^Ripper's Anime Page

When surfing the web yesterday i stumbled over this blog, which describes similarities in Yukito's and Frank's work.

http://blog.adlo.es/2007/08/swipe_of_th ... iller.html

The Ninjas look very much alike!

You re late, man.
This has already been discussed here in many topics.
In short, the quotations are intentional, and you have many references to Frank Miller (and not only) in Kishiro's universe.
Take a look in Ashen Victor, for example.