Silly slave. You lost your emergency key. Now this one around my wrist is truly the only one that unlocks your cage. Is that scary for you? Before, we were only playing with the control I have over your cock. Now, I really have full power. Now, I might never give you this key back. You could be stuck in chastity for the rest of your life. Isn't this what you wanted? Wasn't it your ultimate fantasy? This is real chastity. You'll have to be on your best behaviour to earn it back... but I think you need to be teased and punished first for being so careless with your possessions.