What Should I Do When Zombies Roaming Around After I Come Back From Another World? I Want to Make a Base to Survive Rather Than Fighting Zombies

When a young man came back from another world he was trapped on a mountain, zombies were terrorizing the world. For the meantime, he could survive using the collected supplies, but the young man thought that he needed to make a base. With a succubus from another world, they travelled to find a place to live with other survivor who joined them. The aim was to be self sufficient even in a world filled with zombies.