GVG-681 Michiru Aika, a busty widow who is gang-raped by an old worker and turned into a sex slave

Michiru is a widow who has taken over the management of the factory according to her husband's will. However, due to differences in management policies with her late husband, Soichi, a feud arises between her and the factory workers. Michiru begins to have a strong dislike for the old factory workers and tries to close down the factory, but the factory workers, sensing this, can't control their anger and desire and attack Michiru, imprisoning her and doing their best to torture her. ….