Carmen Rivera, the enchanting mistress, delights in the submissive's eager anticipation as she dons a black latex glove, coating it with lube. Her eyes sparkle with dominance as she firmly presses her fingers against the slave's quivering anus, feeling the tight resistance. Slowly, she pushes in, watching the slave's face contort in pleasure-pain as her fist disappears inch by inch into their yielding posterior. Carmen's wrist twists and turns, exploring the depths of the slave's insides, their moans echoing her satisfaction.