Noir is the 3rd son of a poor noble and his job position is taken away by a more powerful noble. He also sadly lacks enough skills to attend the Hero Academy. He tries to find a way to be able to use his skill [Great Sage] better and stumbles across a hidden dungeon.
Well, whatever. 
So you wanna get stronger, right?
حسناً، لا يهمّ. تريد أن تصبح أقوى إذاً، صحيح؟
Ach, schade. Aber du bist hier,
um stärker zu werden, oder?
Peu importe.
Tu veux être puissant, c’est ça ?
Beh, pazienza. Quindi vuoi diventare più forte, giusto?
Bom, fazer o quê. Em todo caso,
você quer ficar forte, sim?
Ну и ладно. 
Так ты хочешь стать сильнее?