Wife NTR: Cycle of Humiliation

A high school PE teacher catches the eye of a man with peculiar tastes. Once he finds a way to control her, how will she protect her family? Wife and teacher Shinohara Ikumi grows ever more accustomed to life as a sexual slave. She has been desperately protecting her younger sister, blackmailed into countless horrifying and obscene acts. Unfortunately, her sister Shizuka grows suspicious and investigates the situation—only to find herself landing right in the lap of the man exploiting her sister...