The episode started with Class E attending Phys Ed. Isogai and Maehara attacked each other with their anti-sensei knives like the rest. Standing at a side was Mr. Karasuma.

"Don't look away !" his voice stern. "Predict target's moves ! If you can all do that ," he went on, "you'll block off every last one of his escape routes !"

"Were going on our fourth month of training and more and more students are showing promise." Karmasuma narrated as he examined their action.

Isogai and Maehara : First Isogai went for the attack stabbing at Karasuma sensei who in turn , block attack and pushes him away.

"They've got great reflexes , and when they work as pair their knives hit more often now "Karasuma dodged the attack. Isogai distracted him while Karma sneak attack from nowhere blow at his neck.

Next up .... "Karma Akabane"

Karma was using dual knives.

He aimed them at Karasuma who blocked easily but he wasn't expecting Karma suddenly disappear in front of him , Karasuma blink and quickly glance around to find no trance of the boy. The second he turn around , he was stopped by an anti knife appear near his neck. Frightening, Karasuma quickly break away from the grip and turn back around to see Karma aimed a kick , targeting his face. Karasuma managed to cross his arm in front of his face to defend by the kick. Even thought he had blocked it but still sent him flying.

"He seem like the evasive type as first glance but there something inside his eyes that no one could put a finger on to it. " Karasuma stumble back and glance at Karma who had stopped moving , "His abilities are mysterious and far stronger that anyone here." Karasuma hesitate for second when suddenly Karma appear infront of him and went for a strike.

Karasuma manage to snap out of his thought and block it , grabbing his wrist and flipping him over to the ground. However he didn't hit the ground as he do a full spin in the air and send a leg , aiming a kick on to Karasuma's shoulder who didn't have the chance to block it.

Karasuma was stunned by the sudden move , he didn't have chance to realize that Karma was standing an inch in-front of him and flip him to the ground. Karasuma winded but soon hesitate when he was greet with the edge of the sharp metal close to his neck , a sweat rolled down his forehead as he narrowed his eyes to see Karma behind him , who's gripping his other arm behind his back.

That scene make every student and teachers even Karasuma himself completely paralyzed by Karma's action. Leaving them utterly speechless , Karma release Karasuma and went to take a break as everyone was standing there still in shock.

What the hell just happen ?

Karasuma rubbed his sore arm and feel uneasy , his eyes glued to the boy who had his back turn on them. Chill shiver down his spine but he manage to shook it off and trying to focus back on his students.

The background music fell to a sneering one. A drawing of their monster teacher appeared beside Karasuma. "And for the last but not least. Korosensei: the very mode, of an ideal , Korosensei. To kill a man of such character would be unthinkable ! " Karasuma's vein popped.

" I didn't ask you to chime in on my monologue." Karasuma said sternly. The drawing slid and Korosensei's sneering look peered over. "Get lost Target !"

"Although no other students have distinguished themselves , collectively , their talent has come quite a long way." Karasuma narrated dodging attacks swiftly.

Karasuma felt the bloodlust and before he knew it , he grabbed the boy behind him and spun him around to hit the ground. Karasuma blinked trying to grab on a loose string. Everyone stopped to look.

" O-ouch." It was non other than Nagisa Shiota.

"Sorry ! " He rushed towards the boy on the ground as the others gather around him. "I put a little too much force into my block here."

"O-oh is fine." Nagisa smile slightly , still on the ground.

"You gotta keep an eye on him , you dummy."  Sugino said and Nagisa looked across sheepish smile.

"Nagisa Shiota....  " Karasuma looked at him. "The strange presence I just felt.....was it just my imagination ? "

All of this thoughts make him feel uneasy as he took a glance at Karma who's continue shooting at the puppet. "Karma Akabane..his bloodlust is...different" he infamous demon formed behind Karasuma , he glanced at both of the students "Should I even encourage that kind of talent? " Karasuma stood there, unmoving.

The bell rang dismissing class.  A student told Karasuma if he want to join them for snack but Karasuma said he was too busy and he have a lot of work to do as he was ready walk back to the class.

"Man ! I can't hit him. Karasuma-sensei has like no opening at all." Kimura sighed.

"You sure ? Karma was the one who actually hit him with the knife." Isogai comment as they turn to looked at the boy who only rose an eyebrow in return.

"Yeah ! How did you do that Karma ?"

"We can't beat him at all !" While Karma just shrug his shoulder and walked away. Karasuma was taking a break , he walked up to the stair as figure appear in front of him. It was a man with short black hair and big belly.

"Yo ! Karasuma." The man greet with his hands full of bags.

"Takaoka ?" Karasuma seem surprised as the other students under the stair stare up at the large figure with wave of confusion wash towards them. "Huh ?"

"A new teacher ?"

