Sketchies: Nabari no Ou

I was watching the anime Nabari no Ou for a while there and finally finished it. I think it's based of a manga series, and the stories in the two of them are a bit different after a certain point. Anyways, I thought it was pretty good (nothing's gonna beat Code Geass though). Granted it's about ninjas, I'm pretty sure its nothing like Naruto (which I refuse to watch/read).
Felt like sketching some of the main characters I like... Especially Kouichi, Thobari-sensei and Yukimi...
Eventually I wanna make something more awesome later.