In this intimate, explicit exchange, a curious sister can't resist the allure of her brother's throbbing cock. She tentatively wraps her hand around his thickness, stroking gently as he moans in pleasure. Meanwhile, he explores her eager pussy, fingers delving deep while his thumb circles her clit. Their mutual masturbation session escalates, hands working feverishly as they race towards climax. The girl's moans fill the room, growing louder as she struggles to hold back her orgasm. Her brother's cock swells in her hand, and with a final, desperate stroke, he releases, cumming hard onto her palm.