Light Novel Tombstone city Sogen SF Library

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Hundreds of years have passed since the collapse of the old civilization. Many people did not want to live on the earth and lived in a huge underground city state. In one of these cities, Ricoletta, where the Victorian class society thrives, knowledge of the old civilization is a serious taboo. In the midst of this, a historian named "Prometheus" who was involved in a secret plan was killed. The activities of the female investigator Malone are somehow interfered by the upper management. And the laundry daughter Jane, who goes in and out of the aristocratic society, meets the mysterious man Arnaud and gets involved in the incident.