Bound and helpless, the slave gazes up at his mistress, his cock straining against the unforgiving steel of the chastity cage. She teases him mercilessly, running a vibrator along his trapped manhood, denying him release. 'You exist only for my pleasure,' she purrs, her voice dripping with femdom. She trains him to serve her, his body and mind reshaping to her will. He whimpers, 'Yes, mistress,' as she secures the chastity belt, locking away his desires.