In ancient times, humans prayed to heaven in order to fight against the invasion of aliens. The gods sent many divine envoys to help the human race establish their own sects to practice martial arts to resist the alien race. In the end, the human race and the alien race signed a contract, and the world was finally at peace. The human race and the alien race have coexisted peacefully for hundreds of years. In modern times, in order to prevent the alien race from using magic to harm people, various non-governmental organizations have sprung up.
Purpose: Even different races can coexist peacefully