Sofia, the insatiable stepsister, takes the initiative, straddling her stepbrother in their shared room. Her tight pussy grinds against his throbbing cock, hidden beneath his jeans. She whispers naughty nothings, her breath hot and heavy on his ear. He responds, his hands exploring her curves, one slipping under her skirt to find her soaking wet. Their pace quickens, the sound of their bodies slapping together echoing through the room. Sofia's moans grow louder, her orgasm approaching as she rides him harder, faster, until they both collapse in a sweaty, satisfied heap.