The Female Torture Research Institute is eternal... The terrifying grudge of Director Tsujimaru becomes a raging humiliation, assaulting the body of Nakahara Shinji (Princess River Clan kunoichi), an executive of the Central Intelligence Bureau. She desperately tries to control her own body, but pushed to the limit by shame and humiliation, the succubus within her is drawn out. Then, turned into a monster of pleasure, she screams as she reaches climax again and again. Will Shinji regain herself? Or will she fall completely?
