A brief description of the manhua Daddy From Hell:
Chu Feng was the killer. When he failed another mission and was cornered, he jumped off a cliff. After he died, he went to hell. He spent 500 years there and became the most powerful creature in hell nicknamed the “Demon King”.
For all these 500 years he only wanted to return to Earth and meet his beloved and destroy the Pearl of Hell, he goes to the world of the living. But on Earth, instead of the other half, there’s a little girl who’s been waiting for him all this time…