Strange Spiritual Realm

Humans, dragons, demons, and the mysterious third race. The male protagonist has no cheats, it is not a pure novel, and it has a larger world view. I hope you can continue reading patiently, and I will work hard to fill the gaps left. The male protagonist was abandoned in a foreign country for some reason. He was taken in by a teacher and awakened to magic. Since his family has been parasitized by demons for generations, he inevitably became the host of demons. He stepped from an ordinary boy to the top and became the top magician in mankind. He experienced the experience of the female protagonist who is a dragon. After the emotional changes, the relationship was finally confirmed and she resisted the worldly view. Later, with her courage and belief, the heroine was selected and fused with the soul fragments left in the world by Nidhogg, the ancestor of the dragon clan. The heroine had the ability to activate weapons refined from Nidhogg's body parts, and created their own legend with the hero.