Setsuko lives in an extended Taisho era, bound by a life of sacrifice to protect her family. Her arranged marriage to a stranger is interrupted when her brother dies in a fire, leaving behind an ancient book. This tragedy brings her into contact with Fukurou, an intelligence bureau that manages "Maremono," books capable of profound influence. After the funeral, Setsuko realizes she can see the vibrant auras emitted by these texts, revealing the hidden emotions within the pages.
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