This was an incredible cosplay, I can't tell you how much fun I have in it!!! When I first saw .hack//SIGN, I immediately fell in love with Sora, and his character, and he is still my absolute favourite!!
A little information about the cosplay:
The hardest part had to be the pants, and the boot covers. Trying to figure out how to exactly pattern them, etc, was extremely difficult. Trial and error helped me figure it out in the end.
The katars weren't hard, but I wasn't exactly sure how to do them. I'm currently revamping them, and will be using plastic.
The wig I custom dyed. This was a last minute cosplay (literally 2 days before con time lol), and I had an old very light green/blue wig, that'd be perfect for him, I just needed to get the right color. So green sharpie dye it was! and it worked very very well! I'm extremely happy with the color of the wig. Now I'm playing with a few different ideas on how to style the wig to keep the bangs up. Humidity did not help ;)
The best part of the entire cosplay is that it's super comfortable, and breathes very well, despite it being black.