Tsugumi was abducted as she was returning to the apartment and taken to Nachtigal. Shiginuma Takashi tells Tsugumi that he will take advantage of her powers and have her bear his child to succeed him. Meanwhile, having ascertained that the fake cursed tomes are being made in Nachtigal, Rui and his Kagutsuchi companions infiltrate the grand building in order to put a stop to this. In the midst of the confusion, Hayato, Hisui, and the others make their way into Nachtigal to search for Tsugumi. During the search, Hisui comes face to face with Professor Mozuyama, who has conducted numerous human experiments.
If you don't have enough 
fuel, shall I tell you more?
،إن كنت لا تملك حافزًا كافيًا
أيجب أن أخبرك بالمزيد؟
Wenn du nicht genug Zunder hast,
soll ich dir dann mehr erzählen?
Si no tienes motivación suficiente,
¿quieres escuchar más?
Si no tienes motivación suficiente,
¿quieres escuchar más?
Si tu as besoin d’huile pour ton feu,
je vais te donner les détails.
Se ti manca benzina, 
forse dovrei raccontarti qualcos'altro, eh?
Se não tem combustível
suficiente, devo dizer mais?
Если тебе не хватает стимула,
может, тебе ещё кое-что рассказать?