Naoko Takeuchi redeveloped "Sailor Moon" from her 1991 manga serial "", which was first published on August 20, 1991, and featured Sailor Venus as the main protagonist. Takeuchi wanted to create a story with a theme about girls in outer space. While discussing with her editor Fumio Osano, he suggested the addition of Sailor fuku. When "Codename: Sailor V" was proposed for adaptation into an anime by Toei Animation, Takeuchi redeveloped the concept so Sailor Venus became a member of a team. The resulting manga series became a fusion of the popular magical girl genre and the "Super Sentai" series, of which Takeuchi was a fan. Recurring motifs include astronomy, astrology, gemology, Greek and Roman mythology, Japanese elemental themes, teen fashions, and schoolgirl antics.