▄︻̷̿┻̿═━一 • • • • • • • • • •

The sounds of keys from the laptop of Karasuma filled the small, quiet room. He sat there doing his own business and of course work, reading an email that he had receive.

Your second transfer student will arrive on 6/15.

He is our long-awaited trump card.

There will be no need for an advance briefing; simply comply with his attendant's wishes.

Karasuma just stared at the message with an unexpressive face. But for sake's, he will comply. Maybe this student will be able to kill Koro-sensei.

Understood.

Thick dark grey clouds were dragged down heavy rain. The rain was pouring down over the city, and it seems the heavens has no intention of stopping the falling heavy rain. It was unlike any other day. As for the young Miyazaki child feels as there is more to this day, she just can't grabbed to know why today she felt uneasy and was putting her guard up.

"All right, class, time for homeroom." Koro-sensei forcefully said but his voice was strange and deeper for some reason. "Please take your seats."

Everyone sweatdropped when they took in Koro-sensei's appearance. His head had grown bigger than the usual, this head looks like balloon filled with helium.

'He seems... larger than life today.'

"Koro-sensei, can you explain why your head is approximately thirty-three percent bigger?" Ritsu queried after analyzing their over grown lemon head of a teacher.

"Ah. It's soaked up lots of moisture thanks to the high humidity," Koro-sensei explain to his confuse students, squeezing all of the water out his face.

Koro-sensei's weak point #14:

Prone to dampness

"What are you, uncooked rice?!" Okajima exclaimed.

"Now, then." His voice when back to normal as well as his lemon head face. "I believe Karasuma-sensei told you another transfer students is coming."

"Yeah. Probably another assassin." Maehara sighed, as he wasn't in to the news. expecting it as another assassin like Ritsu.

"I got into a spot of bother taking Ritsu-san too lightly last time." He then pointed a tentacle to the 2D female. "I won't make that mistake again." Koro-sensei declared, while Ritsu just giggled. "in any case, it'll be nice for you to have a new classmate."

Hara then turned to Ritsu to ask her a question. "Hey, Ritsu, Have you heard anything? You know, as a fellow transfer assassin."

"Hai, a little." Ritsu replied. "Originally, he and I were to be introduced together, I would handle long-range arracks, and he, close-range combat. Together, we'd drive Koro-sensei into a corner." The atmosphere of the room became a bit tense and gloomy as Ritsu continued her explanation to her fellow classmates. "However, those orders were canceled for two reasons."

"Really? What were they?" Hara asked, letting the lilac female to further explain.

"Firstly, his adjustment took longer than expected," Ritsu was lacking her cheerfulness personality when she proceed to speak. "And secondly... I lack the capability to provide him support. As an assassin, I am overwhelmingly inferior to him."

'This coming from Ritsu, who blew off Koro-sensei's finger.' Nagisa thought, As he and the rest of the students stared at their AI classmates, letting the words sink in their minds. 'What kind of monster is this guy?'

The door to the classroom slid open, making the young teens gasp at the noise, their eyes now setting on the new arrival, the students sat in their seats not really saying anything. There stood a man covered from head toe an all white attire (exclude the shoes) his face wasn't visible since this person wore a mask to hide his identity. But his eyes... there....

'Menacing eyes...' Hanako internally grumble, not liking this man already, it gave her chills running down her spine. She inwardly glared at him, she clenched her fist, stopping herself from doing irrational actions.

"What's with the outfit?" Kataoka was the first to break the long silence.

"Is that the new student?" Okano quietly added.

The figure the drew his hand forward, making the students grow tense. The mysterious person closed his raised palm then Poof! A dove randomly came out of his hand. Taking everyone by suprise. The man's eyes then turned into what seemed kinder and let out a carefree laugh, lessening the tension that was build up earlier. "Gomen, gomen. Didn't mean to frighten you," The man politely apologized, putting the creature away. "I'm not the new student, I'm his guardian. You can call me 'Shiro', meaning 'white'."

