The Black Bulls get a sudden visit from Mereleona and she drags them to the strong magic region of the Yultim Volcano. There, the Crimson Lion Kings, as well as their captain, Fuegoleon, and his younger brother Leopold, were waiting for them. Asta and Noelle remember the hot springs they had visited on their previous trip there. Finding new resolve, Magna, Luck, Charmy, Gordon, and Nero all decide to train in the fiery underground cave of the volcano!
There's another reason why 
I chose this underground cave
هناك سبب آخر لاختياري لهذا الكهف التحأرضي
Es gibt noch einen weiteren Grund,
warum ich diese Höhle …
Elegí la cueva
como lugar de entrenamiento…
Si he elegido la cueva
como lugar de entrenamiento…
Si j’ai choisi ces grottes souterraines
comme lieu d’entraînement,
Quando ho scelto questi cunicoli sotterranei 
per l'allenamento intensivo...
Há outra razão porque eu
escolhi esta caverna subterrânea
Есть ещё одна причина,
по которой я выбрала…