During the 1950s, Osamu Tezuka was already popular having written "Kimba the White Lion" (1950) and "Astro Boy" (1952). In late 1952, a "Shōjo Club"s editor asked Tezuka if he would be able to create a work similar to his previous ones but aimed toward girls. Tezuka agreed and his first idea was to transpose the all-female musical theater group Takarazuka Revue into manga. Takarazuka's "aesthetic is on full display in "Princess Knight"", argued Natsu Onoda Power, in her book "God of Comics".