Horizon is a very specialized institution to make the best heroes for the future. They contain some of the best equipment for nurturing the students. That includes artificial terrain created by artificial intelligence to make the students get used to certain difficult conditions.
Dungeon exploration is one such thing. After graduating from Horizon, all the major guilds will be on the lookout for potential candidates to serve in their ranks.
Not only guilds, but the union will also be recruiting new members to maintain stability and order. There will be many who will be eager to recruit the students once they graduate.
One thing that most guilds will do to get money is dungeon exploration. Most of the energy requirements of this world would come from the mana cores of monsters.
