Mistress Kira and mistress Sofi were angered by this girl's ungratefulness and they punished her for it. They did it with their feet and turned her into a foot slave. She was scared of the mistresses and she cooperated with them and did what they wanted him to do. And that is how they managed to make her learn new ways of doing things and she changed for the better.
Mistress Sofi was in the mood to try things that she had never tried before. And as she thought about it, she chose to start with toe sucking. The mistress teased this guy who had a thing for her and she got him to lick her feet and suck her toes the way she wanted. And that is how she got turned on like crazy and they fucked like crazy.
Mistress Kira felt that her slave needed to be given a wake up call. So anytime he messed up, she had to find a way to deal with him and the best way she chose to deal with him was to make him lick her smelly socks. The mistress told him she would only stop when he did not piss her off and he did his best not to piss her off as it was humiliating being made to lick and to smell her socks.