[Machine Translation] The world is like an Edogawa Rampo novel. Mayumi is on the hunt for her father, the monster Twenty Faces. Known as a great thief, Nijumenso is able to change his appearance into many different faces, so even his daughter Mayumi is unable to find him. Even with the help of her sister, Kurok lizard, who somehow knows the whereabouts of the Twenty Faces. Mayumi is pursued by Egawa Ranko, a disciple of Akechi Kogoro, who is also in pursuit of the Twenty Faces. 5 years ago, Ranko had missed Mayumi and had been resentful of her teacher, Akechi, for his lack of skill. Ranko's attempts to capture Mayumi fail several times, but she finally succeeds in capturing her at the Panorama Kingdom in Komoda City. She is restrained as it is and almost turned into human fireworks. The Detective Boys had hoped that the Twenty Faces would always appear in their daughter's pinch, but it turns out that Mayumi is in fact the very same Twenty Faces. ......!? / / Main Characters / / Egawa Ranko is the main character in the second volume. She is the only girl detective in the Detective Boys under Kogoro Akechi, and has a history of capturing the Twenty Faces and Mayumi five years ago, but they easily escaped. She also has a perverse sexual desire that is aroused by being abused. Ryuji Ohsone is the owner of a large darkroom. Using the funds he has earned from his business as a contract killer, he has unearthed Baron Ariake's vast hidden wealth. He constructs a huge underground empire (the Great Darkroom). A large number of criminals are employed for the excavation work. Confidentiality of this great darkroom seems to be strictly maintained. Kaijin Nijumenso: A great thief who suddenly appears in all kinds of places. Five years ago, he developed multiple personalities. His daughter Mayumi is looking for an opportunity to recover from her multiple personalities. He is the leader of the Scorpion Girl Freak Show. He employs his own daughter, Scorpion Girl, and the Spider Man. He stands at the top of the yokai empire he has built up in the Great Darkroom, and he brings Ranko Egawa into the Great Darkroom with his words! The Human Chair: A monster who frequently appears in "Rampo Amnesia". He is aroused by being sat on by a woman. He becomes Mayumi's companion in the third episode "The Human Chair" and helps her out when she is in trouble. Mayumi was captured by Ranko Egawa at the end of the first volume, but Mayumi's true identity is revealed to be Nijumenso. Mayumi is the mysterious woman who keeps a watchful eye on Mayumi, who is played by the twenty-faced man. Kobayashi is the leader of the Detective Boys under Kogoro Akechi, the "Senior Detective Boys," seven of whom survived a 10-day killing spree. He and Mr. Akechi are in pursuit of the Twenty Faces of the Phantom. He is a private detective who pursues the whereabouts of the Twenty-Faced Monster together with Kogoro Akechi's Detective Boys. However, his disciples became too strong and took revenge on him, destroying his body. According to Mayumi, he is an "apostle of justice and truth.
*Rated 18-and-over.