Legends tell the story of Sacred Guardians called Shalen who tried to protect the lands from 4 beasts from another world by using the power of fire, metal, water, wood and earth. However, the beasts were too powerful even for them until a new power was found - the wind spell. The spirits of the beasts were sealed and peace was restored in the human world. Ever-since, people born with a special mark on their hand beco...