Mena Li, the elder sister, takes charge, pushing her brother onto the bed. She straddles him, her lush lips inches from his growing bulge. She leans in, her breath warm, and whispers, "I've been bad, brother. I need you to teach me." Her tongue flicks out, licking the length of him through his pants, feeling his hardness grow. She grinds against him, her wetness soaking through her panties, eager for his touch.