NOT a sequel to Ninja Scroll
My god, I am so sick of people bitching about this movie comparing it to Ninja Scroll. This movie is not a sequel to Ninja Scroll. It never was and never was intended to be.
Don't take your frustrations out on this movie because you made a mistake. This story predates Ninja Scroll; if anything, Ninja Scroll is a ripoff of Makai Tensho.
If you want to criticize this movie on its own merits, than please do so. But complaining that it's not enough like Ninja Scoll or Willy Wonka or whatever just makes you look like a moron.