" It's what your students did on that southern island. " Shiro continued as Koro-sensei looked at his bursted tentacle from touching the sheet, " Youngsters have such limber minds. First confuse, then strike. "
" That voice... " Koro-sensei's eyes widened.
" Now then, Koro-sensei. Let your final death match begin. " Shiro snapped his fingers.
" Koro-sensei... " Itona called out from above the pen with his tentacles flailing everywhere, " Compared to me, you are...weak. "
Present
" Easy to confine first, then strike. I've taken a page from your tactics, you see. " Shiro addressed the group of students.
" You! So you were the one behind all of this! " Terasaka shouted indignantly.
" Exactly. Once that creature started to lose the trust of his students, his movements become slightly more panicked. Even if things seem off somehow, he'll dive right in, what a fool. " Shiro scoffed.
" Dammit! That's our kill! " Terasaka grumbled.
" Why must you always play so dirty? " Fuwa clicked her tongue.
" It's called being an adult. " Shiro answered with his eyes gleaming, " What Itona has on his tentacles there are gloves with sharp edges made of anti-sensei materials. Every time their tentacles touch, the creature's bare tentacles will burst. However, it seems that it isn't enough. "
" Some adult you are...you wouldn't be a great parent with the way you're handling Itona right now. " Asuna mumbled under her breath.
The group continued to watch the pen bulging in several parts as Koro-sensei tried to dodge Itona's tentacles with some of his tentacles bursting from contact with the anti-sensei material.
" I win, nii-san. " Itona declared as he grabbed Koro-sensei with his tentacles before flinging him away, " By killing you, I'll be solving one problem : I'm proving...my strength! "
Itona's tentacles dove right in for the kill only for Koro-sensei to regain his bearings and dodge them. However, now, he seems much more relaxed instead of panicked.
" Very well done, Itona-kun! " Koro-sensei praised, " If this was during the first term, you may have been able to kill me. But your attack pattern is pretty simple. No matter how strong you are, no matter how fast you are, no matter how many schemes Shiro plans, no matter how much I freak out, I can see and adapt to your patterns by our third fight. "
" No way...you're lying... " Itona gritted his teeth as three tentacles shot out to stab Koro-sensei only for him to catch them himself, halting his movements.
" I studied too, you know. How can I teach anyone if I don't grow and learn myself everyday? " Koro-sensei stated, " Now let's get rid of this dangerous cloth pen. "
" Experiencing my Absolute Defence Form during summer vacation has taught me a new skill... " Koro-sensei gathered all of his tentacles together, " ...compressing not my whole body but a portion of my tentacles to release a burst of energy. "
White light emitted from Koro-sensei's actions as everyone stared in shock at the light engulfing the pen.
" What?! " Shiro gasped.
" Remember this, Itona-kun. Assassination is education. The assassination classroom's teacher will get stronger every time he teaches! " Koro-sensei lectured as a beam of energy was released.
*
" Why can't I win... " Itona wondered, frustrated as he slowly fell from where he stood atop the pen before losing consciousness, " I'm supposed to be stronger now too... "
He was caught gently by Koro-sensei who took a glance at his face before facing Shiro, " There you have it, Shiro-san. Leave him to us and go quietly. Oh and... "
" ...go spread the accurate information that I'm not an underwear thief! " Koro-sensei's aura immediately changed to his usual silly one as he floundered about.
" And that I'm actually a B-cup! B-cup! " Kayano added.
The other students sweat dropped at Kayano's comment.
Koro-sensei and Shiro had a stare-off contest before they were interrupted.
Itona gasped before he began writhing in pain. He fell to the ground as Koro-sensei had let him go, unsure of what to do.
" I-It hurts...my head's...it's killing me! My brain is about to burst! " Itona gasped out as he grabbed his head in pain.
" With the shock of his consecutive defeats getting to him, his tentacles are starting to gnaw away at his brain. " Shiro remarked as he watched Itona suffer.
" H-Hang in there, Itona-kun! " Koro-sensei fretted.
" If it's something so dangerous, why would you implant such a thing to someone so young?! " Asuna snapped, irritated with Shiro.
" I was the one who picked him up from the dirty streets. He was just showing his gratitude to me by letting me implant those tentacles in him. " Shiro rebutted, " I didn't expect him to be such a disappointment though. This must be his limit. He can't even pull off this small scheme of mine. "
" I was right. Someone like you definitely can't nurture youngsters well enough without having them jump off the deep end. " Asuna growled.
" If I were you, I'd hold my tongue in the presence of me. " Shiro's eyes narrowed at Asuna who stared back at him defiantly, " I'd be careful from now on. Itona, if this is your limit, the Organisation will stop paying. It's not that I don't sympathise with you but we have to cut our losses at some point to get our next model up and running. This is farewell, Itona. You're on your own now. "
" Wait! What kind of guardian are you?! " Koro-sensei yelled after Shiro.
" Quit playing school, you monster. All you can do is destroy things---destroying everything. I will not tolerate your existence. I only wish for your death... " Shiro glared at Koro-sensei, " ...no matter what sacrifices that has to be made. "
Shiro turned back around, leaving, " Should your dear students just stand there? They can be in danger. "
" UARGHHH! " Itona screamed as his tentacles shot out towards the group, protected by the eleventh hour when Koro-sensei sped in front of them and deflected the tentacles.
Itona growled, veins in his tentacles popping and drool running down both sides of his mouth. He panted before taking off into the night.
" Itona-kun... " Nagisa murmured as everyone stared after the retreating boy.
THUMP
" Koro-sensei! " they shouted out worriedly.
" As you can see, I'm quite exhausted. I think this calls for a little break. " Koro-sensei chuckled tiredly.
*
" With tentacle cells grafted to your human body, you must undergo treatment that allows you to adapt to them almost on a daily basis or else you'l be tormented by rejection symptoms. "Itona stood in front of an electronic shop, glaring at it.
" Now that I've stopped your treatments, your tentacles will now slowly eat away at your mind. The average person dies of insanity in three days. "