Plot & Details
The series is about a tentacle-like monster called Koro-sensei, which can move with Mach 20. After Koro-sensei destroyed about 70% of the moon, he wants to do the same with the earth. Before completing this plan, he would first teach the 3-E of the Kunugigaoka middle school as a class teacher. She is the worst class in the school, which the other students look down on. In addition, the class is used by the school management as a deterrent.
As a reward for killing the monster are ten billion yen suspended. From now on, the students try to kill Koro-sensei during and even off the course. For the killing over a shot separate ammunition was developed, which can only harm Koro-sensei, but not humans.
In the course of time, Koro-senseis teaches students to become more and more successful and can compete with the pupils of other classes. In addition, the pupils of the 3-E show the different strengths and weaknesses. The focus is on Nagisa Shiota, who records all the weaknesses Koro-senseis to find a possible weakness of his class teacher and target object.
Since the Japanese government does not want to entrust the killing of the monster alone to the 3-E, they are introducing more people into the class. Irina Jelavic becomes the new English teacher of the class who calls her "Bitch-sensei". With Tadaomi Karasuma, a member of the Ministry of Defense, the class immediately receives a new sports instructor who teaches the students many techniques of killing. He is also responsible for pushing more professors into the class.