In a world in the future where magic is still a part of everyday life, 17-year-old Hitomi Tsukishiro, a descendant of a family of mages, lost the ability to see colors when young and has grown up into a girl devoid of emotion. Concerned for her future, Hitomi's grandmother Kohaku decides to send her back through time to the year 2018, where she discovers a world where vivid colors spring forth.