There are two opposite sides in this world - ice and fire, black and white, war and peace, beauty and ugliness, justice and evil, illusion and reality... Countless opposites make up this world.
Things that seem to be contradictory coexist with each other. Where there is light, there must be darkness. Just as there is kindness in the human heart, there must also be a dark side that represents the devil... And human beings continue to exist in these contradictions.