It is the end of the Edo Era, a flourishing period when stylish civilians, samurai and old-fashioned farmers live peacefully together. 
However, if you take a closer look at their lives, you'll notice that it is actually a parallel world in which modern conveniences, such as cellular phones, personal computers, microwave ovens, motorcycles, subways, and so on, exist. If you enter a night club, you'll find young people dancing to blaring trance music. However, you will also find that they wear kimonos, that the darkness is illuminated by candles, and that the stage is covered by tatami mats! While the people reflect the fashions and manners of the Edo Era, they reside within a strange world where the "present" and the "past" coexist. 
Welcome to the Yoshimune world that no one has ever seen! 
(Source: AnimeNfo)