As the sun begins to rise, a sister's curiosity and longing drive her to her brother's room. She climbs into bed beside him, her heart pounding with anticipation. She reaches into his boxers, pulling out his soft cock, and marvels at its growing hardness in her hand. With a deep breath, she leans down, taking him into her mouth, her inexperience evident in her tentative movements. Her brother responds to her touch, his body tensing and relaxing as she explores his most intimate parts.