Planetarian: The Reverie of a Little Planet

Planetarian: The Reverie of a Little Planet is a Japanese post-apocalyptic visual novel developed by Key and suitable for all ages. The story revolves around a middle-aged man who comes across a malfunctioning robot in a dead city. The man, simply called "the Junker", stays with this robot for a while and tries to repair the projector of the planetarium where the story is set.