I'm gang-raped by my son's classmate every day.

Kyoko was able to marry a divorced man named Takumi, who had a divorced child. He was worried whether he could get along well with Takumi's son, Shinji, but he was saved by Shinji, a kind-hearted person, and was living a happy life. However, Kyoko didn't know. The fact that Shinji is a "bullying child" at school... One day, Shinji brings his classmate home. As soon as I saw my stepmother Kyoko, who had lived without a mother for so long, my classmates' eyes changed...