In her second year as a company employee, office lady Hinano works as a tea pourer. Rumor has it she's slept with 80% of the male staff. Within a system where she earns workplace trust while being "developed" as a woman, she rises through the ranks by increasing her erotic index. Despite her airheaded and easygoing personality, Hinano harbors an unyielding nymphomaniac spirit, turning client after client into her devoted lover. Here comes her lust-filled sales journal, splattered with sweat and pussy juice!