In this adult manga, set in Edo-period Japan, 3/4 of the male population has died due to a mysterious plague. Over time, the people forget that their shogun was not always a woman and that men were anything other than prized pets kept safe for mating and marriages. The Ooku are the men who live in the shogun's inner chambers, a sort of male harem. This is a really interesting take on gender roles, and it really pleases me to see it in a manga setting (which, let's face it, can be sorta sexist at times). Comparisons will undoubtedly be made to Vaughan's Y: the Last Man, but frankly, I like this better.
