Anaerfell by Joshua Robertson

Drast, cunning but reckless, is on the hunt for admiration. Tyran, calculating but tactless, is in search of affection. Bound by a friendship thicker than blood, the two brothers have been hardened by their father’s ambitions. Drast and Tyran are forced to set aside their own hopes and dreams during their struggle to fulfill their father’s desire for immortality. The two will face skin-switchers and dragons, ultimately leading to a final clash with Wolos, God of the Dead.