College student Iwatani Naofumi is reading a book titled "The Records of the Four Cardinal Weapons" in the library when he is suddenly summoned to another world and told he has to save the world as the Shield Hero, one of the Four Cardinal Heroes. And one morning, he finds all his money and equipment gone.
The fact that they cannot 
lie or betray their master.
حقيقة أنّهم لا يكذبون أو يخونون مولاهم
Weil sie ihren Meister weder
belügen noch verraten können.
Porque no mienten y son incapaces
de traicionar a su amo.
Porque no mienten y son incapaces
de traicionar a su amo.
Parce qu’ils ne peuvent ni mentir
ni trahir leur propriétaire.
Gli schiavi non possono tradire
 il proprio padrone, oppure mentirgli.
Eles não podem mentir
ou trair o seu mestre.
Потому что они никогда не лгут
и не в состоянии предать хозяина.