In an era of economic downturn, people's desires swirl deeper and more secretly. The underground sex industry stands as its symbol, where illegal establishments conduct explicit acts and near-public indecency. This report uncovers the hidden world—unlicensed brothels, apartment-based sex operations, amateur housewives, female college students engaging in compensated dating in love hotels, live nude shows at encounter cafes, and strip theaters. Cameras infiltrate these immoral spaces where women gather to fulfill desires, exposing their raw, unfiltered reality.