Building the Harem Kingdom in the Zombie Apocalypse

( Note - just a normal zombie apocalypse and there will be no superpowers except MC's ) A young man got a mirror that could go through a parallel world but that parallel world was already infected with the zombie virus. It was the world of zombie. He will use his advantage to top at the both of worlds. He would create the maiden world in the apocalypse world for himself and the giant business empire in his original world. ------------ Author Note - This novel contains sensual content and mature content.