Karasu's name means "crow", and he seems to fit the name. He's always dressed in black, his hair is black (it only turns yellow when he becomes more powerful, like Super Saiyajin from Dragonball!).  He's cold and ruthless and specializes in using bombs.  He likes Kurama and apparently wants to kill Kurama because of that reason.  His philosophy is "What's the point in loving something if you can't kill it?" Anyway, he was on Toguro's team in the Ankoku Bujutsukai, and he fought against Kurama. Even though Kurama killed him, the unfair judges still decided that Kurama lost the fight because he wasn't standing up for more than 10 seconds.

Seiyuu: Horikawa Ryo (thanx to Ice Wind for telling me!)