Magic circuits are the basis of our powers. Despite the name, magic circuits allow the user to manifest true, world-altering phenomenon, known collectively as powers/abilities. No one knows how we came to have them but many theorize that it was the result of human evolution in the face of a natural disaster known as demons. Demons have been present for centuries; the furthest record humankind has of their existence was from Sun, the First Hero. That was over 100 years ago. 

Magic circuits enable us to have a variety of powers within the population. Some are hereditary. Some are completely randomized. Some have several quirks. Some have none at all. Powerful abilities have manifested in individuals whose lineage has powerful circuits. It has been recommended that those with powerful circuits continue to maintain and produce heroes for future generations. On the other hand, abilities that are far above anyone else’s have appeared in those whose lineage is completely ordinary. Regardless, research has proven that any single human may only have one ability; no individual has been known to possess two complete abilities. This is due to the “capacity” that a circuit can hold. Circuits themselves can vary to a great degree, even humans with no powers will still have a functioning circuit. Once an individual uses up the total capacity of their circuit, they will be unable to use their powers until the circuit is recharged. Luckily, eating and sleeping to recharge the body