JYMA-087 Married tutor Yoshii Miki is blackmailed and becomes a sex toy for a student and his father

Yoshii Miki is a married private tutor who used to teach at a prep school. She quit after marrying but returns to work to make ends meet. Her husband works hard, but their sex life is lackluster and she is frustrated. One day a student shows her a video of him having an affair. From then on she is sexually harassed and treated as a submissive masochistic pet by the student, his friend, and his father, becoming a sex toy.