The real villain in Assassination Classroom is Kotaro Yanagisawa (aka Shiro), a vengeful scientist responsible for creating Koro-Sensei and seeking revenge against him, while the second Reaper (God of Death) also serves as a major antagonist driven by a twisted desire for recognition and to reclaim his status as the world's best assassin, making Shiro the catalyst and ultimate antagonist behind Koro-Sensei's existence and the series' final conflict.
In response, Korosensei softly places a tentacle on his cheek and tells that he wants Nagisa to kill him with a smile on his face. After giving each other their final farewells, Korosensei is stabbed in the heart and his body dissipated into numerous light particles.
Koro-sensei (殺せんせー, Koro-sensē) is the main protagonist and anti-villain of the series. He is a yellow octopus-like creature who is the teacher of Class 3-E of Kunugigaoka Junior High School.
Shinigami the God of Death or simply known as The Reaper and later known as Korosensei, is the overarching protagonist of the Assassination Classroom anime and manga series.
Before dying, Korosensei conducts a final roll call with Karma first to respond. After Nagisa finally kills him and Korosensei disappears in particles of light, everyone starts crying including Karma.
Eventually, once Nagisa graduates from high school and gaining the approval of both her parents, Nagisa and Tomoya get married and begin living together. Nagisa eventually becomes pregnant, but died from giving birth to their daughter, Ushio.
In "Assassination Classroom," Koro Sensei serves as both mentor and target for his students in Class 3-E. His journey begins with tragedy—once known as an ordinary man named Kunugigaoka Gakuen's top assassin, he undergoes a transformation that turns him into the tentacled creature we know today.
Nagisa Shiota is a femboy with his blue hair and he has grey trousers and blue t-shirt.
This being was soon dubbed “Korosensei”, literally meaning Unkillable Teacher, and strangely became an incredibly beloved teacher to his students.
Despite his calm and empathetic demeanor, Nagisa possessed deep insecurity about his talents and how he was perceived by the people around him. This was reflected by a lack of goals and general pessimism about his own future, which caused him to end up in Class 3-E.
Top 5 strongest assassin of all time 1. Takamura 2. Prime Taro 3. Torres 4.
Koro-sensei and Aguri became close friends as they talked every night for an entire year and he gave her advices for her job as a teacher and eventually they fell in love.
Koro Sensei Quest (殺せんせーQ!; also written as Koro Teacher Quest) is a manga written by Kizuku Watanabe and illustrated by Jo Aoto. The manga is a spin-off of Yūsei Matsui's Assassination Classroom that features the original cast of the original manga.
While Koro-sensei undoubtedly reigns as the strongest, let's take a look at some other formidable characters who deserve a place on this list.
Antimatter Physiology: Due to the human experiments of producing antimatter in a living body by Shiro, Korosensei's entire appearance is an octopus-like creature with multiple tendrils that are his tentacles.
Class 3-E (3年E組, San-nen E-gumi), or simply Class E, is the lowest ranked class of Kunugigaoka Junior High School where it is nicknamed the "E-as-in-End Class" and consists of students who either failed to keep their grades up (i.e. Yukiko Kanzaki, Nagisa Shiota) or were punished for breaking school regulations (i.e. ...
Nagisa graduates shortly after; in the company of her friends, she receives her diploma and marries Tomoya, taking a job as a waitress at a local family restaurant. Tomoya and Akio visit Nagisa while she is working, and fend off some customers accosting her.
Superhuman Strength: Unlike Korosensei, the Reaper's tentacles possess enough strength to destroy a 30-story building in seconds.
Korosensei used to be 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.
Toka Yada is a bisexual character from Assassination Classroom.
However, Nagisa's greatest strength is also his greatest weakness. His tendency to overthink and analyze can sometimes lead to hesitation and self-doubt. He often questions his abilities and struggles with feelings of inadequacy, especially when compared to his more confident classmates.
Sage: Both have similar faster than light reaction and combat speed feats, and while Korosensei could definitely travel faster, speed might not matter when it comes to their powers.
He doesn't become remotely threatening until he gets turned into a tentacle mutant for the final battle. I also feel that the reveal of him being an impostor while Koro-sensei was the REAL God of Death comes off as a bit of an asspull.
The morning after Korosensei's assassination, Karasuma assures Class 3-E that he will do everything he can to lessen the burden of the students, from gag orders to close scrutiny supervision. Kataoka requests that the class participate in the afternoon's school graduation ceremony, which Karasuma obliges.