright, Benny! Get your ass over here!

Benny: Coming! Jeez you don't have to call me here.

They laughing.

After Benny hugging his mentor, (Y/N) and Benny goes to the helicopter. They looked at Otacon giving thumb ups and he nodded his head.

Otacon press the red button releasing on the transport aircraft releasing the air out of the plane and they their head giving Otacon to salutes and he salutes back.

As the Helicopter reverse back falling down in the air, before the copter's blades started spin around and flying in the air taking them in Tokyo at Japan.

(Y/N): Alright to our house.

After in few minutes after they finally reached their house.

(Y/N): And there is it.

The House will serve has base and operation of (Y/N) and Benny to find out and take out of the yellow octopus and Shiro's experiments. 

And they landed on top of the house.

Benny: Damn! I like our house!

(Y/N): Yeah, it is nice.

Benny: But Otacon mentions that we have a lab on our basement.

(Y/N): Oh yeah, your right. But luckily this.

He smirks before placing Solid Eye Mk II on his left eye using hologram to makes appears out from his eye patch showing of their house of maps and direction, there are secrets doors to the laboratory in the different rooms. 

(Y/N): There's one close nearby. It's at your room.

Benny: M-My room?

When they enter to Benny's room he won't believe what he saw.

Benny: Woah!

Benny: Man! This is amazing! I love this room!

(Y/N): Yeah, you should. But to the way of the secret lab. 

He touch the nearby wall at feet away from the bed activating the secret door to visible making them surprised.

Benny: Whoa! That sick!

(Y/N): I know right!

The door open revealing likes the Elevator.

(Y/N): And going down.

As they enter the elevator and the door automatically shut and it's going down.... in slow.

(Y/N): Damn this is boring.

He looked annoyed.

Suddenly the elevator stops going down in really, really, really fast!

(Y/N): Wa hoooooooooooooooooooooooooooooooo!

And Benny is screaming likes a little girl.

Ding!

As the elevator open and Benny shaking and hugging (Y/N) in awkward silence and (Y/N) with WTF face.

(Y/N): Ahhh, you can let go now.

Making Benny blushing in embarrassing realize what he done.

Benny: Oh! Sorry my bad!

He let go of (Y/N)'s waist and made him  sigh. His face goes neutral walking toward the laboratory. Seeing what they expected. 

Benny: It's unbelievable.

Made them smiles awe at their lab. 

Benny places the Broken damage of HF blade on the high tech table.

Benny: Alright, I'm might able to repair and recreates the sword to infuse the Anti-Sensei it's might take some day to be finished.

(Y/N): Yeah, no problem.

He blowing out the smokes from his mouth.

Benny: Well good thing, Sunny is not with us.

(Y/N): Yeah. She not.

Benny: Yeah.

(Y/N): Well, Benny I gotta go to school.

Benny: First time ever?

(Y/N): Yep.

He drops the smoke before step on it taking the mint place it on his mouth, gets ready for going to school.

After in time, (Y/N) had no idea where his school is.

(Y/N): Goddammit I have no idea where it is. Maybe I could use the Solid Eye.

Before (Y/N) take out his gadget suddenly someone accidentally bumps him makes him nearly fall but he flip up on the ground before he touch the ground.

Before he grabbed on his arms staring at each other.

(Y/N): You alright?

Making her blush in madly.

???: Y-Yes! Thank you for saving me.

(Y/N): You're welcome by the way.

He helps get her feet back on the ground. She looked at his uniform stare it at the bit.

???: Hey! Are you the transfer student?!

(Y/N): Yes, am I and you are?

Toka: I'm Toka Yada. Nice to meet you!

(Y/N): (L/N). (Y/N) (L/N), nice to meet you.

He replies with a small smiles before he shook her hand and she smiles at him.

Toka: By the way, what class are in?

(Y/N): I have trouble to found my school and I'm in Class 3-E.

Toka: Wait! You're in my class?!

She looked surprised at the transfer student.

(Y/N): Yeah, you're in Class 3-E.

She nodded her head in response.

After that Toka taking him to their school but he didn't expected for that.

(Y/N): This place looks old and shit.

He deadpanned at the first school and made Toka nervously laughing.

