In a quiet moment alone, stepsister and stepbrother sneak a glance at each other, their eyes lingering longer than usual. She bites her lip, he adjusts his pants. Boldly, she approaches, pushing him onto the couch and dropping to her knees. With a coy smile, she unzips him, releasing his throbbing cock. She teases it with her tongue, tracing its length before taking it into her warm, wet mouth. He groans, fisting her hair as she bobs up and down, her hand working his shaft in tandem. She looks up at him, eyes watering, before taking him deep into her throat. His body tenses, and with a final thrust, he explodes, filling her mouth with his hot cum. She swallows every drop, licking her lips.