He started to slow at another red light when he noticed Sin leaning in toward the passenger window, opening his mouth and breathing on it so fog curled against the glass. Despite the fact that it was April, the ever present cloud coverage prevented any rays of sun from warming the Earth. It may as well have been January.
It was such a child-like thing for Sin to do that it distracted Boyd and he looked over. He never would have expected to see the man known as an psychopathic assassin do something a ten year old would do. The impression only grew when Sin reached up with one long finger and started drawing on the window.