Essence of Gluic - Wedgeworth A.G.

Bakalor, the demon of the Underworld, plans to resurface and rule the world. Nearing the final stages, he deceives land-dwelling leaders into waging war upon each other, making it easy for his victory. Ergrauth, the demon lord of the Del'Unday, leads his army of Altered Creatures to the final battle in order to seize the world before Bakalor claims it for himself. Learning of the pending war plans, Thorik attempts to prevent the demons from succeeding, while searching for a way to save his grandmother, Gluic. Unaware that he is being used as a pawn by those of great power, his desire to revive her inadvertently puts his life, and the lives of everyone he cares about in great danger. 

The Book Series Overview: Brothers of War were the twin heirs to the Mighty Dovenar Kingdom. Now weakened by the great civil war, which the twins unleashed upon the land, both brothers are nowhere to be found. Outside the kingdom's safe harbor and strong fortress walls, the Altered Creatures are prepared to conquer the kingdom in its leaderless and weakened state. The magical Alchemists have chosen sides with the Altered Creatures and against the few E'rudites who still honor the prior regime. Word of the vulnerable people has made it to the three demons that rule the Underworld, Land, and the Air, who have all decided to join the battle for their own supremacy. The future looks bleak for the civilized lands. Yet, there is one young hunter who believes he can still save the Kingdom. These are the tales of this individual and his friends whose very faith in their values challenges the vast domination of the naturally powerful. The land's destiny is in Thorik's hands, while his confidence in himself and conviction to his beliefs will define his own fate. Join Thorik on the ultimate journey to save the world from those who strive to control it.