Newly appointed teacher Kaori Hiramatsu was once a highly successful individual investor, renowned even among securities dealers, but chose to fulfill her childhood dream of becoming a teacher. Immediately after her arrival, she became the advisor for the Economics Research Club, quickly establishing herself as a central figure at the school. Meanwhile, Sakamura, one of the club members, aimed to start his own business during his studies and took a strong interest in Kaori's sudden appointment. To him, Kaori herself was immensely attractive, an allure that naturally included sexual desire.