I've got to agree with here - those words are awfully hard to read. Besides that, though, the picture looks great. The shading is excellent, and the characters are drawn really well. Nice job on Riku's hair - I tend to have some trouble drawing it.
My only other complaints worth mentioning are that Riku's face looks just a bit odd, and that Kairi looks a lot more anime-ish than the guys do. Besides that, it looks nice.