The test
After giving them their mission, Zatiel sent a stream of information that depicted all the customs, behaviors, and rules of Abyss and Baator.
"Demon and devils have a hierarchy and caste system. No master wants ever to see their subordinates succeed and grow powerful enough to threaten their position. That is why Fiend Lords always use contracts and magic tools to bind their followers." Zatiel tone was serious since this part was crucial.
"Ezequiel, you will gain a Count title with ease. In Abyss, these can be obtained by simply killing another Demon Lord, but after that, you will have to sign a contract with a Demon Duke, where he will try to bind you one way or another. Unfortunately, you cannot avoid these pacts since if you don't have a powerful backing, another Rank 6 Demon will attack your city in less than a week."