The story here is that the sub is a persistent masturbator and the master has decided that a variety of punishments shall be implemented for masturbating too much. The master usually has his own cock exposed to the sub's view so that the sub has a good example to follow of a well behaved and not excessively masturbated cock to follow.
Excellent. I would love to use a variety of implements on you myself.
NICE "ending"! Hot.
and start chatting with other like minded users now!