The Adventurer's Guild is an organisation that accepts request sfrom other organizations and people for adventurers to complete.
Adventurers is ranked based on their individual power based on their level.
Adventurers classed from E to SSS.the highest level achievable is 65,535 if a person surpasses that level the guild card will display OVER
the guild card and levels work on a premise of a pact which is made between the world and another party. the idea was that once that was established the persons power would increase at a great speed as time went on. root further stated was that a big part of him/her creating the guild is to try help keep an equilibrium between the races.