This is the story of two sisters who lost their parents and lived a life of hardship. - The year is 1985. - Sisters who were forced into poverty as the world was in the midst of a bubble economy. - In a situation where it is difficult to live a normal life, his older sister, who is a small but valuable source of income, suffers a serious leg injury. - Living expenses and expensive treatment costs...My sister turns to prostitution in order to survive. - I could hear my sister's gasping voice across the sliding door...My sister felt a strange sense of excitement along with a sense of guilt. - His hand went to his own crotch...