The story so far is pretty generic. I've never really played Ninja Gaiden, but I bet it's probably pretty close to past stories.
Either way, the game is all about the action. If I wasn't still working on becoming completely fluent in Japanese, I'd be skipping the dialogue.
Either way, the game is all about the action. If I wasn't still working on becoming completely fluent in Japanese, I'd be skipping the dialogue.