The crowded train wagon hums with the rhythm of the tracks, but Markus' heart beats faster as he sneaks a touch under Miss Fan's dress. Her panties are damp, his fingers sliding easily along her slit. He dares to push the fabric aside, his middle finger finding her clit, rubbing it gently. Miss Fan's breath catches, her hands gripping the handrail tighter. Markus' hand moves in a slow, steady rhythm, his eyes locked on her face, watching her fight to maintain her composure in the crowded train.