Weekly Shonen Jump issue 38, 1971 — 週刊少年ジャンプ, the weekly manga anthology published by Shueisha — came out on September 13, 1971 and carries 12 series, with Koya no Shonen Isamu on the cover. Inside: Koya no Shonen Isamu, The Gutsy Frog (Dokonjou Gaeru), Toilet Hakase (Professor Toilet), Otoko Ippiki Gaki Daishou, Samurai Giants and Bara no Sakamichi, and more. This issue carries the first chapter of Koya no Shonen Isamu.