Keiko Takemiya
is a Japanese science fiction manga series by Keiko Takemiya. It was originally serialized in Asahi Sonorama's "Gekkan Manga Shōnen" magazine, between January 1977 and May 1980. In 1978, it won the first Seiun Award for manga, and in 1980 also won the Shogakukan Manga Award for shōnen/shōjo manga (along with Takemiya's "Kaze to Ki no Uta").