Wow...
This movie is so data comprehensive that I'm forced to watch it in low quality, unfortunately for me so I can't accurately review the graphics, but I like what I see, the fog effects and the city look awesome, Sackboy's cloth skin texture, plus the scene inside Sackboy's mind. However, the graphics is most likely why the movie is so slow, so could I ask; if you can find a way to tone it down a bit, please do!
Sounds are great, I have no idea where you found such a long wind sound clip or if you played the same one over and over again, but I didn't notice so thats okay.
Storywise, I was too caught up on the graphics. It seems like with such a huge file size, the story still didn't the major plot development that I expected. True, you did introduce a new enemy, and called Sackboy special, but nothing major really happened. Sorry, that's why I had to stick with a 9.
Anyway, Kudos to you, good luck with your story/series. I looked at the manga too, its pretty cool, and the black and white fits the atmosphere perfectly!