Toka: Yeah, that's right, this is where 3-E currently building is.

(Y/N): Huh, what you mean?

Toka: Well....

She beginning to explaining about the school building this was the Kunugigaka Junior School first building the system of the school. And Class 3-E was the lowest score in the school and known as "End Class". Those students whose can't and failed to keep their grades higher up or punish for violating the school system. 

(Y/N): Wow! This is how school work!

Toka: I know, this is our class. But I gotta go to my class, later (Y/N)!

She rushes back before she turns and waving at him and smiles at him and smiles in small to respond back.

???: So, you're here, Strike?

(Y/N): Yeah, I'm here.

He glance behind revealing is Karasuma in his serious looks. With his agents.

Karasuma: Good, you know what to do.

(Y/N): Yeah, kill this damn octopus.

Karasuma: That's right.

He nodded his head.

After in a few minutes when the class of E tried to attempting to killed at the Octopus but he kept dodging with his Mach 20 in easily. They think the BB are harmless but expects for the Octopus got shot by the gun. The Government have developed to Anti of him to harm him to slice like tofu and he can able to regenerated in few seconds.

They had to killed him before they graduated their middle school.

Octopus Sensei: By the way! We're have the transfer student!

Everyone: Huh?! A transfer student?!

Inner Toka: Wait! That mean...!

Emo Boy: Transfer student?

Pervert Boy: Man, I hope it's a cute girl!

Blond hair Girl: I wonder it's a boy.

Orange hair wavy Girl 2#: I wonder he's cute or hot.

Octopus Sensei: Okay, everyone settle down.

They did as he said, they all sit down on their chair silently chair at their octopus teacher.

Octopus Sensei: Okay! You can come in!

As he did as he said. Someone going through the door revealing has (H/C), (H/L) and (E/C) wearing the same uniform and Toka recognizes him made her eyes goes open widened.

Octopus Sensei: This is (Y/N) (L/N), he been transferred from the America. He has been home schooled with his guardians and gets along with him.

There was a remained silence before they breaks the silence.

Girl expects for book girl: Kyaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!!! So hotty!

Boy: Dammit! How come there a hot guy had taken with the girls' attentions!

The boys cursed at (Y/N) expects for Nagisa because he's fucking goddamn cinnamon roll.

(Y/N) remains neutral before turning to Toka making her yelp and to be blushing and hiding her blushing he comes to her desk.

(Y/N): Good to see you again, Toka.

Toka: Y-Y-Yeah, you t-t-to.

She stutters in shyness.

Girls/Boys: TOKA YOU KNOW THIS HOT GIRL/DAMN GUY?!

Toka: Yeah.

She nodded her head in embarrassment and blushing.

And (Y/N) turns to the Octopus.

(Y/N): And you the one who blew up the moon?

Making them froze in shocked slowly turns their head to him in the face of disbelief.

Everyone: EH?!

Octopus Sensei: Ufufufufu. I supposed you knew it was me.

He has red circle around his head with a grin before he change back to his color, he turns his head to his student.

Octopus: Yes, IT WAS ME!!!

They staring at him in silent before they....

Everyone: EHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH?!

The burst out in shocked.

Octopus Sensei: That's right! I was....

(Y/N): What this pervy octopus saying that he was the one and responsible for the moon.

They flinched at (Y/N)'s cold voices and his cold eyes and making the octopus to be sad emotions.

Octopus Sensei: Why you called me Pervy Octopus?

(Y/N): That's because you are, hentai.

Octopus Sensei: Cold!

He flinched at (Y/N)'s cold attitudes.

(Y/N): And...

He takes the pistol filled with Anti Sensei began shooting at him but he dodge the incoming BB went behind on (Y/N).

Octopus Sensei: Ufufu... It pointless that, you can't.....

Suddenly (Y/N) swiftly turns to....

Slash!

Octopus Sensei: Eh? Ehhhhhhhhhhhhhhh?!

His expression into shocked even the students too, seeing Korosensei's tentacles has been cutted by the hand of..... hidden blade with Anti Sensei.

(Y/N): You shouldn't let your guard down.

Pervert Boy: Dude! Isn't that the hidden blade from Assassin's Creed?!

