The Waste Master's Nüwa Pupil

Kael Riven, who massacred the Celestial Court to save his senior sister, crippled his Golden Core. He hides his identity, pretending to be useless at the Apocalypse Sect. Luna Chen, the reincarnated Nüwa, forcibly takes him as her master. This overprotective master is forced to overpower foes. He and his pupil farm and cultivate immortality, but get caught up in a conspiracy by the Asura Society. He unlocks his sealed cultivation, slays the Black Emperor, and retires with his pupil.