Man Man was the descendant of a God.
Back in the prehistorical era, the most original, first generation of God only had spirits, without human bodies. Back then, Gods could be a sphere of light condensed from the corresponding natural power, or a tree, a mountain, a river…
Time flew, and the natural law became clearer and clearer from a chaotic state. Natural power stabilized, and the God-kind started to have fleshy bodies. They then began building families and clans like the humankind, slowly becoming what they are today.
Descendants of Gods and descendants of human beings shared the same body structure. The only difference between them was that, to the God-king, the physical body and soul were a unity; if the body of a God were harmed, his or her soul would be harmed as well. If the body were destroyed, the soul would perish along with it.