Bet no one ever approached Harry and said "Yer an assassin, Harry!"

If they did, it would have been a much different story. What if they did it in reverse? Hogwarts School of Assassins? Then there could be one boy who has to defeat the Assassin who went against the code of the assassin by traveling to other worlds and becoming a wizard!

What the heck am I talking about?

I do not own Harry Potter or Assassination Classroom

The mood was sober for the remainder of the day. The class wanted to know about Koro-sensei's past now. Maybe they did deserve an explanation, Harry thought. After all they'd been through…just who had they'd been ordered to kill? What was Koro-sensei? An alien? An experiment?

Why did he want to blow up the world?

Koro-sensei received a text from Kaede, to meet her at seven o'clock in the fields of zebra grass in the back hills.

The class all waited around until it was time to go, and then they met up there, waiting for the final confrontation.

Kaede was already there.

"Kayano-san, it's far too dangerous to keep using those tentacles." Koro-sensei told her, "If you do not remove them and get treated immediately, your life could be in danger."
Just like Iruka's had been, Harry recalled.

"What are you talking about? They're in excellent condition." Kaede replied.

"Kayano…" Nagisa spoke, "Was it all an act?"

Even for an actress…Harry couldn't believe that it was.

It turned out…Kaede was trying to avenge her sister. The previous teacher of E-Class. Harry had a feeling it was a misunderstanding. He didn't know whether he was right or not, but…

"I had a friend." Harry spoke up, "When he was in school, he was accused of murdering a girl. He was the nicest, gentlest person I have ever met. I believe…Koro-sensei is a killer."
That drew all their attention to Harry. Some of them let out a gasp of disbelief.

"But," Harry continued, "I don't think he killed your sister."

"Urasai!" Kaede shouted at him.

But Harry continued,

"I think…Koro-sensei was an assassin. I think he was paid to kill people. It all made sense to me long ago. I guess, I always took that information for granted. He knows too much about assassination. The way he draws information and parallels assassination with other things…it makes me think it's a topic that he knows more than any other topic. Like it's something he's done his whole life."
"Then…why do you think he didn't kill Yukimura-sensei?" Karuma looked over at him curiously.

Harry bit his lower lip,

"I think…because he chose to go to E-Class." They were all looking over at him. Harry's eyes had widened with realization, "That's right…an assassin…is a professional. It seems strange…that he'd actually be so close to his victim that he'd take over her job. It's all wrong somehow…I don't understand it, but…something in the back of my mind says it's like that."

"You have…a lot of faith in me, Harry-kun." Koro-sensei said, "I want to tell you what really happened…and I want everyone to be there."
It was Karuma who spoke up next,

"Are you really okay with this? Do you really think this is the best way to resolve this as an assassin?"

Iruka spoke now,

"Your body probably feels hot, with just the nape of your neck feeling cold. It's the abnormal metabolic characteristic of those with implanted tentacles. If you fight in that condition, you'll really be in trouble. You'll lose control with the heat and intense pain."
He was speaking from experience, Harry could tell.

"Your life force will be sucked out by the tentacles." He finished.

And then her tentacles caught fire.
"Shut up. Outsiders should be quiet." She said fiercely, "No matter the weakness or shortcoming, if it can be polished, it can be a weapon." She smiled, "If my body's so hot, I can't handle it, then I'll make it even hotter and gather all the heat in my tentacles!"
"No!" Koro-sensei said, "Anymore and –"

It was too late. A circle of fire formed around Koro-sensei and Kaede, separating them from the other students.

"I'm in the best condition right now." She breathed, "My body's so sensitive that I won't miss any movement."
"Stop it, Kayano!" Nagisa protested, "This isn't right! I learned too…sacrificing yourself isn't right! It only leads to bad things."
"I'm not sacrificing myself." She giggled, "I just need to kill him."

She launched into the air, flaming tentacles spinning around her, attacking Koro-sensei who was barely capable of moving out of harms way.

"Sugoi…it's like flaming bars of lava…"
"In a mere ten or fifteen minutes of battle, her mind is already being taken over by the tentacles." Iruka murmured, looking deadly serious.

