The series follows a young girl named Rakka, a newly arrived haibane (an angelic-looking being), and other characters in the city of Glie (guri), a walled city with one entrance where no one is allowed to leave. (See http://en.wikipedia.org/wiki/Haibane_Renmei for more.) It also contains a side story written after the end of the anime. The story shows the relationships of Reki, Nemu and Hyouko after the departure of Kuramori. The colour illustrations are supposedly by Reki. One is a scenery in her dream and the other is the portrait of Kuramori.More...