Ōgidni

Ōgidni is the third book in the Mij's Testament trilogy.  Fifteen-year-old Fil and his friends are a species called kin living peacefully on their planet Ōgidni before the humans arrive and turn their world upside down.  Kin are an ancient species, yet they are neither technologically advanced nor primitive.  The humans attempt to conquer each continent on their planet one by one while one traitor among them secretly tries to stop them.  Fil befriends and helps the humans, unaware of their ill intentions.  Who will win:  the human fighting for the kin, or the kin fighting for the humans?