Chastity Slave Gets Branded

My sub is on all fours on the milking table, weights hanging from his balls to keep him still and his ass presented high. First I take a razor and shave his ass smooth - can't have hair where I plan to write. Then I insert a steel buttplug to keep him aware of his place. Finally, I take a stencil and a semi-permanent marker and brand a humiliating message across his ass cheeks. He'll be wearing my mark for weeks to come. This is real chastity slave ownership - no orgasm, just pain and pride as I claim him.