Cain must subjugate some bandits in order to advance to rank A in the guild. His handling of the quest makes his senior adventurers worry that he doesn't fit in at the academy, so they come up with a plan to help.
And it says in this letter that 
the first king trained you?
ومكتوب في هذه الرّسالة بأنّ
الملك الأوّل درّبك؟
In diesem Brief steht, dass der
erste König dich trainiert hat?
En esta carta dice
que te entrenó el primer rey.
En esta carta pone
que te entrenó el primer rey.
De plus, la lettre précise
que le premier roi t’a entraîné.
Questa lettera dice anche che ti ha addestrato.
E na carta estava escrito que ele
te treinou. É isso mesmo?
А ещё тут написано, 
что первый король тебя тренировал.