GVG-713 A busty widow who turns into a sex slave in a circle of old workers Mio Kimishima

Only the widow who took over the management of the factory from her late husband. With a ruthless personality, he drove the workers thoroughly with harsh labor. One day, Mio insults Hamura, a worker who made a fatal mistake. However, with that as an opportunity, the anger of the workers exploded, and Mio was tied up and tombed! Mio is reluctant to submit as their "female dog for sexual treatment" ...