Called in to investigate the whereabouts of Yura, the blind woman he'd fallen in love with seven years earlier, Takashiro Shugo is surprised when even her own father tells him it's hopeless. Takashiro travels to crime-ridden Ueno, where Yura may have recently been spotted, and gets a room in a brothel where the busty red-haired madam owes him a favor. As the case unfolds, Takashiro's memories of his first sexual explorations with Yura are vividly brought back as he finds himself seduced by the hot courtesans at the brothel. Could Yura's longtime disappearance somehow be linked to the grisly crimes gripping Ueno now?

Shugo Takashiro is no closer to finding his missing first love, Yura, but the er in Ueno has taken another victim: Otoha, a courtesan from the same brothel he's staying at! Now it's personal, and Shugo resolves to track down the killer, but there are few clues to go on. When busty blonde schoolgirl Takako sneaks Shugo into her dormitory to take her virginity and make her cum, the detective has no idea that it will give him the lead he needs to find the killer...if the killer doesn't find him first!