Raising the Lord of All Demons [Western Fantasy]

Qi Jiu was born in the darkest depths of the world's filth. He was born to rule all demons. He knew nothing of human feelings or common sense, acting entirely on instinct. He was suddenly made the new Demon King, and his heaven-given power was enough to make others bow before him. But Qi Jiu began to wonder what he was living for. The heroes of the mortal world kept coming to slay him, the gods who descended to the world invariably cursed him, and even his own subordinates feared him. His presence was impossible to conceal, and going out meant certain death, but he couldn't die. His injured body healed in the blink of an eye, and his lost blood was replenished in an instant. As long as dark emotions existed in the world, he would live forever. He was tired of it all. He provoked every god, hoping they would destroy him. But things didn't seem to go as he expected. The gods received a troublesome task: A baby had been born in the filth, and he had to be taught before he grew up. The Thunder God was baffled by the decree: Why not kill him? The decree sighed with the weight of the ages: ...You can't kill him. After that The Light God, disguised as a teacher: "A Jiu, our natures are incompatible. I know you like your teacher, but drinking my blood will hurt you." The Storm God, disguised as an older brother: "Xiao Jiu, I may be able to go anywhere, but I just want to watch over you. Stop trying to make your big brother leave." The Earth God, disguised as a second older brother: "Xiao Jiu, why aren't you eating properly again? If you don't eat... I-I'll call your teacher!" The Thunder God, disguised as a younger brother: "Qi Jiu, it's wrong to bully the weak! You can't keep picking on me!!!" PS: 1. Faux Western fantasy, with a Western fantasy setting of my own qaq 2. He thinks everyone hates him, but actually everyone loves him. The gods go on adventures together in their daily lives, and raise the child (the protagonist) together. 3. He grows up from childhood. Theme: Pursuing the light