"Some guy all in white comes in doing tricks? That'd spook anyone!" Kayano sheepishly said.

Nagisa hummed in agreement. "Maybe not Koro-sensei, but-" The boy turned his attention in front, cutting his own words when he saw the state that Koro-sensei was in. He was all melted and grey, a pile of liquid. His face was nothing blank and was stuck at the corner of the room.

"Koro-sensei, you scaredy-cat!" Isogai yelled at him, the said teacher just grinned in return.

"He's spooked enough to use his liquefy trick!" Maehara added.

Koro-sensei's Weak Point #15:

Gullible about rumors

"Well, Ritsu-san was telling all those scary stories!" Koro-sensei tried to cover himself from the accusation. "N-nice to meet you, Shiro-san," The octopus greeted, sliding off the wall and returning to his original form. "And where is our new student?"

"It's a pleasure, Koro-sensei." Shiro said, bring out a bar of candy it seemed from his sleeves. "He's a rather unique child, in personality and otherwise. He then walked into the classroom as none of them notice Karasuma watching them from the window. "I'll introduce him myself."

'He's awfully evasive.' Nagisa thought, as he keep his eyes on him.

It was then Shiro came to abrupt stop, his eyes landing at the students who were sitting in front. With the sudden staring contest, Hanako felt even more tense when she notice he was looking at them, and she hope it wasn't Nagisa. If he does anything that involves the bluenette, she was ready throw herself in front of him.

"Yes?" Koro-sensei asked when he notice that male grew silent and was just standing there.

"Oh, just..." Shiro started averting his gaze to Koro-sensei, handing him the bar of candy to him, the later gladly accepted the offer. "You've got good kids here. I'm sure he'll fit right in." He faced the door, as everyone followed his gaze to the door of the classroom, waiting for the arrival of the new transfer student. "Now to introduce him:"

"He's not coming in from the door." Hanako quietly said, staring at the wall behind them. Karma perked up his head to her raising a brow to question her statement. "Behind us." That's what she only said, not tearing her eyes from the wall, making Karma turn his attention to where she was looking.

"Oi, Itona! Come on in."

The walls behind the classroom suddenly burst into pieces, creating a hole, this caused the students to gasp, as they where taking by suprise. Came in a boy with light-blue tinted white spiked hair, eyes are yellowish-amber color, he wore the Kunugigaoka school uniform, minus the white shirt and instead a red one, with a fluffy scar added. The transfer student or Itona, walked casually to the seat between Karma and Terasaka and sat there, like he's grand entrance was not a big deal.

"I applause the grand entrance." Hanako sarcastically applauded the boy under her breath, unfazed by the surprise entrance.

"I won." He uttered in a monotonous manner, the look on his eyes as if he was ready to slaughter who gets in his way. "I proved that I'm stronger than that classroom wall."

"Use the damn door!" The students yelled out.

Itona ignored them and continued to speak to himself. "That's all that matters. That's all."

'We've got ourselves another handful!' Terasaka internally groaned.

'Even Koro-sensei doesn't know how to react.' Nakamura mentally said.

'He's not smiling... not serious...' Isogai tried to decipher Koro-sensei's expression.

'What's with that half-assed expression?!' Maehara hissed.

They couldn't really tell what kind of expression Koro-sensei was wearing. Was he shock? Dumbfounded? Retard look? All I can say is what the fuck.

"This is Horibe Itona. Please call him Itona."

'A white-clad guardian and a transfer student who's impossible to read.' Nagisa thought, he was still processing on what happened, then turned to Itona. 'We're in for some extra-stormy weather.'

"Ne, Itona-kun, something's been bugging me." Karma uttered in his usual playful tone. "You came in from outside, right? Empty-handed? It's raining buckets out there, and yet there's not a drop of it on you."

The class all settled to stared at their new classmate, realizing what Karma said was true, as he was indeed dry and wasn't drenched from the rain. For Itona, he briefly looked around the classroom before standing up from his seat and making his way to the redhead.

