In this world everyone is born with a superpower. It can manifest as a glowing string that you can use to fight with other people. They are referred to as your energy. Everyone has a unique energy and it's color corresponds to your power, if you get in an energy fight whoever has the weaker power will fall unconscious. Using your powers and summoning your energy are two different actions and if someone used their energy against yours will automatically be drawn out in order to defend you. There are heroes, villains and civilians. Establish which you are and what your power is.