The first theatrical Bonobono movie.

Episode 13 of Yomigaeru Sora: Rescue Wings, released as a DVD special. Takes place before the events in the series.

The planet Libertia was once known as “the planet of death”, until humanity built three giant mirrors and created what seemed like an ideal land. It is on this planet that Professor Grace and his granddaughter Alcia live peacefully… until their home is attacked by Guild soldiers looking for the professor and for Legaciam – a special Armor that can resist extreme heat, allowing it to go to areas where humans would not survive normally. Alcia, who was at the time piloting Legaciam in order to help her grandfather with the testing, manages to get away… barely. But the Guild is determined to get Legaciam by any means necessary…

This is the autobiographic tale of Kobayashi Chitose, a young Japanese girl growing up in a Japanese-occupied North Korea. As World War II progresses, Chitose begins to realize that her family will not be able to escape the effects of the conflict. From the simple disappointment of not being able to get the type of backpack she wants for school, to her father's recruitment as a soldier, the war begins to impact her life in a very real manner. But the end of the war does not mean the end of hardship for her. The Koreans, fed up with years of Japanese rule and persecution, have joined forces with a Chinese-backed communist government and are systematically making life a living horror for the Japanese left in North Korea. Fearing reprisal since he was a Japanese veteran, Chitose's father risks everything to get his family out of the north and to the US-occupied area south of the 38th parallel.