Mitsuo Hashimoto (はしもと みつお or 橋本 光男, Hashimoto Mitsuo; born 5 November 1955 in Sayama, Saitama Prefecture, Japan) is a Japanese manga artist. After winning an honorable mention at the 11th Tezuka Awards in 1976 for his work Mīnya no Negai, he made his professional debut the following year in a special issue of Weekly Shōnen Jump with his work The Two Are Rivals (二人はライバル, Futari wa Raibaru). Since that time, he has published works in a variety of Shogakukan shōnen and seinen manga magazines. His definitive works include Tsukiji Uogashi Sandaime (art) and Itsumo Hōkago. Manga artist Hidenori Hara was his assistant for a time. Hashimoto was the assistant for Motoka Murakami for a time.
Source: “Mitsuo Hashimoto (manga artist)”, English Wikipedia (CC BY-SA 4.0), excerpt