An ordinary high school student receives an intriguing smartphone app from a mysterious succubus visitor. Curious about its hypnotic capabilities, he decides to test the tool on his bold gyaru classmate and the school's rigorous disciplinary committee leader. The app quickly takes effect, reshaping their attitudes and drawing them into a compliant dynamic that alters the balance of power around him. As the first day unfolds, the student begins to explore the app's full potential within his daily school life.