On her way home, Rina is suddenly captured by a man and wakes up to find herself violently raped. Day after day, she is forced to serve as a living sex toy to satisfy his desires. Gradually, her body begins to change. Her delicate frame awakens to pleasure, transforming her into a lustful girl who actively craves the man's rough touch. Her body, overwhelmed by sexual stimulation, starts to delight in the penetration of his thick cock, moaning and climaxing uncontrollably. As these pleasure-filled days continue, they begin to reshape her mind as well.