A devastating disaster sets back the progress of a martian colonization project, and the sparsely populated world seems to be heading for ruin. A lone postal worker travels the martian deserts, delivering people hope…

In the far future where space travel has become the norm, Marika Kato is a high school girl living a rather ordinary life as a member of the space yacht club and a part-time job at a high-class retro café. One day, Marika learns of her recently deceased