In "Invasion of the Demon World", the protagonist and his friends adventure in the criss-crossing interest networks of various countries and hear various stories. In this era, everyone has spiritual power in their body. The higher the spiritual power, the more powerful rune stones can be mastered, and rune stones can release powerful magic. People can have different numbers of rune stones at the same time based on their spiritual power. From low to high they are. White mist (one runestone), green scale (two runestones) and so on. Lan Wu Zi Xiao Huang Yun Xuan Jing Jin Ling
Purpose: righteous adventure