When Heaven Enslaves Hell - Demon! Destiel

This story takes place after the War of Heaven and Hell. Heaven has won, and has completely taken over Hell, (what little was left of it, anyways) and has even enslaved most of it already. Castiel has been accepted back into Heaven, while Dean and Sam have been turned into Demons during their time in Hell. Angels are assigned one personal Demon, and three normal servant ones. The rank of the Angel determines the rank of the Demon. All Demons are drained of their abilities, and must wear iron collars at all times. The collars have extremely powerful binding magic etched into them, preventing whomever, or what ever, from using any of their powers. Angels are to treat the slaves for what they are: slaves..