All That Has Flown Beyond by Marina Vivancos

Kaiyo’s bloodline has been part of the Garrow pack for generations. He has been destined to be shaman, to anchor the werewolves to the land, and lend aid with the force of his Ousía. When Kaiyo is fourteen, however, an attacking group kills all of the adults in the pack, leaving young Ahmik, only fifteen, as leader.

Kaiyo grows increasingly reckless in his desperation to defend his pack, to finally grow into his shaman powers, and to protect Ahmik: the boy he loves. In the end, Kaiyo loses his pack anyway… Read more.