As Asta and the others were chasing the creature that lived in the cave beneath the Yultim Volcano Trail, they happened upon a dungeon. They were then ordered to explore the dungeon by the royal capital, so they split into groups and went in. They head in with Leopold and Vice Captain Randall, but those two end up running into the creature from earlier. They work together but cannot defeat the monster, which makes Leopold feel useless. At that moment, Leopold remembers the strange feeling he felt when he was fighting the elves, and...
My spell seems more powerful... 
Could it be from all my training?
...يبدو أن تعويذتي أقوى
هل يمكن أن يكون ذلك بسبب تدريبي؟
Mein Angriff hat mehr Durchschlagskraft.
¿Es más potente que antes?
¿Es más potente que antes?
Ma puissance magique a augmenté !
L’entraînement porterait ses fruits ?
Il mio incantesimo sembra più potente! Che sia merito dell'allenamento?
Meu feitiço parece mais poderoso?
Será fruto de todo o meu treinamento?
Моя магия стала мощнее?!
Неужели это результат тренировки?!