It was revealed that he was raised in an environment "where everybody could easily betray one another to the point that one could only trust oneself". Through these hardships, he decided to become an assassin in order to survive.
History. As a child, he was born into one of the vilest and corrupt slums in an unknown country. He never knew his real name or his birthday. It was an environment where everybody could easily betray one another to the point that one could only trust oneself.
Being a former assassin who possessed Reaper attributes, he wanted to test his limits by turning against humanity and doing what pleases him.
All Students Are Equal
To Koro-Sensei, it doesn't matter whether a particular student is a high-achiever or extremely skilled, as his only goal is to ensure all of his students succeed in whatever they do.
Korosensei punishes her by grooming her (Irina's sexual groaning loud enough for the entire class to hear outside), dressing her into a gym outfit, and "doing that thing with his tentacles".
This lovable yellow form was because of his emotional change. He desired to be lovable, and he was happy (as demonstrated by the smile and the yellow coloration).
The God of Death, also known as The Reaper, is a major and the final antagonist in the Assassination Classroom series. He was a protégé of Korosensei. The title “God of Death” initially belonged to Koro-Sensei, however upon betraying him he stole his identity and name.
Koro-sensei (殺せんせー, Koro-sensē) is the main protagonist and anti-hero of the series.
9 Mucus. One of Koro-sensei's major weaknesses happens to be water, but his body accounts for this by producing mucus that can lessen, or even negate, the swelling to his tentacles after they've made contact with even minuscule amounts of water.
The Reaper uses his inhuman skills to shoot Korosensei's tentacles at a speed of Mach 2, preventing him from escaping and subsequently trapping him with his students.
The ending itself presents the death of Koro-Sensei by the hand of his students, after they lost all their will to assassinate him. They put his life to an end the way he wanted, but they lost the best teacher they ever had.
The octopus-like creature was a threat to the Earth as he declared that he would destroy the Earth after a year if they didn't manage to kill him within the given time. The government had set a 10 billion yen bounty on the teacher of Class 3-E. It was almost impossible for anyone to kill this thing.
Koro Sensei
Initially, Karma hated Korosensei like he did with all teachers due to the incident where the teacher reprimanded Karma for defending another student simply because they were an E student.
However, Koro-sensei was still bored with his new position, with no one worthy enough to challenge him. That led him to become a teacher in order to train students to be warriors strong enough to defeat him. The students of Class 3-E storm through the castle to get to the Demon King.
Confession Time is the thirty-seventh episode of the Assassination Classroom anime and the fifteenth episode of Season 2.
Aguri Yukimura is the deceased love interest of Koro-sensei in the anime and manga series Assassination Classroom. Aguri was the teacher of Class 3-E and the older sister of Akari Yukimura, better known as Kaede Kayano.
Korosensei's original appearance is of a human with small black eyes, short dark hair and pale skin. While working as an assassin, he would wear dark colored clothes, usually black or brown. After being used in experiments, Korosensei acquired the appearance of a yellow bipedal octopus.
In the end, Goku seems most likely to win, if only because of Koro-sensei's eagerness to coach his opponents. Goku's experience with alien invaders and mutated creatures with absurd regeneration would provide him with an edge to begin with, while Koro-sensei mostly has experience with ordinary humans.
Much like the students, viewers quickly saw Koro-Sensei not as a target to be eliminated, but an upstanding academic whose life needed to be preserved, and yet despite their efforts to keep their sensei alive, the kids of Class 3-E were ultimately forced to take his life.
Koro-sensei's last words to him are those of pride and regret that he hadn't been more attentive, and promising that if they meet again, he'll treat him better.
Kotarō Yanagisawa, better known as Shiro, is the main antagonist of the manga and anime series Assassination Classroom. He is a cruel and vengeful scientist who bears a deep grudge against Koro-Sensei because he was the one who stole everything from him.
Karmagisa is the slash ship between Karma Akabane and Nagisa Shiota from the Assassination Classroom fandom.
The Reaper, also known as the God of Death, is the original human identity of Korosensei, the supporting protagonist of the Assassination Classroom series. He was the world's greatest assassin until his student betrayed him and stole his identity. He was voiced by Jun Fukuyama in Japanese and Sonny Strait in English.
Ryuk - Death Note
Death Note's Ryuk is a shinigami, or a god of death. He has the power to take the life of just about anyone he deems fit, simply by writing an individual's name in his Death Note, a supernatural notebook.
Koro is a culture bound delusional disorder in which individuals have an overpowering belief that their sex organs are retracting and will disappear, despite the lack of any true longstanding changes to the genitals.