Volteer, the gardian of the heavens since days long and forgoten.He used to live alone in a far of kingdom of fellgrand, but 100 years later after the fall of Fellgrand he was joined by Cryril, a human hating demon dragon.Then one day Volteer found two young human children near the ruins of Fellgrand.One being a 0 generation dragon slayer, so he disidet to raise them with Cyril, much to his dismay.Cyril endet up training Kaitou the younger sipling.