Artist Boy: That is awesome!

(Y/N): Yeah, but we have a company for that.

He deactivate of his hidden blade before Octopus regenerated his tentacle, hearing the sliding door gaining their heads turns to Karasuma with the agents.

Karasuma: I believe, Mr (L/N) is right, we do have a company.

They whisper at each other commenting about Karasuma.

(Y/N): Now introduce yourself, Octopus.

Octopus Sensei: Now that's bit rude.

He turns looking at his student still grinning at them.

Octopus Sensei: Now I'm your teacher. Nice to meet you.

They all deadpanned at his childish voices.

Karasuma: I'm Karasuma from the Ministry of Japan Defense. First please to understand that what I'm about to say that is a state of the secret. Let me blunt: I want you to killed this creature.

Made them stared in awe.

Orange hair boy: Um... What is that? is that the Alien or whatever that came to attack us?

Octopus Sensei: How rude! I'll let you know I was born and raised on Earth!

Made him childish angry.

Inner blue hair boy: He was?

(Y/N): Yeah, whatever it is, I the one who manage to cut on of the tentacles of my sneak attack.

Octopus Sensei: How rude! Attacking your teacher with the secret attack was not amazing!!!

Karasuma: Wow, clever kid...

Octopus Sensei: Karasuma! Why you are agre......

(Y/N): Shut up Octopus.

He said with the cold voices surrounded the dark auras surrounded on him and with a cold eyes glare at the octopus making them flinch shiver to their spine and jump back for the little expects for Karasuma unfazed for that. His eyes filled with bloodlust of the devil.

Inner Everyone: Okay! Don't ever piss him off!

Inner Agents: Man! This kid is really is the student of Solid Snake!

(Y/N) turns back into normal with his neutral expression turning to Karasuma.

(Y/N): Continue please.

Karasuma: Yeah.

He nodded his head.

Karasuma: I'm afraid that I can't tell you that the details, but he's telling the truths. Come March, next year, this creature responsibility for crushed the moon and the destroyed the earth as well. Only the world's leaders know about this. if any news of this guy gets out here, it'll be caused of the global panic. You've got to kill him in secret before that happens. In other... assassins!

Karasuma attempting to kill the Octopus with the green dagger of Anti-Sensei but the Octopus manage to dodge easily by Mach 20.

Karasuma: But this guy... is extremely fast! You tried to kill him... and then he ends up grooming your eyebrow instead.... 

Karasuma tried to kill but failed seeing the Octopus behind him doing grooming of his eyebrows and Karasuma swing his knife but dodge by super speed making the air blow everywhere by the speed, covering their arms as shield their eyes.

Octopus kept grinning.

Karasuma: This superbeing has the power to turn a full moon into a crescent. His tops speed at Mach 20! In short, if he gets away, we'll be left helpless awaiting our destruction.

Octopus Sensei: Well, that was no fun. So I made an agree.... Sniffing  Why do I smell like smok... Gaaaaaaaaaaaaaaaaaaaaaaaaaahhh!

His expression turns into fear and shocked.

Octopus Sensei: What are you doing, young man?!

They turn to their head making them comically funny shocked and disbelief with jawdropped seeing (Y/N) is lighting cigarette on his mouth expect for Karasuma already seen it.

Inner Everyone: I-I-Is he smoking?!

(Y/N): What? What do you think, I'm doing?

Octopus Sensei: Young man! You are underage for smoking in this school area! This is bad for your health!

(Y/N): Tch! No thank.

Before he could smoke suddenly his cigarette were vanished and replace by the paper sign on his face, taking the paper off his face looking at the sign say "No smoking!".

Made his left eyes twitching turning light glare at Octopus doing a innocent whistle secret stepping on the cigarette.

(Y/N): Seriously?

Octopus Sensei: Heheheheh! As I was saying, I made an agree to your government an offer: No killing me. 

(Y/N): Or a sneak attack.

Octopus Sensei: And especially a sneak attack. Instead, I'll teach Class 3-E at Kunugigaoka Junior High School.

They all deadpanned at the octopus.

Karasuma: We don't know, what he's after. But we forced to agree, on the condition that he doesn't harm any of you students. We had two reasons. First and foremost, coming to a classroom everyday let us keep an eye on him, and second it gives some thirty people the opportunity to kill him from extremely close range.