"You're probably the strongest in this class. But don't fret." Itona said, bending a little, making eye contact with Karma, while running his hand on Karma's head. "I have no interest in killing those weaker than me." He then removed his hand from his head, making his way towards the front and continued to speak. "The only ones I do want to kill, are those who could be stronger than me. And in this classroom, Koro-sensei..." He pointed his finger at him, the latter was munching the bar of candy that his guardian gave him earlier. "That's you."

Koro-sensei turned to him showing his grinning face, asking him a question. "When you say 'strong' and 'weak', I do you refer to fighting ability, Itona-kun? In terms of strength, you and I are world's apart."

"We're closer than you think." Itona claimed, drawing out the same candy bar, that Koro-sensei was eating, from his pocket. "After all..." He paused for a bit, taking a few steps forward to Koro-sensei. "We're brothers by blood."

The whole class, minus Hanako, gasped out of shock.

"EEEHHH???!!!!"

"B-"

"B-"

"B-"

"B-"

"B-"

"BROTHERS?!"

'Is it just me or does this scenario looked familiar?' Hanako mentally facepalmed, the scenario was very familiar.

Itona ignored their questioning screams and stares, as he tore a part of the wrapper with his bare teeth, then points the candy at the teacher. "The loser dies, Nii-san." It was evident that Koro-sensei was tense and in disbelief. "Siblings have no need for she's tricks. I will kill you and prove my strength." He walked towards where Shiro was, which happens to be just outside the door. "We face off after school. Here, In this classroom." Itona challenged closing the door.

It was silence for a moment. They were all staring at the door where Shiro and Itona was earlier.

Before all hell broke loose.

"Now hang on, Sensei! What's this 'brother's stuff?!"

"Humans and octopuses are nothing alike!"

"Yeah! How the hell can you two be related?!"

"All of that just doesn't make sense!"

"No no no no!" Koro-sensei stared to panic, raising two of his tentacle, trying to calm down the commotion. "I haven't the foggiest! I was born and raised an only child! When I asked my folks for a little brother, things got really awkward!"

"Wait, you have parents?!"

"How on earth did they copulate?"

"MIYAZAKI-SAN!!!!"

•

•

•

By the time lunch rolled in, the weather didn't look that it was going to clear up anytime soon. Not to mention the sudden revelation of Koro-sensei having brother fiasco, it made things more, weird? I mean, where the fuck is the logic for an octopus and a human boy be related?

"He's puttin' away that candy like nobody's business." Maehara stated. As he and everyone were silently eyeing Itona, who was busy munching sweets after sweets, mountains of candies and junk foods on his desk. "He's got Koro-sensei's sweet tooth, all right."

"Not to mention his unreadable expression." Isogai pointed out. So, perhaps that Koro-sensei and Itona were indeed brothers, maybe, even thought it's kinda wonky. "I don't even know which expression is more unreadable, if it's him or Miyazaki?"

"Nani?" Hanako turned to dark brunette boy.

"Oh! E-eh, I didn't say anything, Miyazaki! D-don't mind!" Isogai nervously laughed, trying to brush off the young girl's stare.

"That brothers thing sure has everyone comparing the two of us. Now I'm all antsy." Koro-sensei mumbled to himslef. His own pile of sweets and junk food on the teacher's desk. "I'll cheer myself up by looking at tge girly magazine I brought today." A small blush appeared on his face as he took put a magazine. "Ah, now this is for grown-up tastes!"

Everyone sweatdrops when they saw Itona pulled out the exact same magazine that Koro-sensei has.

"They even like the same big boobs!" Okajima exclaimed. "His credibly just skyrocketed!"

"Y-you think so, Okajima-kun?" Nagisa deadpanned.

"Oh, yeah!" The boy quickly replied, showing them the same magazine as the two in his hand. "All boob lovers are brothers!"

