The series has an idiosyncratic style of drawing with ink blobs etc., yet acts like computer graphics. (It's true what another reviewer said here, it is somewhat reminiscent of Okami) - The music I was also very good.
I do not so much go into the content so as not to reveal the final (watch the series necessarily to the end because waiting namely - as with many animes - still a few surprises !!).
In principle, it revolves around the relationship between Samurai (warriors / knights here: Warrior / Knight interior) and the generals. What characteristics must have both? How does this affect me? What consequences arise from this? What effect did certain events on the Japanese culture?
The series plays with different themes and issues, and to get to the end quite well entertained before, in an intelligent way, it is true that apparently many clichés are served, but you should ask yourself. Why is this so?