He said in serious look.

The blond hair attempting to shoot at the octopus but he blocked with a chalk.

Octopus Sensei: Nakamura... Didn't I tell you not to let assassination to interfere your study?!

Rio: Sorry.

She bow down in apology.

Octopus Sensei: As punishment, go stand at the back!

He scolded her in anger.

Inner blue hair boy: Why did this creature become our teacher? The transfer student is mysteriously managed to cut the creature's tentacle I know he's hiding something and how will we ever to assassinate him? These cries faded with word of one final condition.

He spotted his eyes on (Y/N) writing his works. And remembering about Karasuma mentions about it.

Flashback

Karasuma: Success will be rewarded as 100 billion dollars.

Made them comically shocked expect for (Y/N) accepts for the mission

Karasuma: It's only right. A successful assassination will literally save the Earth. Luckily he doesn't think of you. See? Those green stripes mean he's looking down at you!

The octopus head is green stripes while grinning at them.

Boy: What the hell kind of skin is that?

Octopus Sensei: Obviously! If the government can't kill me, how could you? Even when they sent their cutting-edge fighter jets after me....

Showing how he remember Octopus flying in the sky and the fighter jet chasing after him aiming targeting. Fired the gun but he dodged ended up landed cleaning of wax on the jet.

Octopus Sensei: ... I ended up giving them a nice of coat of wax right there in a midair!

Girl: What's with the grooming?!

Karasuma: You must find a chink in his defenses and strike at it.

His agents brought a refills box of Anti-Sensei to killing the Octopus.

Karasuma: You must keep this secret from your friends and family. There's no time to lose. If the Earth should disappear, we'll have nowhere left to run.

Octopus Sensei: And that's about it! Now let's make the interesting one of the most your one year remaining!

Flashback ended

Inner (Y/N): We're only have a one year. If we don't assassinate this guy or thing whatever, the humanity and Earth will be toast end of history.

A bell rang for lunchtime, making the Octopus cheerful hearing this.

Octopus Sensei: Ah, lunchtime!

He goes to the window before opening it.

Octopus Sensei: I'll just going to China for some mapo tofu. Any aspiring assassins are free to hit me up on my cell.

He flew away releasing the air making covering again leaving for school going to China for Mapo Tofu. (Y/N) narrows his eyes for analyze while the students talking about his speed.  

Inner (Y/N): This top speed is 20 mach if he was travelling to China it would take him to 10 minutes to get to Sichuan, home of mapo tofu. Guess no missiles or Metal Gear could take him down.

They talking about the Octopus taking the grades to correct them while flying in the air and correcting the works with a drawing and teaching the students while he hold back for attempting to killed him.

They tried their best to killed him but failed.

Meanwhile at outside of the school area.

(Y/N) is calming down with a mediating on the ground until he heard someone talking he goes behind the building secretly eavesdropping them.

???: That's octopus's face moods color according to his mood, right? Do you do those observations I told you so?

Inner (Y/N): If I remember corretly, that's Ryoma Terasaka one of the assholes and Nagisa Shiota mistaken as a girl. Just what is he planning for?

He narrows his eyes.

Nagisa: More or less. We know it's stripped with green when he's feeling confident. A right answer makes it go bright scarlet. But what's really interesting is after lunch...

Ryoma: I don't need to know about it.

He smirking down to step in front of Nagisa planning to do.

Ryoma: I have a plan... and when he lets his guard down the most, you are going to carry out.

Making (Y/N) narrow his eyes.

Inner (Y/N): He knew it. He using Nagisa as a bait. But I need to hide myself.

Taking the old trickery cardboard box under neath him, making a small holes to spy on them hearing their conversation.

Nagisa: M-Me? But...

Ryoma: Don't be such be a goody-goody. We are class E the misfits that can't keep up at this famous prep school. They call us... The End Class. Everyday, they send us to this mountaintop campus, discriminating against us like scum. 

Ryoma smirking placing his arm around Nagisa frown and not feeling down about Ryoma's plan.

