As the company's secretary, Kaori Wakaba gets dragged into the "underground duties" of her job, thrust into an abnormal office environment where public sexual harassment is allowed. Covered in cum, this pheromone-emitting older sister figure struggles to maintain her composure while fighting to secure her position as the team's top performer. A special training program pushes her to master erotic etiquette and vulgar manners, honing her secretarial skills to perfection. Experience a unique workplace where professional secretarial prowess merges with underlying sensuality, blurring the lines between duty and desire.