I'm a bullied child who gets my mother a bullying classmate

Momoko lives with her son Kazuya on a long business trip. One day, Kazuya brings his classmate Yuta to the house. Kazuya, a bully who has an eye on Momoko's ripe body, is left alone in order to attract her... Momoko feels guilty about having a relationship with her son's classmate, but is unable to control the pain deep in her vagina. Her mother, who was constantly being played with without mercy, felt a madness in her sexual desires, but eventually she couldn't stay without his cock...