Rie Kawashita

Kyôko, a traumatized young Japanese girl, finds herself struggling with her self-confidence in her adult life. Growing up in a family without her mother and her sister, she constantly questions the rationale of sex and the notion of liberty in modern Japanese society.

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.