Daddy from hell

Chu Feng worked as an Assassin, but during one of his missions, he failed and was chased to a cliff. In an attempt to escape, he jumped off and died, only to find himself in the underworld. He spent 500 years there and eventually became the strongest demon, known as the Demon King. Throughout his time in the underworld, his only wish was to return to earth and reunite with his lover. He destroyed the pearl of death to make this possible, but upon his return, he discovered a young girl who had been waiting for him.