The creaking hinges of the closet door signal the initiation of their secret ritual. The sisters, dressed in modest attire, slip inside, their breaths shallow with anticipation. Their stepbrother, innocent and unaware, stands before them, his cock tents his pants. Michelle, the elder, reaches out first, her fingers trembling as she unzips his fly, revealing his engorged member. She looks at her sister, then back at the cock, her piety warring with her lust. She tentatively licks the head, tasting the pre-cum, before taking him fully into her mouth. Her sister, unable to resist the sight, joins her, their tongues dancing around his shaft as they worship his flesh, their moans muffled by the closet walls.