From the introduction:
Everyone knows about Ninjas.
They are so awesome that everyone wants to be like them. They can kill anyone they want! They cut off heads ALL the time and don't even think twice about it. These guys are so crazy and awesome that they flip out ALL the time
This game let’s you play a Ninja, but not any kind of Ninja; a REAL Ninja, and that’s why is so cool; and by cool, I mean totally sweet.
That’s why it’s called the REAL ULTIMATE POWER ROLE-PLAYING GAME!!!!!!