Title: Assassination Classroom
Author: Yūsei Matsui
Genres: Action, Comedy, Sci-Fi
Verdict: High school and up.
Earth is threatened by the sudden appearance of an enormously powerful monster who apparently destroyed 70% of the Moon, leaving it permanently shaped like a crescent. The monster claims that within a year he will destroy the planet next, but he offers mankind a chance to avert this fate. In class 3-E, the End Class of Kunugigaoka Junior High School, he starts working as a homeroom teacher where he teaches his students regular subjects, as well as the ways of assassination. The Japanese government promises a reward of ¥10 billion (i.e. 100 million USD) to whoever among the students succeeds in killing the creature, whom they have named “Koro-sensei” (殺せんせー Korosensē, a pun on korosenai (殺せない, unkillable) and sensei (先生, teacher)). However, this proves to be a highly unachievable task, as not only does he have several superpowers at his disposal, including; accelerated regeneration, visual cloning, an invincible form, and the ability to move and fly at Mach 20, but he is also the best teacher they could ask for, helping them to improve their grades, individual skills, and prospects for the future.From Wikipedia: https://en.wikipedia.org/wiki/Assassination_Classroom
Inappropriate Language: “Damn you, Tentacles!!” “…it must be hellish…”
Violence and Gore: Throughout the series, students repeatedly try to assassinate their alien teacher with a variety of realistic looking weapons (that are harmless to everyone but the teacher.) There is occasionally mild blood spray when the teacher is harmed.
The volume ends on the aftermath of a situation where a woman has shot a man in the forehead.
Sex and Nudity: The volume ends with a woman straddled over the waist of a presumably naked man while wearing a negligee–no anatomical details are visible.
Drugs and Alcohol: None present.
Positive Messages: While the series does revolve around the concept of students killing their alien teacher, one of the primary messages of the story is that every person has value and is capable of meaningful growth. Students in the story are part of the “bad” class for a variety of reasons, and their teacher aims to help them identify their strengths and find what makes them special. There are also a theme that a broad education is important no matter your specific interests.