Golden Kingdom. Mamoru and all ten of the reunited Guardians combine their powers, enabling Usagi to transform into Eternal Sailor Moon and defeat Dead Moon's leader, Queen Nehelenia. In the final arc the Sailor Starlights from the Kinmoku system, their ruler Princess Kakyuu, and the mysterious little girl Chibi-Chibi join Usagi in her fight against Shadow Galactica, a group of both corrupted and false Sailor Guardians and led by Sailor Galaxia, who have been rampaging across the galaxy and killing other Sailor Guardians to steal their Star Seeds, Sailor Crystals—the essence of their lives. After Mamoru and all of the main Solar System Guardians are killed by Shadow Galactica, Usagi travels to the Galaxy Cauldron, the birthplace of all Star Seeds of the Milky Way, in an attempt to revive her loved ones and to confront Chaos, the source of all strife in the galaxy. Production Creation of Sailor Moon Naoko Takeuchi redeveloped Sailor Moon from her 1991 manga serial Codename: Sailor V, 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, Greco-Roman mythology, Japanese elemental themes, teen fashions, and schoolgirl antics. Takeuchi said discussions with Kodansha originally envisaged a single story arc; the storyline was developed in meetings a year before serialization began. After completing the arc, Toei and Kodansha asked Takeuchi to continue the series. She wrote four more story arcs, which were often published simultaneously with the five corresponding seasons of the anime adaptation. The anime ran one or two months behind the manga. As a result, the anime follows the storyline of the manga fairly closely, although there are deviations. Takeuchi later said because Toei's production staff were mostly male, she feels the anime has "a slight male perspective." Takeuchi later said she planned to kill off the protagonists, but Osano rejected the notion and said, "[Sailor Moon] is a shōjo manga!" When the