Nitta Konomi's current challenge is to overcome her inhibiting sense of embarrassment through "eromental training" and to develop an "erospontaneous" body that instantly switches into arousal. Her special training begins when a sudden male performer appears during work and forcefully exposes her lower body, thrusting his cock inside. With her coworkers' eyes around her, the intense conflict between shame and pleasure grows stronger. All eyes are on how Nitta will handle this rigorous training.