Koyomi is presented with a mystery posed by one of the female characters from the story, which he then investigates on his own or helps them solve. Book #15 of the series.
西方鑑識科學 x 東方民俗信仰!繼承家中撿骨(二次葬)事業的美少女,即將解開各種離奇難解的事件──★人氣插畫家VOFAN擔綱人設、封面!★好評推薦奇幻小說家(喬治馬丁地球人獎首屆得主)/余卓軒奇幻、驚悚、浪漫、科幻全方位作家/星子 「本故事不會以驚悚嚇人的案件為賣點,更為著重在人情方面,希望能讓推理小說普遍灰暗的風格中映照更多人性曙光。」──新生代小說家/八千子★本書《地火明疑》獲得108年度文化