The burly man had several paper bags with. "Hey ! I'm Takaoka Akira , and i'll Be assisting Karasuma as of today !" He announced cheerfully. "Nice to meet you , E-Class !" The man took out bunch of sugary food and sweets out of the box making everyone shock.

"Huh ?! What's all this ?!"

"C-cakie !" Another cheered.

"And eclairs from Le Hermes !" Everyone gather around him which waves of 'wow'

Isogai jittered about.  "Are you sure ? They look expensive !"

"Go on and eat up ! I emptied my wallet for this , so don't hold back !" Takaoka said proudly.

"You sure know your brand-name sweets." Hinata comment.

"Honestly, when it comes to me and sugar , it's love !" Takaoka went on dramatically and stuck his tongue out.

" He sure acts cute for such a big guy."

"So will you be taking over P.E . tomorrow ?" Nagisa asked.

"Yep ! Orders from headquarters. Gotta lessen Karasuma's load." He offered a cake for Korosensei who was partially drooling beside him. 

"You're like a neighborhood dad !"

"Dad , huh ? I like that !" He swung his arms around Nakumura and Mimura who smiled uncomfortably. "We're in the same class , so that makes us family , right ?"

Karma stare at them for a far with a hard glare like he was going to kill someone in anytime soon. 

Karma glance at the "new man" in a cold mixture of death in his eyes ,  he began to gritted his teeth.

"Hahaha. Hmm? Hey want some sweets ?" Takaoka ask as everyone turning all the attention to Karma.

Karma was standing there not moving , his hair shadow was covering his eyes so it made everyone hard to see his reaction. Takaoka hold his and out with some sweets in them , the students started to tense up when Karma didn't reply.

"What's w-" Korosensei was cut off by Karma who grabbed Takaoka arm in a painful grip , he held a hidden knife from Takaoka pocket. Holding the silver knife close to Takaoka by the neck slightly piercing the skin as blood dripped down his face cubby neck as he face was written in fear. They can feel a dark aura surrounding Karma as he glared viciously at the man in front of him.

Karma mercury eyes was terse like a rope ready to snap."I never was a family member in your little house of yours. " A deep and low voice vibrating the man's skin , he took a deep breath. "If I catch you do anything , I'll cut open your stomach and rip the spine out of your back. "his gaze narrowed , dangerously."Then stuff it back down into your throat until you choke on it... "

Takaoka was horrified after what he had just experienced , the Class can see how the man's leg visibly shaken. Karma release him making the man stumble backward. Takaoka absently rub his sore arm as he watched the boy began to walk away.

"W-What happened ?" Meahara stutter out.

They never seen Karma so Furious and actually trying to kill or threaten a teacher before. If Karma didn't like him them why didn't he just say so ? They continue to watch Karma who had his back turn on them and disappear out of sight. 

This is what a real assassin looks like.

His classmate was so speechless , standing around and frozen like stone. Even Karasuma's eyes had gone slightly wide in disbelief , his jaw slack.

Karma is a real thing. You all will never compare to.

Takaoka back was greeted with the screen who's watching the students train , it shifted up to his face but the cheerful smile was replace by a strange , cold expression. He gripped tightly to the bag that's full of sweets.

The classroom was pitch black  , coldness vibrating the boy's skin but it never seem to bother him. The camera shifted to show Veins were popping on his back and dark ... dangerous... deadly aura surrounded the room.

The screen shifted to the students were sitting in the ground as Takaoka explain their schedule.

" Now. With your new training regimen come a new schedule !" He hand out a paper , every week from period 5 to 10. Meaning Ten periods and training until 9 pm.

"N-no way !"

"Ten period ?!"

"Training until nine at night ?!"

"But of course ! " Takaoka smile and explained. "Following this curriculum will boost your abilities by leaps and bounds ! Now let's get to work—"

" Hey ! Wait a minute ! This is impossible ! "he was cut off by Maehara suddenly went up to Takaoka."With so little for learning our grades'll plummet ! And what about free time ? We can't do thi- " he was cut off by Takaoka put a hand on his head...and kneed him in the chest , Maehara spit out some saliva.

"We can't nothing. You will." Takaoka said with a smile on his face. Takaoka drop the student on the ground growling in pain , some others went up to help the boy. "You need only two things to win over your students : affection and fear."  Takaoka grinned at his own thoughts."Well ? You're coming along with your owl dad , right ?" 

"Well... I , umm... I don't want to. i'd rather have Karasuma-sensei's class." Kanzaki gently rejected and smile calmly. The man lick his lips again before he slap her in the face , sending her flying across the ground as everyone gasp again.

"Kanzaki-san !!" Both Nagisa and Sugino rush towards the girl who's lying on the ground.

"Seems you still don't understand." The Man smile as both of them glare dangerously at him. "The only answer in her is 'yes'  if that's a problem , we can talk out with our fits ! That's one of your old dad's specialties ! " Before the man could send another kick aiming Meahara stomach , Takaoka mocked him, when he suddenly felt a dark aura surround him from behind terrifying the large man.

