In the dimly lit room, the siblings huddle together, their breath ragged with pent-up desire. The brother, his cock straining against his loose pants, watches as his sister's fingers trace the outline of her nipples, visible through her thin, sweat-dampened dress. Their eyes meet, and in that moment, all thoughts of their faith and the fasting month are pushed aside. She leans in, her tongue flicking out to taste the bead of pre-cum on his tip, her moan muffled as she takes him into her mouth, her head bobbing in rhythm with their shared, forbidden rhythm.