Ryoma: When would us losers ever in our live's another chance to score a coll billion dollar? We're going to make it--make it through this crappy situation by any necessary.

Ryoma gave him the bag of BB Anti Sensei.

Ryoma: Just don't screw up, Nagisa.

Making his friends laughing while Nagisa staring at the bag in his hand thinking about his past when he failed to keep his grades before send to Class 3-E.

(Y/N): Hey Nagisa, right?

He snapped out to the reality looking at (Y/N) coming to his side he quickly hiding the bag.

Nagisa: Y-Yeah, (Y/N) right.

(Y/N): Yeah, that's right.

He nodded his head.

(Y/N): Everyone see him proof as the target, right?

Nagisa: Th-That was he said.

(Y/N): But.... I don't think there's no opening chances to killing him.

His eyes turning to seriousness with cold making Nagisa to be shocked at his.

Nagisa: B-But there has to be way!

(Y/N): I know but... I the one will be kill him and he did not see it coming from Strike Snake.

He narrow his eyes colder making Nagisa to be shocked and flinched at his word.

(Y/N): But...

He raised his hand rubbing on Nagisa's hair.

(Y/N): I think you're going to be amazing assassin.

Making him blush a bit praising from the transfer student.

(Y/N) let go of Nagisa's hair before his eyes spotted on Ryoma had given Nagisa a bag behind him still keeping his eyes style.

(Y/N): Nagisa whatever Ryoma gave it to you. You should throw it away.

Nagisa look at the bag before looked at (Y/N).

Nagisa: But, it could kill Sensei!

(Y/N): Idiot. You shouldn't waste your life and told everyone what to do. You should decided what ever you likes and make your own future shouldn't lose a precious life. You should worried about your life. Your friends and family members could care about you and.... No one could taking the experiments away from you.

Nagisa: (Y/N)...

He staring at him before his expression changes into Stoic making him confuse for a bit.

(Y/N): Incoming.

Nagisa: Eh?

His expression turns into comically confusion before he could ask any questions but (Y/N) pulled him away for allowing the Octopus landed back on the ground making the wind blow everywhere with a.... missile on him?!

Octopus Sensei: I'm back! Thanks for letting to warn your classmates.

Nagisa: Sensei.

(Y/N): So you finally back you damn octopus what with the missile?

Octopus Sensei: A souvenir. The Self-Defense Force was awaiting for me in the Sea of Japan 

Nagisa: I-It must be terrible for you, being a target.

Octopus Sensei: Not at all. You know you're powerful when everyone has it for you.

(Y/N): Or fried as takoyaki.

Octopus: Yes, fried like.... WAIT THAT'S NOT I MEANT!!!

He childish scolding at (Y/N) unfazed at the octopus thing humanoid or whatever that thing is.

(Y/N): Yeah, whatever let go. Fifth period is starting. Let's go baby squid

Octopus Sensei: You're right. It is start.... WAIT?! DID YOU CALLED ME A "BABY SQUID?!"

(Y/N): Yeah, you are. You act like a childish.

He scoff

As (Y/N) walked back and Octopus started to following back to class. He started to childish arguing at (Y/N).

Leaving Nagisa to think about it to decision.

Octopus Sensei: All right then, compose a short poem to go along with our theme. The final line should be "was tentacles all along."

Inner (Y/N): Seriously? What is his teaching talking about his tentacles?! I hope Raiden will cut him into pieces like cooking.

He deadpanned at the octopus.

Making them confuse.

He looked at the young girl with black hair and light eyes brown raised her hand.

Idol girl: "Was tentacles all along"?

Octopus Sensei: Indeed! When you're finished, bring them to me. I'm looking for proper grammer and whether you've conveyed the tentacle's beauty. As example... "Interpenetration: A life lived vividly, powerfully wasn't a blooming shower scattering cheery petals in the garden--it was the tentacles.

Sign: "Not the storm of garden's snow/of flower moving on. But spouting there instead/was tentacles all along." 

Making them frown and disappointed at the teacher octopus about what they're doing for the poems.

Poor boy: "It was tentacles"? Really?

Octopus Sensei: Once you're done, you're free to go home!

Orange hair wavy Girl: How are we going to write about it?

