Ooku (2010)

It's in the same era only on inverted roles on male instead of female and a much classy setting.

Reverse gender roles. Both dramas revolve around the idea of what it would mean if men where confronted with situations women face. While Hiyama Kentaro no Ninshin deals around the idea that male pregnancy was as likely to happen as female pregnancy, Ooku emphasises on what it would mean if males where put into the roles women faced in ancient historic times.
Both are very bizarre productions but make one question about societal standards and norms.