Kimi to Sekai no Owari wo Tazunete

Note: Volume ver consists of two oneshots previously released by the author and two sequel chapters, totalling four chapters. Hundreds of years have passed since a weather control satellite went haywire and started a war that destroyed the human race. After waking up from a long sleep, the android Laliberta met a clone girl named Speranza. Since Speranza could not live in the open air, the two interact with each other through a window... This is a series of stories depicting the thoughts and feelings of the girls surrounding the apocalypse.