Ambassador Atom

Ambassador Atom (アトム大使) is a manga short series written by Osamu Tezuka. It was originally serialized in Kobunsha's Shōnen (Kobunsha magazine) magazine from 1951 to 1952. The series is mostly noted for introducing the world-famous character Astro Boy. The series would be released as Chapter 0 in the original Astro Boy  tankōbon  volumes published by Kodansha.