Goddess Nika had made this guy wear a chastity device and he was struggling to do it. She was pissed at him as she thought that he would understand how to use it on his own. But now she had to step in and she did. The mistress had the guy do it the way she wanted. It was fun and she ensured that she also made him feel a little pain in the process.
Goddess Nika wanted to get this guy to wear a chastity femdom. She was sort of seeing him and she wanted him to be faithful to only her and that is why she did it. So she used her gorgeous ass to bait him and she made him wear it and she hid the key. Once he had worn it, she ran away and pretended she was busy for him not to ask her for the key.