GVG-362 Yui Hatano, a busty widow gang-raped by old workers and turned into a sex slave

Yui lost her husband, who ran a factory, and the three senior factory workers who work there continue to work there. Even after losing their master, they continue to work there. However, one day, when they learn that the factory's financial situation is deteriorating, they become angry at Yui and, fearing that they will lose their jobs, assault her...