Ōoku: Los aposentos privados

The story is an alternate history anime. It's not meant to be an action or fighting anime. The story has a slice of life feel from the Edo Period. The content has more adult themes than other anime but the story needs these to build into the crisis being experienced. The Ooku being a real entity within the historic Edo Castle lends weight to the story, making the story closer to reality than other anime. Go into this not expecting anything other than alternate historical drama and you'll be pleasantly surprised. Wish there were a couple more episodes in the season but definitely more material for another season.