Yeah, I had planned on Koji speaking in very short and simple sentences. He's more of a fighter then a talker anyways... Not to mention the frustration he first felt when he arrived and tried to hold casual conversation with the populous. Gave talk the bird and now acts more then he speaks.

Edit: Also, since his clan lives amongst dragons, I'd figure he'd be able to speak the language of dragons. Or at least if the DM is willing.