LOL, Guyver, you make me laugh. Any way yes I've seen Ninja Scroll, I have it on tape. It's just a movie, not a series, mabie your thinking of Ninja Resorection. Japan has allway done there own thing, it's the US that wants to be like Japan, in the animation departemt.
As for the tilte you might want to change it to Scroll of the Ninja or something, just to avode such confution. Any way those little detail do take away a bit from the game. I'll list the ones that come to mind.
Chairs, most of the time the Japanese sat on the floor or a least on some sort of pillow, the tables are only 2 feet high.
Some of the weapons are named incorectly. A quick search on google will fix this.
Most building back then where made of wood, not stone.
They didn't have street lights, or the chininese laturns (unless it was a festivel). The didn't use lanturns hung from the celling, the used candles on top of poles, kinda like those high wattage lamps.
That's all i can think of for now, I don't want to sound rude or something, I'm just pionting out thing that may make you game a little less profecial looking.
This is Truth!
This is my Belief!
...at least for now.