Only Harry Potter could manage to put on a magical collar on impulse and find himself unable to take it off again. Now following Draco’s direct orders gives him intense pleasure, and Draco has a whole heap of troubles to deal with, not least the way Potter looks when the collar has him gasping with bliss. The whole situation would test the morals of a saint... and Draco’s no saint.
Only Harry Potter could manage to put on a magical collar on impulse and find himself unable to take it off again. Now following Draco’s direct orders gives him intense pleasure, and Draco has a whole heap of troubles to deal with, not least the way Potter looks when the collar has him gasping with bliss. The whole situation would test the morals of a saint... and Draco’s no saint.