This is the sequel to Kuroinu: Kedakaki Seijo wa Hakudaku ni Somaru Hentai Series.
More than a hundred years after its founding, this country has now reached the peak of prosperity and decadence.
As the Empress controlling this nation spends her days indulging in the pleasures of the mind, body, and soul... other nations who do not abide by these vices band together to form "The Holy Alliance" and prepare to wage war upon the Empress...