"K-Karma ?"

"Seems you didn't listen....Takaoka sensei " The student were all surprised to see Karma standing there , fist down showing he was the one who sent Takaoka flying. His eyes was filled with deadly bloodlust as he grabbed by his hand and twisted Takaoka wrist making the man wince in pain. His leg give up on him as he end up kneeling down to the ground , struggling.

"Here's the deal..." Karma said still grabbing his wrist as he looked down to met Takaoka sensei eyes. Turning around he continued "If Nagisa beats you , you leave and if he doesn't..." The pair of demonic eye smile deadly at Takaoka , making the man froze.

"l'll kill you...." He whisper shocking everyone at his suicide bet.

Takaoka was too frighten to even stutter out any words but a pathetic whimper , Karma let go off him as he drop to the ground , shaking with fear. He then turn to Nagisa. "Nagisa , Karasuma and I put the trust in you. Can you fight him ?"

"No, I can't fight," Nagisa protest. "Probably too big of a chicken to even try." He'd frown and tried to reason. 

Karma turn to him and place both hands on his shoulder to make Nagisa look at him. "But you will do it Unless it was absolutely a matter of life and death , right ?"

"Huh ?" Nagisa was caught off by the question. "Life and death...?"he trailed.

He noticed Karma's attention was else where , he looked at where he was staring and noticed the Class face filled with despair. He looked down at the blade and clutched tightly. He looked up and nodded. Karma face shown appreciation then he turn and took Kanzaki and Maehara to the infirmary , Karasuma were also there to stop them and help out.

The camera shifted inside the cabin.

Karma was finish bandaging up Maehara and Kanzaki who was resting on the separate bed. He sat at the large window beside them , there he saw the whole scene take place.

"K-Karma-kun" Karma turn around to see Maehara and Kanzaki smiling weakly at him.

"T-thanks for the help" Kanzaki shyly smiled.

Maehara chuckled and rubbed his sore arm. "Yeah , Thanks dude"

Karma soften his expressions , he approach them and gently ruffle their hair making both of them stunned in surprise before they felt their cheek turn red.

"You guys really need to get a rest now" Karma said in a gentle and clam voice making them feel safe , after a few minutes pass Karma turn to look at the both sleeping figures on the bed who's snoring quietly.

A gentle feature crawl on to Karma's face. "You're welcome"

The scene cut to Nagisa who looked down at the knife.

Flash memory of Karma stare at him with his mercury eyes makes him wonder. "I like his eyes.  Not even family members would look me in the eye like this. There must be a lot they're keeping from us. I don't even know why he chose me , but....." Nagisa took the knife in his hand with an unreadable expression. " If he's the one who told me to ... then I know I can trust him. And I can't let what happened to Kanazaki-san and Meahara-kun slide."

"I'll do it."

"Karasuma...your eyes must be going bad." Takaoka mocked.  "Same with the certain Red Head friends of yours.." Taokaka took off his jacket. "Bring it on !"

Nagisa got on his feet , ready to attack as the disturbing smile continue to plaster on the Man face. Heart beating fast , the boy narrated his thoughts."I wasn't too sure how to move with a real knife in my hand. Then I remember both Karma trust and Karasuma advice. That's right." Nagisa's eyes winded a fraction and posture relaxed. His heartbeat was back to normal.

"I don't have to fight him. " Appearing in Kanji overhead his figure was written a sentence .

 "I just need to kill him."

 In what felt a trance , the boy smiled and began strolling forward. "So , with a smile on my face , I walked right to him. Completely normal , as if I was walking to school." The boy neared slowly while Takaoka tracked him with his eyes, failing to react at the peculiar motion. Nagisa stopped when his chest hit Takaoka's unmoving arm. "That's when Takaoka-sensei first realized..." Nagisa suddenly swung the knife aim at his face as the Man barely dodged. ".......that he was about to be killed...." 

Startled , he lost his balance. "Because everyone startled when they're about to get killed. Even Korosensei. With his center of balance shifted back , " A serpent swiftly circled his prey. Groping his neck. This was Nagisa's bloodlust. Takoka writhed as Nagisa placed the knife on the skin oh his neck. Smiling , content with his play. 

"Gotcha." 

Nagisa was now behind him as he held the knife into the Man's neck. While the other hand blinded the trembling man's eyes. 

"Holy hell... " The students stared even the teachers."..he's exceeded my every expectation ! "Karasuma screamed in his head , he pause for a moment "..if Nagisa is already this good..then.." he nervously glance at Karma at the window who's observing the whole thing.

Balancing suddenly, "Oops ! Was I not supposed to use the back of my knife ?" Nagisa asked aloud.

