I am curious: has anyone here read the manga Blade of the Immortal (Mugen no Juunin), by Hiroaki Samura?
If you haven't, I must inform you that it is an extremely well-crafted series, and ranks among my absolute favorites. The artwork is edgy and detailed, the story is unpredictable and engrossing, the characters are dynamic and developed, the historical background is accurate and interesting, and the various philosophies presented are fascinating to consider.
Regarding the characters, I have to say that I appreciate the way the author avoids applying a "good" or "evil" label to anyone. Each character has his/her own agenda, with his/her own history and reasonings, and they're all constantly evolving. With one notable exception (that freak Shira--*shudder*), none of the characters are portrayed as strictly "wrong" or "right" in their endeavors.
One of the downsides, I suppose, is that this series is clearly intended for mature audiences. It contains language, violence, blood, adult themes, torture, implied rape, and a small collection of other items that I'm sure conscientious parents wouldn't want their little 'uns exposed to.
Again, I must stress that this is a strictly 18-and-up title. If it were a movie, it would be rated a hard "R."
If you're over 18 and not bothered by the mature content, though, give it a try! It's an excellent find, one worth sampling!