>>20711174
http://en.wikipedia.org/wiki/Yokohama_Kaidashi_Kik%C5%8D
>Yokohama Kaidashi Kikō is set in a peaceful, post-cataclysmic world where mankind is in decline after an environmental disaster. Exactly what happened is never explained, but sea levels have risen significantly, inundating coastal cities such as Yokohama, Mount Fuji erupted in living memory, and climate change has occurred. With the seasons being less pronounced, the winters are milder and the summer isn't scorching anymore. The reduced human population has reverted to a simpler life, and the reader is told this is the twilight of the human age. One scene depicts an anti-aircraft missile being used in a firework display. Instead of raging against their fate, humans are quietly accepting.[5][6]
>Alpha Hatsuseno is an android ("robot person") who runs an out-of-the-way coffee shop, Café Alpha, on the lonely coast of the Miura Peninsula of Japan, while her human "owner" is on a trip of indefinite length.[7] Though she spends much of her time alone, Alpha is cheerful, gregarious, and—unlike the slowly declining humans—immortal.[6]