Only the woman who gives birth to a prince's child can become the queen. In order to acquire the title of the queen in the Ooku, the terrifying inner palace where evil women run amok... Reina lost her life when her husband-to-be stabbed her during their wedding ceremony, but before she knew it, she’d found herself in a parallel universe—and in the inner palace, the royal harem, no less. There, she discovers that she is one of the many women who were selected to be possible candidates for the future queen. Strong-willed Reina attracts the spiteful attention of the other ladies and ends up being forced to perform the initiation dance (naked). Their efforts don’t affect her, but she catches the eye of a prince, who then invites her to his bed... The sweet embraces of princes and pleasure only serve to solidify her desire for the throne…