Our Lives After the Apocalypse is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The human era has ended. This world is one where society has already collapsed. While people have slowly accepted the fate of their race, someone has started their journey: a girl and a dog. This tale, while a little lonely, is also filled with warmth. A slow life at the end of the world.