It was a rule of his, to never get too close to his Detectives.
It sounded horribly slavish: they worked for him, they gave up their lives, sometimes literally, always metaphorically, at his slightest whim, yet he never treated them like real people, never got to know them, but it was in the best interest of both of them, really.
He had to stand alone, to move on when they left or died. They had to be able to retire without feeling bad.
But then again, Koenma thought, pulling himself onto the Spirit Beast, Yusuke never was good at following rules.
A/N: Another one of those ideas that I just couldn't get rid of. Please review!