Took me awhile to get this design down. I don't expect to get anywhere with this one though. When I first saw this contest, I didn't expect to take part in it, but later I got urges to give it a try. If I didn't enter, I probably would've regreted it later... so here's my entry!
Oh yeah! I forgot to mention Kai's pin (The circle on his left sleeve). It has a funny little symbol that I just made up. I guess his pin's special powers let him use levitation... for only a short period of time though. His weapon would be something like a hand-held switchblade. Nothing like a huge sword or anything fancy like that.
This version of Kai is a little bit different. I added the gray drawings in the back to get the theme better... didn't make a big difference though. Oh well, it looks a bit cooler now...
I guess his personality is pretty neutral in general, but he's a hero who would end up helping Neku. He doesn't actually like helping other people, because he prefers to work alone. But he is usually forced into things like groups and alliances.
Another colored version: [link]
Inked and sketch drawing: [link]