I returned from hell, after hundreds of years to save Humanity!...
This mangas stopped being interesting after chapter 50 honestly. The premise had so much potential, world was interesting and MC personality was likeable, just the right balance of lucky, righteous and dumb muscles. Could have easily been GOATed if the writers had made effort into studying actual martial arts (and not the hand-wavy beams of light that they call martial arts) and fleshed out how the abyss and earth affected each other. Such a shame, dropped at 134.