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?!
I'm somehow getting by for now, 
but I don't know how much mana they have!
!أنا أتدبر أمري الآن، لكني لا أعلم كم من المانا يملكون
Ich komm irgendwie klar, aber ich weiß nicht,
wie viel magische Kraft sie hat.
Estoy defendiéndome como puedo,
pero no sé cuánto resistiré.
Estoy defendiéndome como puedo,
pero no sé cuánto resistiré.
Je peux encaisser ses coups,
pour l’instant,
Per ora sto riuscendo a cavarmela, 
ma non ho idea di quanto mana abbiano questi cosi!
Eu estou até conseguindo sobreviver,
mas não sei que quantidade de mana ela tem!
Вот жесть! Я с горем пополам держусь…