Octopus Sensei: Now, now -- aren't any marvelously slithery phases going to mind? Slither, slither, slither, slither!

Causing (Y/N) to have tick marked on his head with annoyed expression.

Inner (Y/N): Okay, that's guy is my number one list to kill!

Playboy: Enough with the damn slither!

Green hair girl: Sensei, I have a question for you!

Octopus: Yes, Kayano?

Kaede: This weird to ask a question now, but... what's your name?

Making the octopus to be off-guarded.

Kaede: How else can we tell about teacher we're talking about?

Octopus Sensei: My.... name?

Baseball boy: Now that you mention it...

Manga girl fan: .... he never tell us about it.

The octopus started to stretching on his head.

Octopus Sensei: Hmm... I don't really have the kind of name you tell people. Go ahead and give me a name.

Playboy: You sure about this?

He sweatdropped at him.

Octopus Sensei: Right now, focus on your homework.

Kaede: Yes, sir.

She cheerfully smiles at him.

Octopus Sensei: Meanwhile, I'll take a rest for a bit.

He goes for a sleep his body changes a color into light pink.

(Y/N) writing his work until his eyes focusing on Nagisa gets up from the sit secretly attacking with Ryoma's advice to give him.

Octopus Sensei: Finished already, Nagisa?

Making Ryoma grins knowing his plan will works and Kaede gasped and (Y/N) narrows his eyes knowing he gets the bad feeling about this.

Inner Nagisa: After lunch, right around time we get sleepy, his face goes light pink. He was a little slow responding to Kaede's question too. This might be when he's at his vulnerable. us prep-school failures are always thinking, "We gotta get back at'em somehow." You can do it if you try.

Making his classmates staring awe and confusion what is Nagisa doing expect for Ryoma knowing his plan will worked and (Y/N) knew Nagisa is crazy to blow himself to suicide to killed the Octopus.

Nagisa take out his Anti Sensei knife attempting to stab him but bad luck before Nagisa could stab him but the Octopus blocked it in quickly with his tentacle holding his wrist.

Inner (Y/N): Nagisa you fool.

Octopus Sensei: I told you to be more inventive!

Octopus using the napkin to protect himself from the dagger.

Inner Nagisa: We had to prepare ourselves by means any necessary. 

Nagisa smiles himself sudden hugging on the Octopus but he's wearing the grenade filled with BB around his neck as the suicide to killed Korosensei.

Boom!

All the students cover their eyes and ears as for Ryoma and his friends shouted in excited.

Ryoma: We did it!

Ryoma's friend: 100 billion dollor!

Ryoma's friend 2#: Cha ching!

Kaede: Nagisa!

She cover her mouth horrifed what happened to her cru... I mean friend.

Ryoma: Serve you right!

Yuma: Terasaka!

Hiroto: What have you done?!

Two boys looking at their classmate in anger.

Ryoma: But he never expected a su...

(Y/N): You mean him, right?

Making them flinch and shocked of hearing this. Making them to their heads before their eyes goes open widened in shocked and disbelief.

Seeing (Y/N) save and manage to let Nagisa escape from the bomb but he unconscious of what happened.

Yuma: You!

Kaede: H-H-He....

Toka: (Y/N) you s-save....

Baseball boy: You save Nagisa's life!

(Y/N): Yeah.

He nodded his head and kept his neutral expression before he turn death glare to Ryoma and his pal are gritted his teeth and anger with a hint of.... fear, frightened and death.

Ryoma: You bastard! What the hell you do?!

(Y/N): Oh just few trick on sleeves...

He sly smirks before raising where his hidden blade before moving up the sleeves revealing he's wearing high tech wrist gauntlet.

Science girl: That's!

(Y/N): Yeah, thanks to the technology to my friend and his mentor. I used the grappling hook mode to grabbed Nagisa from his death.

Flashback

Before the explosion could causes it. But luckily (Y/N) stood up his chair in quick move, he throw his arm in quickly using the grappling wire at Nagisa's back grab it.

He throws the knife at the string is cut tried it.

Pulling Nagisa away from the explosion to his safety.

Flasback ended

(Y/N): And that's how I save Nagisa.

He said with smirked.

Kaede: (Y/N), you save Nagisa's life, I can't thank you enough!

