Lion Books, is a 1950s Japanese manga series by Osamu Tezuka, the same company published "Lion Books II" in "Weekly Shōnen Jump", a weekly "shōnen" manga anthology published in Japan by which organization, under the "Jump" line of magazines?
Weekly Shōnen Jump Weekly Shōnen Jump (Japanese: 週刊少年ジャンプ , Hepburn: Shūkan Shōnen Janpu , stylized in English as "WEEKLY JUMP") is a weekly "shōnen" manga anthology published in Japan by Shueisha under the "Jump" line of magazines. It is the best-selling manga magazine, as well as one of the longest-running; the first issue was released with a cover date of August 1, 1968. The manga series within the magazine target young male readers and tend to consist of a large number of action scenes and a fair amount of comedy. The chapters of series that run in "Weekly Shōnen Jump" are collected and published in "tankōbon" volumes under the "Jump Comics" imprint every two to three months.
Ninku Ninku (忍空 , Ninkū ) is a Japanese manga series written and illustrated by Kōji Kiriyama. The original manga spanned nine "tankōbon" volumes and was serialized in Shueisha's "Weekly Shōnen Jump" manga magazine between 1993 and 1995. A second manga titled "Ninku 2nd Stage: Stories of Etonins" (忍空 SECOND STAGE −干支忍編− ) ran from 2005 to 2011 in the "seinen" magazine "Ultra Jump".