Books containing the intense emotions of the author, sometimes with the power to force the death of their readers, these books are known as "cursed tomes". The role of the Imperial Library Intelligence Asset Management Bureau, nicknamed Fukurou, is finding and retrieving these books. As a result of the incident with her brother, Tsugumi has gained the ability to see the auras around cursed tomes and decides to join Fukurou to put her new powers to use. However, she finds Fukurou full of rather unique members such as Ozaki Hayato with a sharp-tongue and a strong sense of justice, Kougami Akira who has difficulty with people, and Hoshikawa Hisui with mismatched eye colors.
Nabari-san is researching 
the cursed tomes here.
.ناباري-سان يبحث في أمر المجلدات الملعونة هنا
Herr Nabari erforscht hier
die verfluchten Folianten.
Nabari es investigador
de tomos secretos.
Nabari es investigador
de tomos secretos.
Navari fait des recherches
sur les livres maudits.
Nabari sta svolgendo delle ricerche
 sui tomi maledetti.
O Sr. Nabari pesquisa
tomos amaldiçoados aqui.
Набари здесь изучает проклятые тома.