Though the Magic Knights were able to save Marie from the Devil Banishers, Nero is taken once again and Asta’s 5-leaf clover grimoire is also stolen. Suddenly, they receive a message from one of Damnatio’s subordinates and learn the true identities of the Devil Banishers and Julius orders the Black Bulls yet again to save Nero. The Black Bulls begin their investigation in the town where they think the Devil Banishers were gathering. Will they be able to find out what the enemy’s true motive?
They say that the devil dwells 
in the five-leaf clover.
.يقولون أنّ الشيطان يعيش في النفلة الخماسية
Man sagt, dass der Teufel
im fünfblättrigen Kleeblatt lebe.
Dicen que la quinta hoja
del trébol alberga demonios.
Dicen que la quinta hoja del trébol
alberga demonios.
« Dans le trèfle à cinq feuilles
réside le démon », dit-on.
Si dice che nella quinta foglia 
alberghi un demone.
Dizem que, dentro do trevo de
cinco folhas, reside um demônio.
Предание гласит, что в Пятилистнике
живёт Дьявол.