In the 1930s, popular children's comics such as "Norakuro", "Tanku Tankuro" and "The Adventures of Dankichi " which were serialized in "Shonen Club (Boys' club)" published by Kodansha Ltd. and other children's magazines became bestselling books.
1930年代には、講談社の『少年倶楽部』他の子供雑誌で連載された『のらくろ』『タンクタンクロー』『冒険ダン吉』などの子供向けの人気漫画が単行本化され、ベストセラーとなった。