Thanks to Gordon’s father, Asta and the others were able to find out that there might be clues surrounding the devils in the Heart Kingdom and manage to get permission to enter the kingdom due to the fact that Mimosa had gone there previously to study overbroad. Asta, Noelle, Finral, Mimosa and Nero head to the Heart Kingdom. Asta and the others initially enjoy their trip there, but something that Langris told Finral had been bugging Finral. Suddenly, Asta and the others are faced with a rather unexpected trial. Will Asta and the other Black Bulls be able to obtain information on the devils?!
A curse... That might be a clue about 
the devil that Mother encountered.
لعنة... قد يكون ذلك دليلًا 
.عن الشيطان الذي قابلته أمي
Der Fluch birgt womöglich Hinweise
bezüglich dem Tod meiner Mutter.
Una maldición… Podría darnos pistas
sobre el diablo que conoció mi madre.
Una maldición… Podría darnos pistas
sobre el diablo que conoció mi madre.
Cette malédiction a peut-être un rapport
avec le démon qui a maudit ma mère.
Una maledizione... potrebbe essere un indizio 
per scoprire di più sul demone incontrato da mia madre.
Uma maldição... Pode ser uma pista para
o demônio que minha mãe encontrou.
Проклятие…