What is Yusuke Urameshi?

Main character of Yuu Yuu Hakusho; a little ghetto boy who gets hit by a car so that another little boy can live. He meets up with Botan, the Grim Reaper, who eventually hepls him come back to life. Once he's alive again, Yusuke becomes a Spirit Detective, helping Botan and Koenma find bad guys from other worlds.