He served as art director on Final Fantasy XII, Final Fantasy XIII, and Final Fantasy XV, among other games.
At Square Enix, Yamagishi served as producer for Star Ocean and Valkyrie Profile games.
Art director Isamu Kamikokuryo and producer Yoshinori Yamagishi separately announced on Twitter on Saturday that they have left Square Enix as of March 31.
Kamikokuryo began working as a concept artist for Final Fantasy X in 1999.