Demon respects life, Master, don’t cry, disciple is wrong

In the seventh year after becoming the Demon Lord, he committed suicide. He was originally the leader among thousands of people and enjoyed endless power, but there was no one behind him. None of his friends or relatives survived, and even the person he hated the most died in his arms. Demon Lord Bei Yi kills his relatives, hunts down the Immortal Sect, and dominates the world, ruling the world for eternity. Everyone in the world knows that he is ruthless and full of evil. He has the face of a human and the heart of a beast, and the heart of a wolf and the lungs of a dog. He is unforgivable and deserves to be sent to the eighteenth level of hell! He fulfilled everyone's wish and was trapped in the underworld for six hundred years, tortured every day. The day of reincarnation finally came, but he never imagined that he would be reborn and become the disciple of the person he hated the most. ——In the beginning, the reborn mad dog was bent on killing his master, Han Ziyu, and in this life, he will be...