Our keyholder, a master of mental domination, toys with her eager slave's mind. She whispers commands, planting suggestions deep within his psyche. His cock, trapped in its cage, twitches and throbs with anticipation. She runs her fingers along the cage, tracing the outline of his desperate cock. "You will cum when I tell you to," she murmurs, her voice like velvet. She edges him, bringing him to the brink time and time again. Finally, with a cruel smile, she gives the order, "Cum now, pet," and he obediently releases, filling his chastity device with pent-up cum.