The metro's dim lights flicker, casting eerie shadows on the faces of the late-night passengers. A nervous virgin, dressed in her school uniform, stands alone, clutching her backpack. A mysterious stranger, dressed in a tailored suit, sits across from her, his eyes never leaving her innocent form. As the train screeches through the night, he stands, moving towards her, his intentions clear. She freezes, her body trembling with a mix of fear and excitement. He leans in, his lips brushing against her ear, whispering, "It's your first time, isn't it?" She nods, her breath hitching as he guides her hand to his throbbing cock, teaching her the art of pleasure in the most public, most taboo of ways.