Talk:Slave/@comment-2600:1702:11C0:E460:D51A:9491:45F7:FCC5-20181003015320/@comment-5104557-20200816144135

I imagine the reason for having a "slave" as a "job class" is to denote that the level-up bonuses are even worse than for a "general" (generic commoner). It's there to denote a penalty on the character's growth as a person.