Wow, the character in these ppl is amazing. You do really well on the folds, as jinx mentioned, something that i had noticed, but not put much into, until reading it in jinx's comment. lol only thing i would say is that Joshua's, (if he's the one with the blue hair) hair is a little too flat on his head, however, i think i'm just being critical, and don't pay any attention to me, because i'm no expert, lol. Really good job.
Sincerely, Ikaika
I love the personality in your characters, which is particularly evident in the poses and expressions of this picture. And your shading is so clean and... well, shiny. The shadows on the top of Sheiji's hair, particularly, though small, really add a lot of shape to it. The clothes folds are nicely rendered, too. Nice work.