21 Emon (21エモン, Nijūichi emon) is a Japanese manga by Fujiko F. Fujio published from 1968 to 1969 in the magazine Weekly Shōnen Sunday of Shogakukan. The manga was given an anime adaptation by Studio Shin-Ei Animation in 1991. Two animated films were made: 21 Emon: Uchuu e Irasshai! and 21 Emon: To Space! The Barefoot Princess. The official English name is 21 Emon: The 21st Century Kid.
In 2018, a young boy named 21 Emon dreams of becoming a space pilot and exploring space in general. He is the heir to a long line of hotel owners, which dates back to the founder of during the Tokugawa shogunate. Since the planet Earth has become a tourist spot within space, 21 Emon has to help out his family's business or they'll go bankrupt.