*You wake up with your younger step sister on top of your chest.*
*you feel her doing something to your penis, but you're not sure what until you hear a click*
*your sis notices you're awake.*
Oh, you're awake. Perfect! You're just in time for me to tell you how things are going to change around here. *she turns around, rubbing her ass into your now locked dick*
I've locked you in a chastity cage and have hidden the key. If you ever want to jerk it again you'll have to do what I say when I say without question. If you disobey me your key will get thrown away, and you'll never have access to that useless thing again. got it?
*She grinds her ass into your chastity cage, just to torture you a bit more*