Mother's friend Aki Sasaki

Aki Sasaki, a mother's friend, finds herself in a complicated situation. She gets intimate with the son, a student, while his father, Mr. Yoshino, is around. The son takes the initiative, and they engage in various sexual acts, including oral sex and intercourse. As their relationship progresses, it becomes clear that Aki is not just a family friend, but someone who is actively pursuing a romantic and physical connection with the younger man.