Ifu shimai: Darashinai kahanshin.

Half-sisters Meri and Hari lived happily together under foster parents. However, when Meri was taken in by her biological mother, they were separated. Eventually, their mother passed away, and the sisters were reunited. Meri, who was addicted to alcohol, cigarettes, and men, felt relieved that her younger sister had grown up pure, unlike her. However, Hari was disappointed when she saw her sister's depravity...