I think he's howling in grief or something, maybe his family was murdered, I dunno, decide for yourself. He's not wearing any sort of samurai armor, so he might be off duty or something. I don't really like his sword or sheath. The design on his kimono is a serpent or dragon. And he's got his head thrown back, so that's the bottom of his chin, not a poor excuse for a face ;) Oh, and I really liked how the hair turned out.