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 how's one more on 
your side gonna help you?
وبماذا سيخدمكم إضافة شخص واحد إلى صفّكم؟
Was hilft euch einer mehr?
¿Y crees que este niño los va a ayudar?
¿Y crees que este niño os va a ayudar?
C’est pas un môme
qui va changer la donne.
E come dovrebbe aiutarvi una persona sola?
E que diferença faz ter um a mais?
Ну и как вам один человек-то поможет?