The prostitution group "Sweet Angel" made money by drugging perverted old men and stealing their money and valuables. The conflict escalated when they made an advance on the rival Kuroshishi-kai... The Kuroshishi-kai put all their efforts into searching for the woman, but they were unable to get a hold of her until they received some information... Ren, the daughter of the Usui Group, which has enormous influence in the political and financial world, was revealed to be a senior member of Sweet Angel. Ren fell into a trap set by the Kuroshishi-kai, was captured, and was subjected to humiliating torture...