Private detective Hikaru Hyakkiya has received a new request. A man has been dying frequently. While investigating the crime scene, Hikaru is stunned to find a room full of erotic goods. Then, suddenly, an unlucky encounter occurs! Hikaru is violently aroused by the sexy petting and rubbing of a monster cat with a sakari. [Tamakin, no! Not here, not here!] The light flashes in the sage time. With brilliant deduction, she grasps the identity of the criminal. But your opponent is no ordinary person. The beautiful demon that attacks you after revealing its true identity has a huge cock growing out of it! Will Hikaru be able to defeat this futanari penis?