很久以前，那还是人类憧憬宇宙、满溢着开拓精神的时代。世界各国在太阳系的各大行星上建设了起新的都市，人们在那里安定地生活。故事的舞台是这些行星的其中之一——火星上的新日本，描绘了“第4东京都”中的高中生、年轻工薪族们展开的青春涂鸦。

A mysterious creature destroys part of the moon and then warns that, if it is not destroyed before March of the following year, Earth will be next. It also demands to become the homeroom teacher of Class E, a third-year class at Kunugigaoka High School.

A mysterious creature destroys part of the moon and then warns that if it is not destroyed before March of the following year, Earth will be next. It also demands to become the homeroom teacher of Class E, a third-year class at Kunugigaoka High School. As the deadline for the assassination and the date of the end of the world approach, the students discover their true abilities and Koro-sensei's shocking identity.

A lot of stories unfold when Ms. Ma, a cold-hearted witch, becomes a homeroom teacher at an elementary school.

Eleven award winning directors explore why nearly one out of every two students in Latin America never graduates high school.

The killer class is back in session—sort of. Relive every moment through the eyes of the top two students: Nagisa and Karma!