Kaede laughed crazily,

"What do you think, Koro-sensei? My head doesn't hurt anymore. The pain actually feels good now!"
Her eyes had changed to being nearly completely black.

This was dangerous, Harry thought. If this continued…then…

"It's too late now, if they've already taken her over that much." Iruka said, "Whether or not she completes her revenge."
"What if she was cooled down?" Harry asked him suddenly.

"Cooled down?" Iruka wondered, "That's not possible."
"What if it was?" Harry wanted to know.

He didn't want to…but…lives were on the line and a secret wasn't worth that.

"Is she could be cooled down…theoretically…" Iruka put a hand to his chin, "Maybe…"
"Eh? What's that?" Nagisa wondered.

An image of Koro-sensei's face flashed in front of them.

"It's a clone." The face spoke, "Right now, I can only make a clone of my face. In the stake Kayano-chan is in right now, no doubt…she'll die. However, there is a chance. As long as her bloodlust and the bloodlust of the tentacles match up they can't be removed, however, if that bloodlust is quelled for a moment, then I can take them out safely. I'm going to let her hit me in my most vulnerable spot. My heard, just beneath my tie."
So that was where it was, Harry thought.

"I might be able to survive for a few more seconds…possibly. In that time, one of you is going to have to quell her bloodlust. Distract her from it. From anything other than assassination."
"But…but won't you die?"

"Yes." Koro-sensei said, "But…"
"Forget it." Harry said.
He'd heard enough.
"Eh? H-Harry-kun, don't!"
He looked over at Karasuma and Irena.
"Gomene, Irena-sensei…It seems…this is the end of the deception for me. I don't think Kaede-san's life is worth this secret."
Irena's eyes widened, then narrowed,

"I understand. We'll lose an advantage…but in this case…Do it."

They were all looking at Irena in confusion, and then over at Harry.

Harry let out a sigh,

"I really didn't want to have to reveal the truth like this." His eyes glowed green. He waved his hand and suddenly, the flames vanished completely.

"Eh?" Kaede looked over at Harry, "What…was that? What did you just do?"

Frost decorated the ground where the flames had just been.

Kaede gritted her teeth,

"Are you…standing in my way…Harry-kun?"

"Not quite." Harry said calmly, "But…then again, I don't think you're in the sort of state of mind where you'll be able to understand, so…" he jumped out of the way as her tentacles came down on where he'd been. The crumbled earth was transfigured into a bunch of birds which flew at her.

"EH!?" The class exploded with confusion and pandemonium.

Harry then cast a bolt of yellow light at Kaede while she was distracted.

There was a long pause when all of a sudden, Kaede let out a snort and then…she started to laugh. Falling to the ground and rolling around.

Thank goodness…he wouldn't have been able to fight her all out. Just a few distractions here and there and…Well, one of the lesser known effects of the tickling charm was that it got rid of pain while the victim was being tickled.

"I cast a tickling charm on her." Harry explained, "I doubt she'll be able to focus on much else right now."
"Eh?" Koro-sensei looked back over at Kaede and then…he quickly got rid of the tentacles.

There was silence and then,

"W-w-w-w-what the heck!? Th-the fire froze and there were birds and yellow lightning and – and Boom!" Koro-sensei stuttered out.

"Uh, yeah…" Harry trailed off.

Karasuma stared at Harry, then looked over at Irena,

"Explain. What's going on here?" He demanded.

Irena smirked, apparently proud to know something no one else knew,

"Harry-kun isn't a normal human."
"Eh?" They all turned to Irena.

"Don't tell me…you have tentacles too!?" Okajima pointed at Harry.

"No…" Harry shook his head, "I didn't get my powers in a lab, but rather…I was born with them."

"Sou, sou." Irena agreed, nodding her head, "Harry-kun's mother was a witch. His father was a wizard from an old line. Harry is something called a half-blood wizard, if that makes sense."
"W-wizard!?"
"EH!?"

"L-like…magic?"

"Un." Harry nodded, "I'm sorry I never said…technically, it's illegal to reveal magic to outsiders. That's how the witch burnings began, after all." Harry paused, "Since this was a life or death situation though, I shouldn't be punished."
"S-so…wizards now too?" Fuwa who was the most accustomed to the strange a bizarre actually looked like she was in shock, "That is so out of place in this manga."
Was that a fourth wall break? Harry wondered.

