This guy has a foot fetish and when he saw mistress Nyx, he knew she must have sexy feet. He was right. He talked her into showing off her sexy feet and when the mistress saw the effect her feet had on him, she chose to tease him some more and it was a lot of fun all around. She turned him on and she also made him cum on himself without touching him.
Mistress Nyx poured strawberry syrup and other things on her feet and got her feet all messy. But she did this on purpose because she wanted to humiliate her slave. So she ordered him to lick her feet and he could not resist it as he knew what would happen if he did not do as she wanted him to. He tried to sweettalk her into stopping it but she ignored him.
This mistress was not just bored, but she had a lot of time on her hands. So she had to come up with a way to pass it because time was not moving. She lay in bed half naked and she used her feet to kill her boredom. The mistress recorded herself playing with her feet and using the to tease an imaginary man and that is how she passed time. She watched it all back and enjoyed it.