An abandoned Dragon's egg in a cave in the middle of the mountain, alone without the protection of its mother. Accompanied only by the moonlight and the warm energy of both parents who protect and provide life energy so that the little dragon continues to live while it is in the egg.

Found when his life began to become critical by an Onmyoji while he was training in the mountain, the egg was taken home and given warmth from the energy given by the Onmyoji until it hatched.

Warm, that's a feeling he hasn't felt for a long time since he was abandoned for so many years, he can't even remember how warm his parents felt before they died as a result of being hunted by the Onmyoji. His memory is locked by the power of his parents, so the little dragon will not remember the memory of his parents.

Haru, which means "child of spring", the name given by the man who saved him from the brink of death, his beloved father, Amanogawa Seishirou.