Masatoshi Mashima (真島 昌利, Mashima Masatoshi; born February 20, 1962) is a Japanese guitarist who has performed with Japanese rock bands such as The Blue Hearts, The High-Lows and The Cro-Magnons. He was born in Hino and raised in Kodaira in Tokyo, Japan. His nickname while playing was "Mashi."
Source: “Masatoshi Mashima”, English Wikipedia (CC BY-SA 4.0), excerpt