This is the story of a sister who lived a difficult life before her parents. - The time is 1985. - Sisters driven into poverty as the world boiled over the bubble economy. - In a difficult situation to live normally, her sister, who is a small but valuable source of income, suffers a serious injury to her leg and is seriously injured. - Expensive medical expenses for her living expenses ... Her sister runs into prostitution to live. - Her sisters gasping voice heard across her sliding doors ... An older sister who felt strange excitement with her guilt. - Her hands of her extended into her own crotch ...