Shiroe and his group take Serara southwards.  On the way, they stop at the house of one of the "People of the Land".  The people of the land were originally only characters in the game, with no personalities or unique traits of their own, but as Naotsugu talks to them, something seems odd...  The party gradually realizes that the world isn't the same as it was when it was a game.
That's why he used that Teacher System thing.
Das erklärt, warum der Große
das Ausbildungssystem benutzt hat.
Por eso ese chico usaba 
lo del Sistema Maestro.
C’est pour ça que lui utilisait
le système de maître…
Ecco perché lui usava quel Sistema di Mentore.
É por isso que aquele cara usou
 o tal Sistema de Professor.
Вот почему тот братец-волшебник
играл в режиме наставника…