'Three brothers now?!' Nagisa comically sweatdrops.

"If they really are brothers..." Kayano started. "Then why wouldn't Koro-sensei know?"

Fuwa then puts a finger under her chin, trying to think of tge logical reason for this mess. "I bet it went like this..."

⌐╦╦═─ • • • • •

It was then the girl started to narrate and imagine. A story that was between a war full of Koro-sensei look alikes, fighting for the kingdom.

"Your Highness, the enemy army is upon us!" A soldier told the king, who was sitting on his throne.

"Then I have no choice!" The king said, calling for his sons. "My sons! You alone must live on!"

"Go on ahead, my brother!" Koro-sensei told his brother, pushing him to continue on running. "This bridge is the last thing that stands between the us and freedom!"

Just then, Koro-sensei was shot twice behind and fell in the water.

"Nii-san!"

"Nii-san!" Itona called for him, running beside the running waters, in attempt to save his brother.

"Never mind me! Just go!"

"My brother! Go forth and live!"

⌐╦╦═─ • • • • •

"And once they grew up, they began their destined battle without realizing they were brothers!"

"Okay. But why's the little brother human?" Kayano questioned.

"Um, like... a mutation?"

"You haven't explained the core issue here!" Kayano exclaimed.

"Mutation? The logic was just easily thrown out the window." Hanako facepalmed shaking her head.

"Hey! It can still work!" The short haired Fuwa tried to protest.

"You gotta dig deeper on your character backgrounds, Fuwa-san." Hara pointed. "And your plot needs a lot more work!"

By now, the girls were now making fuss about the story and making up stories to fit the scenario of them being brothers.

"There's more to a story than realistic!"

"More realism!"

"There should be a solid logical explanation to understand the story."

•

•

•

The rain was endless even when the school bell had chimed for the last time for today, but unlike the usual school days the students of E Class didn't went home straight away, for they had stayed behind to witness the fight that will be happening between their alien octopus teacher and the new transfer student. With all the desks pushed to the side to make a ring, enough room for the brawl, with the students standing behind the tables, including Shiro, Karasuma, and Bitch-sensei. Itona and Koro-sensei stood at the center facing one another.

Silence, surrounding them and only the pattering of rain was the only source of sound. Until Itona flung his scarf and blazer off in one swift motion, revealing his red sleeveless turtle neck.

"They arranged their desks into a ring?" Bitch-sensei questioned the set up.

"Yep. Like a real match." Karasuma simply replied. "I've never heard of anyone going about assassination like this."

"You must be sick of plain old assassinations, Koro-sensei." Shiro taunted the teacher. "She'll we set a rule, then? How about 'Stepping out of the ring means instant death'. What do you think?"

"The hell? As if the loser would ever keep their end of the bargain." Sugino spat.

"No," Karma quickly disagreed at Sugino's claim. "for him to break a rule we all witnessed would damage out trust in him as a teacher. That kind of restriction works especially well with this guy."

Hanako then added: "He had also said that he agreed that he will not harm any of the students, and that includes Horibe-san."

"All right. I accept your rule." Koro-sensei agreed. "However, Itona-kun, hurting the spectators will also result in a loss."

Itona complied, understanding the rule that Koro-sensei added.

"Very well. Start on my signal." Shiro raised his hand in the air. "Assassination..." Everyone held their breath in as they waited for the tge match to start. The man then brought his had down. "Begin!"

The fight starts.

Not even a second to blink, the left tentacle of Koro-sensei was cut clean, straight off. It all happened like in slow-motion, the way the cut tentacle descending down to the floor. Eyes wide as a saucer, faces full of shock expressions when they saw what they are witnessing right now.

Our eyes were all pinned to one spot-

And it wasn't our teacher's shorn-off arm.

'It can't be...' Koro-sensei stared horrifiedly at the young teen before him.

There before their eyes, were tentacles, sprouted from Itona's head, flailing insanely around the air.

