DVRT-023 Raped his son's wife

My grandfather fell seriously ill, and my childhood friend's boyfriend, who had a job in Tokyo, returned to his hometown for the first time in 5 years. After he went to Tokyo, we gradually lost contact with each other and could no longer call him lover. Having not seen each other for a long time, we searched for each other's bodies to fill the five-year gap. At that time, my grandfather's condition suddenly worsened and he contracted Sasaramosara...