Under the watchful gaze of their strict parents, the siblings retreat to their separate rooms, but the tension between them is palpable. The brother, unable to resist, sneaks into his sister's room. She's waiting for him, her body clad only in a thin nightgown, her nipples hard against the fabric. He presses against her, his hands roaming her body, lifting her nightgown to reveal her bare pussy. She gasps as he fingers her, her hips moving in rhythm with his touch. When he replaces his fingers with his throbbing cock, she moans, her nails digging into his back as he pounds into her, their bodies slick with sweat, their breaths coming in ragged gasps.