He Got Possessed By A Overpowered Dragon Soul And Takes Revenge On The Demons

A Dragon Knight, Davion, who hunts and slays dragons to make the world a safer place. In a battle between demons and the dragon race of Eldwurm, the dragon Slyrak merges his soul with Davion. Along with the sun princess Mirana, Davion pursues a journey to stop the demon Terrorblade, who wants to kill all dragons and collect their souls.