'Tentacles?!'

Unbelievable.

Disbelief.

Shock.

That's how they felt. After seeing what really is this transfer student. Tentacles. Horibe Itona has tentacles, just like Koro-sesnei. And this new discovery left the whole students and adults, watching speechless as they stared at him.

"Itona-kun's hair..." Nagisa mumbles, trailing off.

"...They're made of tentacles." Hanako finished the sentence for Nagisa, glaring at the boy in front. 'I knew that there was something wrong with him. Is that how...'

'Oh, so that's how he stayed dry empty-handed in that rain-' Karma realized. 'He can bat away the drops with his tentacles.'

"Where?" The students all turned to Koro-sensei when he growled, his expression, let's say not very pleasant.
"Where did you get those..." He snarled, growing pitch black, eyes turning slitted red, his voice dangerously low, and just then he snapped. "Those tentacles?!"

"We're not obligated to tell you that, Koro-sensei." Shiro stated plainly, not even flinching. "But this ought to have convinced you: You have different parents and different upbringings, but you are nonetheless brothers."

'So, that is the meaning behind of them being brothers, because of the relation of having tentacles. But I want to know who and how he got this and why did this anger Koro-sensei?' Hanako had mentally questioning and theorizing on how Itona had got the tentacles and why is Koro-sensei angry. It was making her curiosity grew more and more. So many questions, so many theories, so many possible answers, yet, so many loop holes to it that it's giving her a head ache.

"My, what a scary face you're making." Shiro quietly chuckled. "Did you perhaps remeber something unpleasant?"

'Huh?' The silver head girl perked her head up to Shiro. ' 'Remember something unpleasant'? What does he mean? What is he implying about?' Hanako question herself again. 'It is... Is it possible that Koro-sensei and him had a history?'

"It would appear that you and I will need to have a little talk." Koro-sensei spoke with a stern voice, regenerating his tentacle.

"Unfortunately, you'll be dead by then." Shiro said, lifting the baggy sleeve, when all of a sudden a bright purple beam appeared. Making Koro-sensei stiffen. "Exposure to this pressure ray at close range triggers distant behavior in your cells."

Itona then conutlessly continued to strike Koro-sensei, gaining the upper hand of this fight. As Shiro continued to speak.

"Your whole body stiffens instantly. We know everything. All of your weak points."

"Did he get him?" Muramatsu questioned, when Itona stopped his attacks.

"No." Terasaka replied. Sighting the shedded skin of their octopus teacher. "Look up!"

He was hanging on the ceiling lights close to Ritsu and was breathing heavily.

"You've shed your skin?" Shiro hummed. "That's right. You did have that trick up your sleeve. However, Koro-sensei, we also know the downside of that process."

"Nyuah!!!"

Itona attacked once again, and it made Koro-sensei panicked and moved away from the ceiling lights and used his speed to avoid the incoming attacks of Itona's tentacles. Meanwhile Shiro continued to expose and exploit his weaknesses.

"Molting expands more energy than one would expect."

Koro-sensei's Weak Point #16:

Vulnerable after molting

"Consequently, the speed you're so proud of drops immediately afterward. And you've grown back that arm that Itona took in his first suprise attack." By now everyone was growing anxious, watching their teacher dodge and struggles attacks, he can't even seem to catch a breath.

Koro-sensei's Weak Point #17:

Vulnerable after regeneration

"That uses up quite a bit of stamina as well. By my calculations, you should be evenly matched physically around now. Moreover, use of tentacles depends greatly on one's mental state."

Koro-sensei's Weak Point #2:

Loses his composure rather easily

"And when one considers the shock of being injured by an unexpected tentacle, it's obvious who's in the lead now." Itona didn't stop his attacks. He showed no mercy to him. And Koro-sensei was growing tired from all of this, and in some point, he might actually, lose. "Furthermore, he has the support of his devoted guardian."

