Kouzou returns home to his family, maintaining a facade of kindness and earnestness before his wife, Kayoko. However, behind closed doors, he engages in a volatile power struggle with his daughter Airi, who openly despises his perverted nature. Taking advantage of their mother's brief absence, Kouzou forces Airi into a sexual encounter as "punishment" for her insolence, while Airi accuses him of manipulating other girls for his twisted research.