Making everyone relief and a smiles seeing (Y/N) save Nagisa's life. Until Nagisa woken up, he looked everyone and surprised he's not even hurt.

Nagisa: What happend, why I'm not hurt?

Kaede: Nagisa!

She sudden hugs him making blush a little.

Nagisa: Kayano?

Kaede: Thanks god for you to be survive! If (Y/N) hadn't save you, you wouldn't be dead!

Nagisa slowly turns his head at (Y/N) in surprised.

Nagisa: Y-You.... save my... life?

(Y/N): Yeah, if I hadn't use my grappling on you but seriously don't do that again. You couldn't yourself.

Nagisa thinks for the minutes for the bit before he small smiles at (Y/N) for appreciate saving his own life.

Nagisa: Thank you.

Made (Y/N) replies with small smiles.

(Y/N): Yeah.

Expects for Ryoma still pissed up at (Y/N) for ruining his plan.

Ryoma: You bastard!

He rushed to (Y/N) before throwing his fist directly at (Y/N) kept his cold expression. Making everyone gasped.

Toka: (Y/N)!!!

Before Ryoma attempting to punch at (Y/N) but (Y/N) caught Ryoma's fist on his hand, he tried to break but he struggle to escape when (Y/N) kept holding on his fist standing there.

Ryoma: What the... Gaaaah!

The crack sound were heard coming from Ryoma's hand was cracking by (Y/N) using his strong hand breaking Ryoma's fist.

Ryoma: L-Let go!

(Y/N) then flip Ryoma on the ground using the Judo Flip. When Ryoma rough landed on the ground, he tried to get up but he felt like he was pin down holding him back it was (Y/N) place his feet on Ryoma's back.

He struggled to escape from (Y/N)'s holding him down.

Ryoma: Guys, helps me!

Before his friends attempting to help him but they seem back off seeing the eyes of.....

Murderesses eyes filled with death and bloodlust, making them shiver in fear seeing the eyes of monster and devil, and Ryoma stop struggling shiver in afraid and seeing the eyes of the monster.  And Nagisa staring at (Y/N)'s eyes in curious.

Ryoma: W-What the hell are you?!

(Y/N): Your worst nightmare... oh and you made a terrible mistakes.

He let go of Ryoma's back, he gets up quickly holding her his injury back is.

Ryoma: You bastard! What the hell you saying we're made a terri....

???: Ufufufufu!

Until they head a familiar noises, making their eyes goes shocked before looking up at the ceiling reveling the Octopus were on the ceiling.

Octopus Sensei: That's right, you did made terrible mistakes, Terasaka, Yoshida and Muramatsu.

Making them fazed in fearness seeing their teacher turns into anger and unfazed to (Y/N) looking at the skin color of the expression.

Inner (Y/N): We don't have to look at the color of his face that's all to know. It's pitch blacked meaning he's furious.

Octopus Sensei: You three... you behind this, yes?

Making them afraid seeing his expression making a lied thinking it was Nagisa's idea.

The octopus vanished using his Mach 20 making wind blow everywhere again, covering their arms. The Octopus went to the different direction of the places, before return back to the schoool.

Ryoma: H-He's gone!

And he reappeared next to them making the powerful wind blow everywhere covering their faces before they looks down and recognizes them their names plate from their houses.

Ryoma's friend: Our names plates off our houses?!

Octopus Sensei: My agreements with your governments says I won't harm you. But if you try another assassination like that one again... I might just harm someone else

Dropping off the house plates.

Octopus Sensei: Likes your family, friends or I could wipe out the whole planet apart from you.

Making them frightened that the ocotpus made a threatening only for (Y/N) unfazed for that. 

Inner (Y/N): In about seconds ago, and that we're knew about. There is no more running to the ends of the humanity and our home planet Earth for us. If they're really want to run for us... our mission is.... to kill him!

Seeing the image of moon into crescent and in space where the octopus is.

Ryoma: What's your deal anyway?! You're just a giant pain in the ass! Showing up all "Now, I'm gonna blow up the Earth" and "Assassinate me"! What's so wrong with using an annoying method to kill an annoying guy?!

Suddenly his expression changes into correction with a red circle around his face and orange returns to his same smiles.

