In a Japan where the Taisho Era didn't end after 15 years but went on for another 10 additional years the eldest daughter of the financially declining Kuze family, Tsugumi, resolves herself to a marriage she doesn't desire for the sake of her family. However, Hitaki, her younger brother, vehemently opposes the marriage and after a fight with Tsugumi, shuts himself away in his room and attempts to kill himself. Tsugumi blames herself for her brother's suicide, but two mysterious men appear identifying themselves as part of the Imperial Library Intelligence Asset Management Bureau and reveal that her brother's suicide might not be as clear-cut as it seems.
There will be further damage 
if they aren't dealt with.
.قد ينتشر ضررها إن ظلّت لوحدها
Sie richten mehr Schaden an,
wenn man sie unbeachtet lässt.
De no hacerlo, 
los daños serían inmensos.
Los daños serían inmensos de no hacerlo.
Notre action limite leurs dégâts.
Perché, altrimenti,
 episodi come questi aumenterebbero.
Os danos podem se espalhar
se não forem controlados.
Если их оставить,
они будут вредить и дальше.