In the bustling anonymity of the subway, Yumihi's lens captures the thrilling art of chikan - public groping. A man in a suit, with a discreet, hungry expression, surreptitiously reaches out to caress a woman's thigh as she stands, oblivious, on the crowded train. The camera zooms in, the city's hum fading, as his fingers trace the hem of her skirt, inching upward, seeking the warmth between her legs. The woman shifts, and he pulls back, his hand retreating, only to find another target, another thigh to explore in the surging tide of commuters.