GVG-603 Busty widow Kokone Mizutani who is gang-raped by an old worker and turned into a sex slave

Kokone is a spendthrift wife whose husband runs a factory. - However, when her husband suddenly passed away, the factory management quickly went into flames. - Even in such a difficult situation, the old employees who have been working for Kokone for many years become enraged by Kokone's wasteful habits and decide to take revenge. - He imprisons Kokone in a factory and trains him as a sex slave by ejaculating her repeatedly. - And also, changes occur in Kokone's body as he continues to be raped...