In order to find out more about the forbidden curse, Asta, Gordon, Grey, and Gauche head to Gordon's house, since he comes from a family of famous curse mages. Once they get there, they can't help but show their wariness towards Gordon's family. But in the end, they end up finding out valuable information while they're there. Meanwhile, Noelle goes to talk to the Dorothy Unsworth, the Captain of the Coral Peacocks, after her brother tells her to talk to her to find out the truth behind their mother's death. Dorothy tells her the name of the devil who had killed her mother, and the same name is spoken by Gordon's grandmother. That devil's name is...
Black Oil Creation Magic: 
Curse-Filled Nails.
.سحر تشكيل الزيت الأسود: الأظافر المحشوة باللعن
Schwarzölerschaffungsmagie:
Fluchbelegte Fingernägel.
Magia de Creación
de Aceite Negro: Uñas Malditas.
Magia de Creación de Aceite Negro:
Uñas Malditas.
Sort de création d’huile noire,
ongles maudits !
Magia di creazione di olio nero.
Unghie maledette.
Magia de Criação de Óleo Negro:
Unhas Repletas de Maldição.
Магия созидания, чёрная жижа:
Когти проклятого!