I don't understand this change job thing in this manga. Is it a random class in every change job unlocks? If so, then it's like looping back to lvl 1 after picking a class, then grind again to lvl 100 just to trigger the change job, and if there is still no warrior, back to grind to reach lvl 100 again... Man, if this is the real gameplay system for a game, I would rather play Roblox than waste my time grinding just to get the warrior class lol.