Doomsday Moving Castle

Li, who had been struggling in pain for a year in the apocalypse, wanted to return to the place a week before the apocalypse broke out after his death. This time I am reborn, I want to get the best superpowers, take revenge on those who betrayed me, no longer bear those heavy moral burdens, drive a RV freely and freely in the apocalypse, and gradually evolve a small RV into an unparalleled moving castle of the apocalypse! (It tends to build a post-disaster world like "Fallout", where the remaining government forces, new forces, gang forces, religious forces and other complex humans and mutants that have emerged due to supernatural powers and the apocalypse are intertwined in an orderly manner. The protagonist finally becomes the only paradise in the wasteland through a RV that can continuously evolve.)