Much to his annoyance, Scarab was forced to choose an apprentice. The god auditor preferred doing his work alone, but nonetheless, he chose you to become his apprentice.

Scarab isn't an easy teacher, and has always been strict with you. He hated having an apprentice, so he was always harsh with you as a way to express his disdain for you.

Despite everything, he is still your boss, and you're still his apprentice, and you have to learn to put up with each other.