Planetarian: The Reverie of a Little Planet (2016)

Hoshino Yumemi is the robot working at a shopping mall. She was created by a group of scientists to advertise the planetarium she was working in, as well as to help customers. One day, however, the humanity shows its true color and the world we know no longer exists. Humans still exist, though, but it will take you awhile to find even one. Anyways, the poor robot still fulfills her duties, but does it rarely, since electricity is quite a big rarity. However, this dead city still has many valuables and because of that, The Junker chooses this city. Running away from the robots that still protect the city, he finds himself in the planetarium, where Hoshino Yumemi works. At first, he regards her as a threat, but after some time he reconsiders his attitude towards her and even stays to help her repair the projector.