JYMA-093 Caught in the act of an affair, Reiko Kobayakawa, a beautiful mature busty married tutor, falls into the role of a plaything for a worthless father and son.

Reiko, a married private tutor who used to work as a cram school instructor before her marriage, starts tutoring again to help with the household finances. Her husband is a serious and diligent man, but their married life is emotionally distant, leaving her dissatisfied. Then one day, a student shows her a smartphone with evidence of an affair, and Reiko is shaken. From that point on, she is pushed into a relentless cycle of harassment and coercion, and is treated not only by her student son, but also by his friends and father, as an obedient pet who is gradually reduced to a mere object of exploitation.