Doomsday with My Dog, Vol. 1 (manga)
A single teenage girl journeys through the crumbling ruins of civilization,a concrete jungle that has outlived mankind. However, just because she's thelast woman on earth doesn't mean she's alone. She's accompanied by her dog Haru,an adorable and quick-witted shiba inu who will gladly lend his wisdom to hishuman companion.
With such a pleasant conversation partner to keep thepost-apocalyptic doldrums at bay, the end of the world might not be so bad afterall!