Suoh with his throwing knives, from episode 6. He frantically searches the halls of Casablanca's mansion for Nokoru, and here prepares to deal with a guard who is reluctant to divulge Nokoru's whereabouts. (Suoh only pins him against a wall, of course.) :-)

Suoh's family has a tradition of serving as bodyguards, but though they are widely sought-after they always choose the one whom they will serve. This episode is a flashback to how Suoh and Nokoru met, and how Suoh chose Nokoru as the one to whom he would pledge his loyalty. It is this steadfast loyalty that makes Suoh one of my favorite characters in anime.