I want to say it was ch. 100 or so when you talked about the effects of the dual system. It stated that rank wasn't the definitive scale of strength, a warrior who can beat a rank 8 earth dragon would struggle against and possibly be killed by a rank 5 wyvern who attacks from the sky. Having access to the job changing room is a huge boon to vida's races. Leveling and job promotion leads to higher attribute values and rank ups often involve a significant trigger along your evolution path. a mage would need comprehension of magic and mana, a swordsman would need comprehension of blade combat, it's ironic that most require the individual to put their life on the line in battle to gain the comprehension necessary to advance. Or in this case have a strong bond to a guider to gain advantages. I looked and saw Van has taken several guider jobs which all combined into a single path, he still has 1 guider job to take and one of the named jobs is based on a demon that whispers in people's ears and leads them astray, so that is probably an advanced guider job. Either way, Van is heading down a path pestilence, disease, death, war, and abominations, all the while trying his best to recreate the creature comforts of earth for his people. Truly a polarizing circumstance.