Masashi Asaki(朝基まさしAsaki Masashi, born 2 March 1970 in Osaka, Japan) is a Japanese manga artist. He is best known as the artist for the series Psychometrer Eiji and Kunimitsu no Matsuri, both written by Tadashi Agi under the name Ando Yuma, both of which have been adapted as live-action dramas. His current series, which he both writes and draws, is Denshi no Hoshi. All three series are unusual for shōnen manga in dealing with political themes. With Agi, he received the 2003 Kodansha Manga Award for shōnen for Kunimitsu no Matsuri. He was an assistant to Tsukasa Ōshima.