After being a member of Rumble in 1976, Fromage in 1976, Scheherazade from 1976, which became Novela in 1979 after a line-up change, he founded Gerard in 1983 with Yukihiro Fujimura (vocals and guitar), Masaki Tanimoto (drums), and Yasumasa Uotani (bass).
In 1990, Toshio Egawa reformed Gerard with Yukihiro Fujimura, Toshimi Nagai (bass) and Kota Igarashi (drums) for the album Irony of Fate.
He recruited Masuhiro Goto (drums) from Ningen Isu, Atsushi Hasegawa (bass), both musicians from the metal scene, and Robin Suchy (vocal).
In 2003 and 2004, Atsushi Hasegawa joined progressive keyboardist and video game composer Motoi Sakuraba for two concerts, as well as performing on music for the Director's Cut of Star Ocean: Till the End of Time.
In 2004, after the release of Power of Infinity, Masuhiro Goto left the band to join Ars Nova; he was replaced by Kenichi Fujimoto.