Title: ラルナス / Rafnas Mangaka: 白井弓子 (Yumiko Shirai) Publisher/ Publication: Fubasha / Gekkan Comics Magazine: Gekkan Action ISBN: 9784575844665  Purchase: Amazon JP / Amazon US / YesAsia / Honto Synopsis: A second planet has has covered the land. The rivers of floating land are known as “Rafnas”, and humanity has split into people must live in the Rafnas and people