Before the birth of time, there existed the world of light "Etheria" and the world of darkness "Morg". The two realms were originally in balance like the two poles of Yin and Yang, until the Lord of the Dark Realm "Marges" tore the void apart and injected the shadow energy into the heart of Ethria - the Tree of Life "Yggdrasil". The polluted sap condenses into the black crystal "Tas". The holder will gain the ability to travel between two realms, but the shadow will gradually erode the mind.
