In a Tokyo-based esthetic salon, it's routine for staff to perform treatments while wearing panties. This service, popular as a special care method to improve lower body blood circulation, strictly prohibits touching or ejaculation during sessions. However, one day a staff member began teasing clients by visibly displaying an erect cock through their panties, turning the treatment into a sexually charged experience that stimulates the pussy. Captivated by this new approach, an increasing number of clients have started secretly engaging in sex with the staff.