Koro-sensei's Weak Point #18:

Hardens upon exposure to a special beam

Shiro once again brought his hand up, to use the special beam, to harden the body of Koro-sensei. Just then, Itona jumped in the air, doing a spin, and used his tentacles to strike Koro-sensei, destroying several of his own tentacles. Making the students gasped.

Watching and listening to Shiro's lectured earlier made the silverette curiosity grew. 'How on earth does he know Koro-sensei's weaknesses? Who is he? Did he play a major part in Koro-sensei's past?' Hanako creased her eyebrows, wanting to know who really is this Shiro. She inwardly glared at the man, feeling her blood boiling, the anger that she badly wants to released and take it on to him. Nagisa has noticed the girls tensed behavior and body slightly shaking, seeing dullness behind the green eye. So, he took upon himself to hold her hand squeezing tightly as he could, making that she calms down. He didn't want another episode.

"Hanako, stop." Nagisa whispered to her. Her hands were both shaking from anger and Nagisa was wishing that she won't have a violent out burst, he can see that tears were threatening to fall from her eyes. He didn't know which one will show, so he grabbed her head and let it fall onto his shoulder as one tear had escaped, the bangs of Hanako's hair shielded her face from anyone, an exasperated sigh left her lips. The girl clinging onto Nagisa like he's her life source.

A chuckle left Shiro's mouth when he saw the state Koro-sensei was in. "Now you'll have to grow back your legs too. That'll drop your stamina even further, making you easier to kill."

"What a relief." Itona said as he stood in front of Koro-sensei. "Turns out I'm stronger than you, Nii-san."

'He got Koro-sensei on the ropes.' Nagisa thought, staring at them. 'If they kill him... they'll save the world! And yet... ' The bluenette brought out the anti-sensei knife from his vest. Staring at the object with a frown. 'Why am I disappointed?' Nagisa questioned himself. 'They're zeroing in on weak point after weak point as though they know his every move. But honestly? We wanted to find those out ourselves. And we wanted to kill him!'

"Your legs have regenerated, I see." Shiro pointed. "Now, can you withstand the next onslaught?"

"This is the first time anyone's pressed me this hard. At first glance, it seemed like a straightforward face-off, but it's all been so carefully calculated." Koro-sensei said, as he and Itona began walking in circle, staring at each other. "There's a lot I'd like to ask you two, but I won't get a chance unless I win this first."

"You still think you can win?" Shiro spoke in a cocky tone. "The bluster of a cornered octopus, no more."

"There is one thing you forgot to take into account, Shiro-san." Koro-sensei pointed a tentacle to the said man.

'Hold that thought...' Hanako suddenly realized as she draw out her own knife from her school blazer with her free hand, the other still holding Nagisa's.

"There is not." Shiro opposed. "My methods are impeccable. Kill him."

Itona performed a somersault in the air and aimed his tentacles at his target and dealt tge final attack- that is when they notice the tentacles of Itona had been damaged.

"Oya? What's this?" Koro-sensei voiced, holding a tissue in one tentacle. "You seem to have stepped on something."

The students stared in shock when they saw move that their teacher had pulled. They saw the several anti-sensei knife laying on the floor, where Koro-sensei had previously stood. Nagisa stared at his hands where the knife he held before was now gone.

'When did he...'

"The knives did work on him." The young teen clicked her tongue not impress of the of the discovery. "Since you have told us countless of times that Koro-sensei and Horibe-san are brothers, Shiro-san, then in other words, if their tentacles are alike, then those anti-sensei knives should work as well on him. And that just proves it does." Hanako claimed, turning her gaze to the octopus. "Am I right, Koro-sensei?"

