SAN-200 Mari Ueto, a stepmother controlled by her psychopathic son-in-law

Mari's remarried husband had a stepchild. In order to make Mari his own, he pretends to be a passerby and attacks his father. During the month-long hospital stay, Mari and her son were alone. A stepmother who cannot refuse her son's forcible approach performs sexual services. The son, who cannot control his desires, demands a physical relationship and forcibly embraces her.