In the fifth year after the catastrophe broke out, the Doomsday War broke out, the abyss demons invaded, the world was dead, and civilization was extinct. Chen Yu returned to the beginning of the Doomsday, and both parents were mutated and comatose...... Five years in the Doomsday, countless tragic experiences, endless regretsRegret. Chen Yu wants to change all of this! Whether it is the disaster of the end of the world, the powerhouse of civilization, or the abyssal demon of Khorne—kill!