リボンの騎士 [Ribbon no Kishi]

A pioneering shōjo manga from 1954–1958, Ribbon no Kishi (published by Kōdansha) follows the adventures of a princess who must conceal her true gender to inherit the throne, blending sword-and-sorcery action with themes of identity and destiny. Created by Osamu Tezuka, this three-issue series is widely regarded as a foundational work of the shōjo genre, introducing a female protagonist who defies traditional gender roles in a fantastical medieval setting. Its influence on later magical-girl and cross-dressing narratives is immense, making it a landmark in the history of Japanese comics.