Hayato's friend from his college days and newspaper journalist, Yoshikiri Takuma, ends up trying to kill himself after reading a cursed tome disguised in the form of a mysterious letter planted in his bag from an unknown sender. He seems to have been targeted after getting too close to linking Karasu to the fake cursed tomes. With the help of Yoshikiri's information Fukurou learns of his suspicions regarding Karasu, but before they are able to make a move Tsugumi is taken.
I believe the workshop where fake 
cursed tomes are being created
أعتقد أنّ المعمل الذي تُصنع فيه
المجلدات الملعونة المزيفة
Ich vermute, dass das Seminar
zur Herstellung falscher Folianten
Creo que los tomos malditos falsos
se crean en el sótano de Nachtigal.
"Creo que los tomos malditos falsos
se crean en el sótano de Nachtigal".
Credo che il laboratorio dove vengono
creati i falsi tomi maledetti
Acredito que o local onde os
tomos falsos estão sendo criados
Я считаю, что мастерская,
где создают проклятые тома,