"Good job, Miyazaki-san!" Koro-sensei complimented his student. Using the shedded skin to trap the boy. "The loss of a tentacle unnerves us both. But I'm a little more seasoned the you." He then hauled the boy out to the closed window, the glass shattering into a million pieces as Itona was tossed outside the building. "You should be unharmed, wrapped in my old skin like that. But your feet are outside the ring. I win. As per the rules, that means you die." Koro-sensei grinned, his face turned into green stripes, which classified his confidence, before revwrting back to his original color. "You can't kill me anymore. I'd you want to live, stay with the other students of this class, and learn something that can't be measured just by crunching numbers: the difference experience makes. I've lived a little longer than you and come to know a little more. I became a teacher because I wanted to pass that on to you all." The Alien octopus smirked and repeatedly poked his head. "If you don't take my experience from here in this classroom, you'll never be able to beat me."

"I won't? I..." Itona growled, before opening his eyes wide, to reveal a blood red with a mixture of black. They were cold and dull of anger, glaring straight at Koro-sensei. "I'm weak?!"

'This isn't good. Itona absolutely despises studying.' Shiro thought, the man was just standing there in his place. 'And lecturing a child who hates to study...'

Koro-sensei and the rest watch as Itona rises from the ground and instead of showing white tentacles, it had turned black. And it was prepared for another attack.

'Could result in genocide!'

"Black tentacles?!" Nakamura exclaimed, as she and the rest were a shocking expression.

"Oh crap! He's gone off the deep end!" Maehara added.

"I'm strong. These tentacles made me stronger than all the rest." Itona furiously said, wearing a deranged look. Making Koro-sensei take a step back. "All the rest!" He then jumped back inside the classroomin rage, ready to kill Koro-sensei. But, fortunately, lifted his sleeve and shot Itona witha tranquilizer, knocking the boy out.

"My apologies, Koro-sensei. It seem this boy wasn't yet mentally prepared for school." Shiro said, walking towards the unconscious boy, laying on the balloon board. "I know it's his first day and all but he'll be taking a little break." Then pick up Itona.

"Wait!" Koro-sensei protested. "I can't just let that student go. I'm his teacher! I shall look after him until he graduates! And, Shiro-san... " He paused for a moment. "I have so very much to ask you."

"Sorry, but no. We're leaving." The man brushed off, starting to walk out. "Or would you stop is by force?"

Koro-sensei tried again to stop the man from leaving with Itona still with him, placing a tentacle on his shoulder and was instantly destroyed.

"Anti-sensei fibers. You literary cannot touch me." Shiro revealed with a warning tone, brushing off the goo that was left. "Don't worry. He'll be back before long. After all, March is just around the corner. I'll take on the task of tutoring him at home." Shiro said and left the class. Leaving the mountain. As Koro-sensei watched him from the broken window.

'His personality will keep him from escaping that school before the Earth's destruction. And the class...' He thought, looking back at the school building where Koro-sensei stood. Then left a short chuckle before walking off, as the rain had started again. 'How interesting. They're so unpredictable, I like today's sudden bursts of rain.'

•

•

•

It was after the fight between Koro-sensei and Itona that the students had arranged the desks back to its original place and was doing a bit cleaning before leaving. Meanwhile up front, Koro-sensei sat in front of the teacher's desk, whilst covering his face because of embarrassment, murmuring to himself.

"Oh, how mortifying! How mortifying!"

"What's with Koro-sensei?" Kataoka question, her classmate.

"Dunno. He's been like that for a while." Okano replied.

"I'm ashamed to have participated in such a serious development. I'm far more suited to comic relief!" Koro-sensei whimpers.

"So you know!"

"You sure got good and mad." Hazama quietly said. She then started to imitate Koro-sensei's behavior when they first learned about Itona's tentacles. "Where did you get those... those tentacles?!"

"Oh, please don't say that, Hazama-san!" Koro-sensei screamed in embarrassment. "Just hearing those words again makes me want to run for the hills! I'm the evasive airhead type! That's my selling point!" He covered his face again, shaking his lemon head. "Showing my serious side will just ruin my characterization!"

Koro-sensei Weak Point #19:

Embrassed when recovering after a serious scene

"It runs me off that you're deliberately managing your character." Sugino sweat drops.