"Are there any dark magics?" Hazama asked him quickly.

She was the girl most obsessed with the occult and was a little bit gothic in style.

"Er, well…" Harry shifted uncomfortably, "Dark magic is considered illegal." He was surprised everyone was paying attention to him, "Shouldn't we be paying attention to Kaede-chan?"
"She's fine." Karasuma narrowed his eyes at Harry, "What do you mean, dark magic is illegal?"
He was stuck on that?
"Eto…well, dark magic is the most deadly, destructive and twisted magic you can use. It's normally magic designed to torture or cause the most painful death possible." Harry shifted uncomfortably, "My parents both fell to the Avada Kadavra. A curse that kills instantly. If you're hit by it…even if it's a graze, you're dead. You're completely healthy otherwise, except for the fact that your heart just…isn't beating. Even wizards don't entirely understand how it works…"
"Wait a minute…didn't you use that spell on me before!?" Koro-sensei remembered.

"I didn't hit you." Harry said with a shrug, "Besides…it's not the worst dark spell out there. It is illegal…but certain dark spells are allowed to be used under certain circumstances. In this instance, the Avada Kadavra is allowed to be used, but the other two unforgivable are not."
"Unforgivable?" Nagisa repeated.

Harry let out a sigh,

"The Imperius curse takes away free will. You can use it to control a person completely. The Cruciatus curse is also known as the torture curse. It's…the worst pain you could possibly imagine…times a thousand. I can't think of any circumstances where such a curse would ever be acceptable to use. Out of the three, I'm never going to use it no matter what."
"And you were aware of this?" Karasuma looked over at Irene.

The blond smirked,

"Of course, I was."
Harry gave her a dry look. She hadn't found out that long ago…

"Why didn't you report it?" Karasuma frowned.

Irena shrugged her shoulders,

"Well…the less people knew the bigger the advantage, nee? Besides…this isn't something that we should be interfering with."
Karasuma frowned, then looked back over at Harry.

With a power like that…maybe they had trump card they hadn't even realized they'd been holding.

….

00000000000000000000000

…..

Harry's magic wasn't the biggest bomb dropped that night though. Koro-sensei's past came to light. He'd been human. An assassin who'd been brought to a lab and experimented on. He'd met the former teacher of the E-Class, Yukimura who'd been engaged to the head scientist. The two had formed a strange bond and then…a rat who had been under the same experiment had been proven to be unstable. It had been launched off into space and…blown up the moon. Koro-sensei was destined for that same fate.

He would blow up the earth because the experiments done on his body.

No wonder his past had been classified.

The whole thing made Harry feel sick to his stomach. Judging by the expressions everyone else was making…he wasn't alone.

"I think we should save Koro-sensei." Nagisa said in the woods by the school the next day with the rest of the class there.

They'd all been dragged out to talk about this.

Harry looked down at the ground, he closed his eyes and shook his head.

"The world ends in little over ninety days…We'd need a lab. All the data and research on Koro-sense has been destroyed too. Something like that would take a long time. Longer than the time we have. Besides…this is his last wish, isn't it?"
Harry had come here to learn to be a killer. He knew…he was going to have to kill someone eventually. He just didn't think it would be someone he'd be fond of.

Harry had always been more of an avenger than a savior, thinking back on it…He'd been looking to avenge the death of his family. In fourth year he'd been avenging those people that had become petrified…Maybe they could avenge Koro-sensei too. Maybe.

As the argument escalated, eventually Koro-sensei came in and brought in some paintball things. They'd be solving the matter with a war. Whichever side one, they had to go along with that no matter what. No arguments.

Did he really want to kill Koro-sensei?

The kill team…or the save team?

Harry stopped in the middle and shook his head. He looked over at Koro-sensei.

"I don't think I can do this."
"Eh?" Koro-sensei looked at him curiously.

"I don't think I know which path is right…" Harry paused, "I had a really good strategy worked out to kill you, Koro-sensei, but I also wonder if I want to kill you too. I think…I need to sit out."
"Eh?"
Harry shrugged his shoulders, not really knowing what to say.

