Honghuang: My Disciple Is the Future God of Justice

A nameless office drone transmigrates to the Primordial World and activates an Acting System, taking Yang Hongjian as his disciple. Using One-Punch Man as his model, he has his disciple throw a million punches at a remnant stele on Buzhou Mountain, comprehend the fist's intent, and open his Heavenly Eye. He bestows a weapon made from a flood dragon's inner core and gives him three warnings: don't get involved with dynasties, don't save Mount Hua, and don't trust Heaven!