The air in the small room is thick with tension and the scent of their shared arousal. Michelle, her heart pounding, tentatively reaches out to touch her brother's cock, feeling its length and thickness through the fabric. Her brother gasps, his hips bucking slightly at her touch. Michelle's pussy clenches, imagining that cock inside her, stretching her virgin walls. She pulls him closer, their bodies pressing together, their breaths coming in ragged gasps. They're teetering on the edge, their virtue hanging by a thread, when a loud knock at the door jolts them back to reality, their hearts racing as they scramble to compose themselves, their secret lust lingering in the air like an unspoken prayer.