GVG-603 A busty widow, Shimitani Kokone, turned into a sex slave by being gang-raped by elderly workers

Kokone, the wife of a factory owner, is a spendthrift. But when her husband suddenly dies, the factory management quickly goes to hell. Despite this dire situation, Kokone's spending habits show no signs of abating. Long-time elderly employees, enraged by this, decide to take revenge. They imprison Kokone in the factory, repeatedly perform internal ejaculation, and train her as a sex slave. And then, changes begin to occur in Kokone's body, which continues to be violated…