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?!
are a product of the queen's Mana Zone,
 which covers the whole kingdom.
نتاج لمنطقة المانا الخاصة 
.بالملكة التي تغطّي المملكة بأكملها
werden durch die Mana Zone der Königin
geschaffen, die das gesamte Land einhüllt.
son obra de la Zona de Maná
de la reina que cubre todo el reino.
son obra de la Zona de Maná
de la reina que cubre todo el reino.
sont dus au mana zone de notre reine
qui recouvre tout le pays.
sono generati dal Mana Zone della Regina, 
che si estende sull'intero Regno.
são produto da zona de mana da
rainha, que encobre todo o reino.
часть зоны маны королевы,
что покрывает всю страну.