Global Class Change: The Hidden Class, Judge

Chen Hao's soul enters a post-apocalyptic world where everyone changes class, and he inhabits the body of an experimental subject. He grows stronger step by step through the Heavenly Ladder, life-and-death trials, Starfield Trials, and Firmament Trials, eventually becoming the highest judge. Then he joins the full-scale, life-or-death battle against the wicked realm beyond the heavens.