Hikari moves to Tokyo for her first job after maintaining a chaste long-distance relationship with her boyfriend from school. Sexually inexperienced and unused to men, she is smoothly lured in by her senior coworker Oki, who gradually teaches her the pleasures of sex. As her body awakens, Hikari grows into a confident, sensual woman and learns to turn men’s desire for her young adult body to her advantage, ultimately taking control herself.