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.
We're just poor nobles who stand no 
chance against anyone ranked higher.
نحن مجرّد نبلاء فقراء لا فرصة لهم
Wir sind armer Landadel, der sich nicht
gegen höhere Ränge wehren kann.
Nobles pobretones e indefensos
ante nobles superiores.
Nobles pobretones e indefensos
ante nobles superiores.
Cela dit, en haut de la pyramide,
il y a des rangs supérieurs.
Siamo nobili poveri che non hanno speranze
E nobres pobres não desobedecem
Мы бедные дворяне, бессильные 
перед высшим чином.