In 2124, Christopher, who investigates Mars, discovers an unknown Earth Mars repatriation ship. It's been 3 years since the news was unknown. Christopher steps into a repatriation ship to see the passengers and crew left behind on Mars. There, he meets a ghost girl, Cyane, who is a passenger. Cyane, a lonely stone tape on Mars, tries to play with Christopher ...

[Source: animenotane]