Throbbing member demands attention from timid sister

Brother and sister, left alone for the weekend, find themselves in a power struggle. She taunts him, pushing his buttons, until he snaps, pinning her down on the bed. She struggles, but her body betrays her, her pussy dripping with desire. He notices, his cock hardening in his jeans. He grinds against her, making her moan despite herself. He reaches down, rubbing her clit through her panties, then tears them off, fingering her until she's writhing with need. He unzips his pants, letting his massive cock spring free, and she eagerly spreads her legs, welcoming him inside her tight, virgin pussy.

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