I found the series to be a huge, huge disappointment. True, it follows more or less the same blueprint as the film, but it lacks the movie's wicked sense of style, not to mention Kawajiri's eye for spectacular set-pieces. The animation is also some of the worst Madhouse has ever produced. Far too reliant on poorly implemented CGI, and some of the character designs are downright atrocious.
Still, if you’re desperate for more ninja-on-ninja action you can always import the far superior Basilisk TV. It’s much closer, in both spirit and execution, to the original Ninja Scroll movie and the production values are top notch, even by Gonzo’s usual standards.