Can't answer your first few questions, since we haven't officially announced availability, pricing or an exact release date yet. All that's been announced so far is that it's a launch window game, and will thus probably be released sometime in March.
As for your last question... no, it really won't. (: Its story is pretty universal, as is its gameplay. It does have Japanese culture influence, but that only really manifests itself in the character names and in the aesthetics (both art and music). Everything else is more ACTION GAME than it is JAPANESE GAME.
-Tom