Riri Kuhabara, who has been entrusted with training the nurses in the newly established special ward, hands Kuhabara the Manno Key and the hearing aid in order to find out the weaknesses of the nurses. Kuhabara uses her spying device to learn that her girlfriend, Karen, is in love with her love. The first person he set his eyes on was Sakiyuki Tezuka, a pediatrician. She lures Saki to a special ward under the guise of treatment for autonomic nervous disorder. What awaited Sakiyuki there was humiliation and training by multiple men.