Armed with a reverse-edged sword (a katana with the cutting and blunt edge reversed), he waged a silent war to maintain peace and order to a directionless country plagued by opportunists and would-be dictators.
Along the way, he meets a teenage dojo master (assistant master, to be exact, and would-be love interest), an orphan son of a samurai, a disillusioned street fighter, a fallen doctor, an obsessive ninja leader, and his greatest rival (the mysterious Wolf of Mibu).
These people will be involved in twists and plots that will have substantial basis in real historical facts.
The animation is superb, so is the special effects.
It is refreshing to watch a series that is historical and captivating. I've been bombarded by giant robots, fantasy and science-fiction animes almost all my life, and that a series like this will strike me odd.
But it didn't. And I liked it. And it's my favorite. For all time.