The story of how I teased, fondled, and licked the breasts of a sex-naive junior who'd just moved from the countryside, giving her a crash course in sexuality. Hikari came to Tokyo for her first job, maintaining a pure relationship with her boyfriend from school days despite the long-distance. She started her new life as a working adult completely ignorant about sex. Unaccustomed to men, Hikari was skillfully lured by her senior, Ohki. Though bewildered, she was gradually taught the pleasures of sex. Wet with pleasure, Hikari gradually blossomed into a sensual woman. Using her youthful body to turn men's desires against them, she transformed into a woman who took control.