After the End of the World, I Rely on Zombies to Support the Goddess

An evolver who kills zombies and collects supplies in the end of the world. One day, after killing a zombie that looks exactly like him, he obtains a parallel time and space double-travel system from the zombie, and then uses the double-travel system to recruit beautiful women, obtain supplies, and protect the two worlds in the end of the world and the parallel time and space world.