Chi

Chi (氣, Life Force) (known as fighting power or simply energy) is metaphysical energy that flows throughout the body, it is a tangible energy inside every living being. Chi's major focus being in the center of the body and spans out through a network of chi paths throughout the body. By drawing it out, a person is able to manipulate it and use it for performances outside the body.

Overview
Chi is the life energy that dwells inside every living being connecting them to each other, their surroundings and the universe as a whole. Different parts of the human body contain concentrated clusters of chi that run along a network of chi paths that are directly in line with ones nervous system.

With the mastery of Chi, one is able to draw it out as physical energy in order to manipulate it for uses outsie the body such as different techniques. When a user gathers chi and then force it out of the body by "powering up", the user is able to is able to gain enhanced strength, speed, endurance, and can increase the power of their attacks to inflict greater damage to opponents. It also can give the user a surge of energy that allows them to unlock abilities they've never known, like the ability to optimize special martial arts.

When outside the body, Chi takes the form of a visable aura of different colors, depending on the person. The most rare and advanced technique is the ability to manipulate chi through elemental arts. If one is "chosen" they are able to utilize elemental chi which when exerted, it comes out in the form of one of four elements: Fire, Wind, Water or Earth. Each are manipulated through certain martial art styles which are reminiscent of the qualities of the element itself.