Japan in the early seventeenth century was a wild place. Serial killers stalked the streets of Kyoto at night, while noblemen and women mingled freely at the imperial palace, drinking sak and watching kabuki dancing in the presence of the emperor's principal consort. Among these noblewomen was an imperial concubine named Nakanoin Nakako, who in 1609 became embroiled in a sex scandal involving both courtiers and young women in the emperor's service...