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.
That's exactly why they took your job.
لهذا انتزعوا منك عملك
Ecco perché ti hanno soffiato il lavoro.
É por isso que tomaram seu emprego.
Потому-то без работы и остался.