"That's enough !" Korosensei took the knife away from Nagisa. "We have a winner , Karasuma sensei honesty..." he continued , chewing the metal. The students gather around Nagisa.

"You did it Nagisa!"

"Thank goodness!" 

 "That's a big deal!" 

 "You sure know your way around a knife."

"Nah, I just did what Karma-kun told me. Takaoka-sensei is tough." Nagisa replied smiling.

"That was a hell of a fight !" The students continued to praise him.

"Karma-kun... " Nagisa lingered in thoughts didn't pay much attention to the students' celebration. 

Some of them noticed his expression. "What's wrong Nagisa ?"

"Eh ? O-oh it's nothing just thinking hehe." He chuckle nervously and look through the class window. "Why did Karma-kun choose me...."

Before he could say anything, a figure, as they watched, towered over their students. "You brats." Takaoka had gathered himself together again. "Turning on your father figure and rejoining in some fluke victory?!" He raged. "Again! I'll have you in two! Body and soul!"

The white in his eyes was turning red. Before Karasuma could move forward, a tentacle stopped him. 

"If we fought again I'd lose for sure," Nagisa said. "But what's plain to see is that Koro-sensei is our teacher and Karasuma-sensei is our training instructor and that's final. You and your forced father figure role doesn't come across half as warm as Karasuma-sensei's professionalism." Karasuma's eyes widened.

"We're grateful you really tried to make us stronger."Nagisa went on. "But I'm sorry." He bowed. "Please leave." The other students glared at the man.

Feeling lost, Irina asked Takebayashi, "Wait—what am I?"

Setting his spectacles the boy said, "You're our bitch."

Irina immediately snapped with a "You're dead!"

"I'm not gonna stand here listening to this brat sproutin' off!" Takaoka barked. He was about to attack Nagisa but a hand stopped it before he could succeed. They around to meet Karma's eyes.

The man immediately noticed to the cold expression that wore on the boy's face , the atmosphere around him began turning dark purple. "W-what....the hell..." he man shrink in fear

The mercury eyes bore into Takaoka's. "Takaoka-sensei, your lesson was a joke." He said in his velvety voice. Coach Terai shivered. "Yes, fear is a must in education." Spawn of dark skeletons crawled at the lesser opacity of his face as he spoke.

"But a teacher who can only instil fear only through violence is a teacher of the lowest order indeed." One of the bigger crawlers lookin creature struck Takaoka's mouth, then it was accompanied by many. Takaoka freaked out. He cried and screamed, sweating fearfully. 

"There you are." Said a new voice.

"Principal Asano !"

Takaoka cried out in relived when Karma let go off him and began crawling away from the deadly boy. "You're walking papers."The principal said , Takaoka was confused and he didn't have time to react when the Principal curled up the paper having smashed into his mouth.

Walking away as he cleaned his hands away with a napkin. "The ministry of defence has no hiring rights here. I call the shots around here and don't you forget that." He disposed of the tissue paper which fell on the fired instructor's bag. 

It took a few second to process the words. He grew red with rage and shame, Takaoka cussed over and over as he chewed the parchment. His face looked horrible. "Damn it all to hell!" He screamed as he got up and ran, grabbing his bag swiftly.

There's a uncomfortable silence , Karma noticed the fear in the class eyes. He sighed which cause the majority of people jump.

Karma close his eyes , arm crossing. "Don't worry , he's fired."

"Takaoka's... fired?" Kimura mumbled not able to believe it.

"So, its back to Karasuma-sensei?" Okajima questioned. The silence lasted for only a second before all the students jumped and cheered in glee.

The screen turn black and Reveal an Angry a Korosensei on the sight.

"Karma-kun !" Korosensei was red , he shook with anger. "What you did today , was not only endangered Nagisa but yourself as well ! What were you thinking ?!" 

Karma remained calm as usual , he lowered his gaze.

"Nei Karasuma sensei" Karma spoke up as the Raven assassin turn to the boy who was facing outside the window , completely ignored the Furious Octopus infront of him."Did you know why Nagisa's present scared you ?" Karasuma looked a bit taken back."Excluding me , his bloodlust is by far the strongest in the whole class. That's why he was capable of beating Takaoka."

"Even I'd you had known that , you still endangered yourself Karma-kun !" Korosensei reprimanded.

"No sensei....." The boy looked down and shook his head. "....I did endangered all of you." Karma mutter out loud , surprising everyone with his statement.

Isogai looked over , curiously. "What ?"

Karma shrugged his shoulder , he bit his lips. "Because i'm no different from you." Karma glanced up and the whole trailed his gaze at Korosensei.

"What does that mean," Korosensei draw his eyes at they boy. "Karma-kun."

Karma kept a blank look. "Sorry , but I think i'm going to end it here."

Some of them tried to understand but the others didn't looked convinced , Karma didn't blamed them. The truth will come soon eventually.