Ōoku, vol 7

"In Edo period Japan, a strange new disease called the Redface Pox has begun to prey on the country's men. Within eighty years of the first outbreak, the male population has fallen by seventy-five percent. Women have taken on all the roles traditionally granted to men, even that of the shogun. The men, precious providers of life, are carefully protected. And the most beautiful of the men are sent to serve in the shogun's Inner Chamber... Ienobu's heir is still just a child, and with few official functions to perform, the men of the Inner Chamber find themselves with much time on their hands. Some find ways to make the most of their rare trips outside the palace, while others turn their minds to bloody intrigue" -- from publisher's web site.