Octopus Sensei: Annoying? Hardly. Your idea itself was a very good one.

Until he turns his head to (Y/N) kept his neutral looks and the Octopus smiles at him for impress saving Nagisa's life.

Ocotpus Sensei: You as well, (Y/N). You managed save your allies and comrades when the others had no regard for Nagisa's welfare. You managed to grab him away before you remove from the grenade and explosion even through I coulda save him by myself.

(Y/N): It's no problem.

He nodded his head.

The Octopus grinning and impress for (Y/N) saving his classmate's life and tell them he still have hopes for everyone can be improve and find to attempting to assassinate and remember of his past, there is a young man holding the woman in his arms before she dies and fall in love with her and another memory when there is a middle age with a eye patch on his right eyes, a metal shard on his right forehead reassemble like a horn and the robotic limb arm on his right hand. Before kneeling down rubbing the young boy's hair with a kind smiles.  

(Y/N): Yeah, we'll kill you... before the end of the earth.

Making him giggled at his statements.

Octopus Sensei: I like to see if, you tried.

He grinning with a green stripes.

Octopus Sensei: Once you killed me, you're free to go home in early!

Class: Ehhhhhhhhhhhhhhhhhhhhhhhhh!

Girl: Just like that!

Boy: You know we're can't kill you!

(Y/N) and Nagisa returned to their seats.

Inner (Y/N): I'll kill..... for the sake.... of the humanity.

They complain, they'll never kill or defeat him won't leave home, early.

Kaede: An unkillable teacher... "Korosenai"... "Koro" Oh! How about Korosensai?!

Nagisa: Koro Sensei?

Making Koro Sensei gotten his attention turning to kids gave them a name for him.

After the school bell, it was time for them going to home.

(Y/N) grabbed his bag going to the house until Nagisa comes to him.

(Y/N): Hey, Nagisa.

Nagisa: Hey, (Y/N). You wanna be friend?

(Y/N): Friend?

Nagisa: Yeah, friend.

He raised his hand waiting for the handshake.

(Y/N) thinking of the painful memory when he was a child, kidnapped by the Patriot forcing into a ultimate weapon and child soldier after Snake rescue and save him.

(Y/N): Yeah, friend.

He replies with a kind smiles before shaking hand on Nagisa. Making him smiles in happily. Making them laughing before placing on around Nagisa's neck.

(Y/N): How about, going to my place? I'll makes some milkshake for you guys!

Nagisa: R-Really?!

(Y/N): Yeah, you guys can came out now!

He shouted out revealing their classmates peaked out their heads out of the building people were eavesdropping expect for Ryoma's friends.

Nagisa: Y-You guys!

Kaede: Sorry, you guys. We were.....

(Y/N): It doesn't you guys! Everyone have a drinks!

Class: Really?!

(Y/N): Yeah!

He laugh for a bit.

When (Y/N) and the others are walking for his house, they were chatting and laughing and they arrived to the house. They were amazed and impress at awe and bit surprised and confuse for seeing the military helicopter.

(Y/N) showing the room, where he'll be making the milkshakes.

They were surprised seeing (Y/N) making a milkshakes on the Cocktail shaker and pour their drinks on the glass of cups.

(Y/N) and class: Cheers!

They all celebrate for their interesting years.

And mosting surprise that, the house is closer to the Old Campus school making them surprised.

At Toka's house, she laying down on her bed, thinking about (Y/N).

Toka: (Y/N)... Such a nice guy the way he defending and saving Nagisa from his death. He so... handsome. Do I think, I really like (Y/N)?

She thinks for a minutes before she blushed in madly before stood up her bed and realizes her mistakes.

Toka: No! No! No! No! It's too impossible.

She shook her head still thinking about (Y/N) on her minds.

In the different location.

There is a man sitting down in the chair where he's looking at the computer, placing his fingers under his chins.

The news saying "White Shadow, Terrorist Attacking City in Europe!"

???: Hmm.

He thinks for the minute before he stood up turning away revealing...

Drebin: This might be get interested. Who do I call? Oh! I know! Maybe I just called the "New Snake".

He smirking for thinking about (Y/N).

To Be Continued