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...
Mereoleona showed up at the 
Black Bulls' hideout without warning,
،حضرت ميريوليونا إلى مخبأ الثيران السوداء من دون سابق إنذار
Mereoleona, die plötzlich im Hauptquartier
des Schwarzen Stiers erschienen war,
Mereoleona irrumpe
en la sede de los Toros Negros
Mereoleona irrumpe
en la sede de los Toros Negros
Mereoleona rend inopinément
visite au Taureau noir
Mereoleona è comparsa senza preavviso
 alla base del Toro Nero
Mereoleona apareceu no QG dos
Touros Negros sem aviso prévio,
Ни с того ни с сего
в убежище «Быков» пришла Мереолеона…