The kingdom of landsol have same IG as human world, however, there are lot of different with the human world due to the social characteristic of Astraea, the IG also have their special characteristic:
aristocrat:
the aristocrat of landsol is one of the dominant power of the kingdom, the most estate of landsol is controlled by these IG, the seven oligarchy were the representative of this IG, during tribe era, the landsol was merged into a chiefdom and the seven tribe chiefs became aristocrats, the time pass by , some of the tribe merged into chiefdom, some people get rich, the "seven oligarchy" have more and more follower, but only seven family and it`s follower which found the kingdom could find stable position on the court
the adventurer:
the adventurer is petite bourgeoisie IG representative, is also the dominant power of landsol, control the most bureaucrat and guild position , helping emperor to control the state and bring the wealth to the city , during the classical age , the adventurer guild is formed in order to make the trade route is safe and hunting the monster for the market goods, in the middle ages, the adventurer expand to bureaucracy and other guild , the emperor begin to form the more complex government to collect taxes and deal with the metropolis affairs and business with other tribes, they usually loyal to the monarchy and heavily support jingoism ideology