On one hand, this game has an incredible amount of detail.
On the other hand, it's too complex for rapid-fire character creation, meaning that you'll take a while.
It has a lot of what I like from the d6 System style, with gifts and drawbacks. They allow ultimate customization of a character, at the cost of extended character creation. The fighting styles should always be presented as the tables in the glossary, in my opinion (and they should be referenced more loudly, since I tallied up my test character's fighting style effects by hand, leaving off only one point.
The game winds up applying massive modifiers to rolls. With +15 modifiers, plus the potential to add even more modifiers, oftentimes the dice become minimally active, taking a role only in the case of a critical failure or success, which oftentimes unbalances play, since the game seems to "fight" the dice, making them irrelevant (when it's possible to get a +10 modifier bonus on your opponent, it's pretty much no surprise as to which way the game goes).
I actually like it, despite its flaws, though, because it has an in-depth world, with lots of flavor and fluff to complement the rules, which are simple, if a mite overly complex.
If you want a ninja game, this is the best one I've seen.
[5 of 5 Stars!]