Once upon a time, there existed a giant tree that was the source of mana. A war, however, caused this tree to wither away, and a hero's life was sacrificed in order to take its place. Grieving over the loss,...

Due to natural disasters caused by the world regeneration which took place two years ago. Two researchers, Richter and Aster, are trying to find the spirit Ratatosk who seems to be the only one able of resto...