Just when the mainland was facing a life-and-death crisis, a huge gap suddenly opened in the dark sky, and a figure surrounded by light descended from the sky and saved everything. He is the true god believed in by the human world today, Saint Gutin Os. Before leaving, Saint Gutin gave part of his power to all living beings. At that moment, the dense golden light spots above his head was the most shocking scene in the lives of people at that time. The true god named Saint Gutin stood there, looking down at the earth in the distance, and he said: "From now on, it is up to you to protect this place." Everyone at the time remembered this sentence. After saying these words, Saint Gutin disappeared. Later, after tens of thousands of years of evolution and the reproduction of creatures from generation to generation, this power gradually merged into the bloodline, forming what is now the Holy Vein - the Sacred Bloodline. The inheritance of the Holy Vein allows generations of people to have such a thing as magic power. When the total value of magic power reaches a certain level, the owner can use magic. And these people who can release magic are the so-called Magic Knights.