This was it…

They spent the whole day fighting. Harry sat off over a cliff with Koro-sensei who was watching the whole thing through a pair of binoculars.

"By the way, Harry-kun…"
Harry looked up at his teacher.

"Do you own a flying broom?"

Harry nearly fell off the cliff.

"I do…A Firebolt. One of the fastest brooms created…but I didn't bring it with me…"
Koro-sensei looked disappointed. Irena gave him a deadpanned look.

The battle was all decided by Nagisa and Karuma. It was a big fight, but at last, against all odds, Nagisa won.

They were going to try to save Koro-sensei.

….

0000000000000000000000000000000

….

The months passed. After mountains of research, and a journey to the freaking space station! They had discovered there was only a small chance that he actually would explode as they'd previously believed. A one percent chance that he would blow up the earth.

They were all very happy.

But…it wasn't going to end here…was it?

Koro-sensei packed them all in a giant bag and took them all around the world taking pictures. Harry had never been to so many places before. It was all rather bewildering.

Then, March sixth came.

There was a big flash of red light in the sky right by their school. The news started talking about a monster taking junior high school kids hostage.

Harry took off running towards the school. The other kids had had the same idea.

They met up and were flocked by news reporters. Thankfully, they were saved by Karasuma who brought them along to a tent full of military equipment and personnel.

"It's a weapon." He said, "The one they were preparing all this time."

They should have seen it coming…but they hadn't.

Koro-sensei was going to die.

"Their last resort?"
"The barrier, you mean?"
"That's only the cage to keep him trapped." Karasuma told them, "In a week, they'll use a high-powered laser to kill him."
"No way! What about our assassination?" Maehara argued.

"You tried your best so far, now leave the rest to us." Karasuma said.

"Oh, now you're the big man and 'leave it to us!'" Terasaka shouted angrily.

"We're completely in the dark!" Kurahashi looked upset.

"And that statement made it sound like it was all Koro-sensei's fault." Kanzaki's sadness was prominent in her voice.

"Karasuma-sensei…please let us go." Nagisa pleaded with him.

"There are elite troupes posted in the town and around the mountains." Karasuma responded to their pleas, "No more openings for you to use to your advantage." He closed his eyes, "Give it up."
"No!" Nagisa shouted, "There's so much we haven't talked about with Koro-sensei. So much we still want to do! So please, let us ge –"

Karasuma attacked him, forcing him to the ground,

"I can't let you go! This is national policy! Now, you listen closely, Nagisa. Don't give me a hard time." He pulled him up by his collar, "Do you understand?"

"It's no use, Nagisa." Karuma spoke calmly, "In the end, he's just another company man. When push comes to shove, he'll just follow orders to save his own skin."
"That's exactly right." Karasuma said, causing them to all look at him with surprise, "My position allows me to protect people when they need it most. Besides, even going by my own convictions, I think he should be killed after all." He started walking away, then paused at the soldier by the door, "Arrange transportation and escorts for them at once."
"Sir." The soldier saluted, then exited the tent as well.

The kids were all left alone.

"Dammit!" Terasaka looked down angrily, "Karasuma that bastard."
"Terasaka…" Nagisa began, he looked like someone with a plan, "Karasuma just said 'don't give me a hard time' very clearly."
"Yeah? So?" Terasaka still looked pissed.

"Remember what he said earlier?" Nagisa asked, "If I ever had a hard time, I'd trust you without hesitation. So…I think 'don't give me a hard time' means he's counting on us to handle things."
"Not so sure." Harry said, "But if you think so…"
Really, what was with people in Japan and all their subtle hints. Everything needed to be subtle with them…He had trouble picking it all up.

0000000000000KILLUA0000000000

The mountain was their home turf. All clad in camo gear, they were unstoppable. Flying through the air and trees (something Harry hadn't thought possible without a broom).

He took out nine different military men (he wondered how much trouble he was going to be in for doing this later).

There were traps all over the mountains…although they'd been intended for Koro-sensei.

Nagisa and Karuma took out a heavy hitting killer together. The first time Harry had seen the two of them team up.

Karuma was the one giving the orders. He was the most strategic. Harry was as well, but…Karuma was more willing to take the reigns than he was.