Good work... just needs some refinement.
First off, great job. Stylistically, it's golden, visually it's pretty good; more detail would be nice. Soundtrack was okay too.
Problems arose from the moment I read your description. 'Ninja's' is posessive, where I'm pretty sure that you meant for it to be plural. There's no apostrophe in "ninjas", when you're talking about more than one ninja. It's just "ninjas".
Why is this important? It hurts your credibility from the get-go. People, without seeing the flash, immediately take you for some 8-year-old if you mess something like that up.
Also, the voices were not well done... especially the quality of the voices... bad microphone?
There's a certain sophistication that comes with making something virtually flawless. People have no time to worry about mistakes or problems when something's great; they just concentrate on what you're doing, the feelings and experience are awesome when there isn't some glaring problem in the foreground.
This is too good not to be flawless, man! Good luck on Ch. 2!