Nil Admirari no Tenbin

A girl from a declining family decides to marry a man she does not know in order to secure her future. Before the wedding, her younger brother dies by self-immolation with an old book in his possession. The Imperial Library Intelligence Asset Management Bureau, known as "Fukurou," appears and explains the existence of "Maremono"—books that strongly influence their readers. After the incident, the girl gains the ability to see "Auras," the emotions of Maremono that appear as visible lights. Despite her fears, she decides to step beyond her sheltered life. As she navigates through emotions like jealousy, hatred, and love, she encounters the growing darkness of betrayal in the imperial capital. Whether she will uncover the truth remains uncertain.