"Space Boys Rocket-kun'' is a manga that appears in the most famous episode of "Manga-do'', which is the first book version of a phantom work that also appeared in Manga-do. This is a memorable series by Fujiko Fujio, who moved to Tokyo and became a popular manga artist, but was so busy that he dropped his manuscript.This is a memorable series that marked his comeback in Kodansha's ``Bokura.'' It is a work that Fujiko Fujio A has a strong attachment to, but it was never published as a book because most of the manuscript was lost.