Published in 1958 (Showa 33), this is a children's comic "Hogaraka Mari-chan" distributed as a supplement to the September issue of Kodansha's "Tanoshii Sanensei" (Fun Third Grader). The author is Rentaro Itai, a children's manga artist from the Showa era. This is a highly valuable supplementary comic, symbolizing the post-war Japanese grade magazine culture. Supplements of grade magazines at the time were not intended for preservation and were often discarded after reading. Therefore, the number of extant copies is small, and it has been gaining recognition in recent years as a Showa-era paper ephemera collection. This is an original copy that preserves the 1950s children's publishing culture, featuring the unique texture of coarse paper, blue single-color printing, and simple binding with staples. 【Condition】 ・All pages present ・Significant yellowing ・Corner damage, folds, and tears ・Binding deterioration ・Condition appropriate for its age ※It is in relatively good condition for a printed matter from approximately 70 years ago. Please check the images for details. Recommended as Showa retro material, children's cultural history material, and a vintage manga collection. Price negotiations should be made via the "Price Reduction Request" button, not in the comments. Only reasonable offers will be considered. This is an original Japanese children's comic supplement published in 1958 (Showa era). Highly collectible vintage manga ephemera. Search words: Showa retro, grade magazine supplement, Tanoshii Sanensei, Kodansha, children's manga, Showa manga, vintage, old book, vintage manga, Showa paper ephemera