A sudden tragedy befalls... School girl Yuki becomes the target of the Serial Erotic Killers brothers, perverted criminals who manipulate young girls against their will using their financial power. They run a twisted operation through a mansion called the "Lewd Chamber" where they freely buy and sell girls and assault their young bodies, a series of insane acts. Yuki gets caught up in this absurd situation and is left wondering what is happening to her own body and mind, and how the other girls are feeling and what they are thinking... As the truth becomes clear, the reader is shaken by the terror and sorrow.