Yggdrasil

Once upon a time, there existed a giant tree that was the source of all mana A war, however, caused this tree to wither away, and a hero's life was sacrificed in order to take it's place The goddess left the angels with this edict: "You must wake me, for should I sleep, the world shall be destroyed" The angels bore the Chosen One, who headed towards the tower that reached unto the heavens And that marked the beginning of the regeneration of the world​