A group of high school students were spending their peaceful days freely until they have been chosen as the participants of the game where everyone is being hypnotized until they commit suicide. No one is safe from a sudden death, so what will they do to avoid their fates?

Kurokawa Yayoi, a middle school teacher, is exhausted from dealing with various problems that arise at school, such as bullying and monstrous parents. One day, on her way home, she picks up a black cat. However, it is actually a monster that has only taken on the appearance of a cat and has a special liking for "a certain thing"

In April 2022, the Civil Code was changed to lower the age of majority for men and women from 20 to 18. This is the lovable newlywed life of a couple of high school seniors who got married the "fastest" after the age change came into effect. (Source: Natalie.mu, translated)