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. (Source: Ichijinsha, translated) 1. Saiteigi Suru Kibou (再定義する希望) 2. Tsugihagi no Kibou wo Idaite (継ぎ接ぎの希望を抱いて) 3. Tomoshibi no Kikaitachi (灯火の機械たち) 4. Kimi to Sekai no Owari wo Tazunete (きみと世界の終りを訪ねて)