While the Clover Kingdom was trying to get back onto its feet, the citizens learn that the one behind the destruction of their homes is called the devil, and many of them grew to hate the devil. Some of these people had gathered and created a group called the Devil Banishers. Because the Magic Parliament did not immediately punish the supposed servants of the devil, they decide to go after Asta and Nero and take matters into their own hands.
Of course this happens 
when Theresa isn't here...
...بالطبع سيحدث هذا في غايب تيريسا-سان
Ausgerechnet wenn
Schwester Teresia nicht hier ist.
Tenían que venir cuando no está Theresa.
Tenían que venir
justo cuando no está Theresa.
Il fallait que ça arrive
quand Theresa est absente !
Doveva proprio succedere ora 
che Theresa non c'è...
Claro que isso tinha que acontecer
quando a Theresa-san não está aqui...
И надо же так,
напали, когда Терезии нет!