HOKS-023 - Pleasure game, poor sisters and a dilapidated apartment

This is the story of sisters who lost their parents early and lived a life of hardship... The year is 1985. While the world was booming with the bubble economy, the sisters were driven into poverty. In a situation where it was difficult to even live normally, the older sister, who was the small but valuable source of income, suffered a serious leg injury. With living expenses and high medical bills... the younger sister resorts to prostitution to survive. The sound of her sister's moans coming from behind the sliding door... The older sister felt strange excitement along with guilt. Her hand reached down to her own crotch...