Jūzō Yamasaki (やまさき十三 or 山崎十三, Yamasaki Jūzō; born June 19, 1941 in Miyakonojō, Miyazaki Prefecture) is a Japanese manga artist. His best known work is Tsuribaka Nisshi with art by Kenichi Kitami. Yamasaki originally wrote screenplays for Toei, but was laid off and decided to pursue a career in manga instead. He has won both the Shogakukan and Kodansha Manga Award for Tsuri Baka Nikki and Okashina Futari respectively.
Source: “Jūzō Yamasaki”, English Wikipedia (CC BY-SA 4.0), excerpt