Arc academy is the name of the school our protagonist and his friends go to. It is one of the best academies in the entire world for learning how to control your affinity. The school is more focused on affinities rather than actual education. Students form their own groups which are ranked according to the number of successes the group has. A group can have as few as 5 people such as Aizens group which was created by Asahi only has about eight people. If a group has more than seven people it is given a mansion of sorts that is called a base, a base can be upgraded with money from missions the people in the group complete. There are no restrictions on the number or type of people a group can have. Arc academy is so massive that it has its own mall sports centre and various other facilities. When a student joins they are given their own super luxurious flat in a towering skyscraper, although a lot of students decide to stay in their base.