"It's so embarrassing!"

"Still, that was quite a surprise." Bitch-sensei spoke, standing beside Sugino. "Who'd have thought that Itona big would have tentacles?"

"C'mon, Koro-sensei, tell us." Isogai pressed on their teacher. "How are you linked to those two?"

"You've always dodged questions about your true form..." Hayami stated.

"By seeing that really got us wondering." Sugino added.

"Yeah! We're your student, aren't we? Don't we have the right to know a bit more about our teacher?" Kataoka questioned. As the rest of the students eyes him, waiting him to answer.

"Then I supposed have to tell you the truth. The truth is..." He paused, giving suspense.

"I'm an artificial lifeform!"

The students, including Bitch-sensei, stared at him. Deadpanned.

"Well, duh."

"And?"

"No shit Sherlock."

"Nyuah! What kind of a reaction is that?!" Koro-sensei exclaimed at them. "Wasn't it shocking revelation?"

Everyone had a dumbfounded look.

"Well, like, no natural-born octopus can move at Mach 20." Okajima pointed out.

"And if you're not an alien, that's about the only explanation left." Hara added. "Plus, if Itona-kun said he was your younger brother, he must have meant he was created after you were."

'They're too sharp for me! What frightening children!' Koro-sensei thought, wearing a horrifying expression.

"We want to know what happened after that, Koro-sensei." Nagisa puts it briefly, as Hanako added a question.

"Koro-sensei, why did you get so angry when you saw Horibe-san's tentacles?"

"Why were you created," Nagisa said.

"And why did you decide to come here?" Hanako finished.

He was quiet for a moment, before he calmly declines. "Sorry, but I'm afraid there's no point in telling that now. If I destroy the earth, everthing you want to know will be as dust in the wind." His smile grew in a frightening way. It made the some the students scared. Then a small lecture started. "On the other hand, if you can save the Earth, you'll have plenty of opportunities learn the truth. If you want to know more, understand that there's only one thing you can do:" Koro-sensei grins at them." Kill me. Assassin and target. Those are the ties that bind us together. If you're looking for answers to the big questions from me, the only way you can get them is through assassinations. If there are no further questions, then we're done for the day." Koro-sensei finished, walking towards the door to leave. "See you tomorrow."

Until he became flustered again.

"Oh, how mortifying!"

We are killers.

We search for answers with knife and gun.

Our target is our teacher- his life, our question.

Outside the old building was Karasuma, who was busy talking to someone on the phone. "Yes, the students are unhurt. Make preparations for repairs."

"Karasuma-sensei!" Isogai called for the did man. Him and his classmates stood in front of him.

"What brings all of you here?" Karasuma asked, putting his phone away. "Quite the crowd, I see."

"Um.. Can you teach us more assassination skills?" Isogai asked for all of them.

The man questionly stared at his students. "More that you already know?"

"We always figured somebody would wind up killing Koro-sensei, so we didn't take it that seriously ourselves." Yada voiced out her concerns.

"Yeah, but when we saw Itona, we realized..." Maehara started. "We don't want it to be just anyone. We want to kill him ourselves."

"If they bring in another tough assassin, we'll lose track of what all our hard work has been for." Mimura continues on.

"So we want to kill our teacher the best we can in the time we have left." Kataoka added.

"We want to kill him and find the answers for ourselves." Isogai declared.

'What a change in attitude.' Karasuma smiled.

'Excellent.'

"All right." Karasuma agreed. "Interested students can stay after class for extra training. It won't be easy."

"Yes, sir!" The students shouted.

"Let's start with some climbing on our new rope!" Karasuma grinned to them, pointing a thumb at the tree behind him.

"That's rough!"

"Begin!"

Class 3-E at Kunugigaoka Junior High is the assassination classroom.

The rain has let up, and tomorrow the hell will signal the start of another day.

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Enjoy ♪ ♬ ヾ('︶'♡)ﾉ ♬ ♪