The story revolves around an octopus-like creature named Koru who is an alien that has come to Earth to destroy it. The government assigns Koru to a school as a teacher for a class of misfits, with the condition that they must assassinate him before the end of the school year. The students, along with their classmates and teachers, try various methods to kill Koru but fail due to his incredible speed and regenerative abilities.
Throughout the story, Koru forms a bond with his students and helps them improve their academic performance. Meanwhile, the government and other characters try to intervene and kill Koru. However, the students consistently thwart their plans and protect their teacher.
Ultimately, the government decides to disband the class, but the students continue to attend school, and Koru continues to teach. The story concludes with Koru revealing that he is fulfilling the last wish of a friend, Agure, who was an employee of the laboratory where Koru was kept.
Here are the key facts extracted from the text:
1. The story is about a film called Assassination Classroom.
2. An unknown creature made a permanent symbol of Hinduism out of the Moon.
3. The creature flew to Earth to cause trouble.
4. The military tried to destroy it but failed.
5. A yellow octopus arrived in Japan to become a school teacher.
6. The octopus was assigned to teach a class of students who were considered hopeless.
7. The octopus set conditions for the students: if they couldn't kill him before March, he would destroy the Earth.
8. The Ministry of Defense sent a man named Karasuma to the school.
9. The students were given special pistols and knives to try and kill the octopus.
10. The octopus couldn't harm the students and vice versa.
11. The students were asked to keep the situation a secret.
12. A reward of 10 billion Yen was offered to anyone who could kill the octopus.
13. A professional killer named Irina Elovik became an English teacher at the school.
14. A student named Karma Akabane was transferred to the class and became a rival to the octopus.
15. Karma had tentacles and was able to slightly harm the octopus.
16. The octopus shed his skin to protect himself and threw Karma out of the class.
17. A student named Itona was transferred to the class and also had tentacles.
18. Itona and the octopus fought, but the octopus shed his skin again and threw Itona out of the class.
19. The Ministry of Defense sent a whole cabinet with built-in weapons to the school.
20. The students rebelled against the cabinet and tied it up.
21. The octopus told the cabinet to make friends with the students and it was added to their phones as an application.
22. The student who suggested the name "Ritsu" for the cabinet became friends with it.
23. The Ministry of Defense admitted their failure and added another student to the class.
24. A student named Takaoka became the PE teacher and had a history with Karasuma.
25. Takaoka hit a girl in the class and Karasuma stood up for her.
26. Karasuma fought Takaoka and won, making him leave in disgrace.
27. When it rained, the octopus felt unwell and a student slipped him poison.
28. The poison didn't harm the octopus, but he taught the girl how to make a strong poison.
29. The octopus flew off into space and dropped a military satellite on the ground.
30. The students were disillusioned, but the octopus motivated them to study more.
31. The octopus offered to cut off his tentacles if the students passed their exams well.
32. Six students with excellent grades appeared in the class, and the octopus had to cut off six of his tentacles.
33. The students prepared to execute the octopus during the summer holidays.
34. They chose a day when it would rain, knowing the octopus would be weakened.
35. A student named Oko infected the students with a virus and demanded the octopus in exchange for the antidote.
36. The students learned chemistry and made their own antidote, curing themselves.
37. They grabbed Oko and his partners and shoved them into cement mortar.
38. The military decided to destroy the octopus and placed it under a special dome with bullets.
39. The students watched as the octopus was freed from the sphere, but the bullets didn't harm him.
40. The authorities wanted to disband the class, but the students continued to attend school and the octopus continued to teach.