Astro Boy, known in Japan by its original name Mighty Atom (Japanese: 鉄腕アトム Hepburn: Tetsuwan Atomu), is a Japanese manga series written and illustrated by Osamu Tezuka. It was serialized in Kobunsha's Shōnen from 1952 to 1968. The 112 chapters were collected into 23 tankōbon volumes by Akita Shoten. English volumes were not available until 2002, when the manga was licensed by Dark Horse. The story follows Astro Boy, an android with human emotions who is created by Umataro Tenma after the death of his son. Eventually, Astro is sold to a robot circus run by Hamegg, but is saved from his servitude by Professor Ochanomizu. Astro becomes a surrogate son to Ochanomizu who creates a robotic family for Astro and helps him to live a normal life like an average human boy, while accompanying him on adventures.