, officially abbreviated as GTO, is a Japanese shonen manga written and illustrated by Tooru Fujisawa. It was originally serialized in Weekly Shonen Magazine from May 1997 to April 2002. The story focuses on 22-year-old ex-bosozoku member Eikichi Onizuka, who becomes a teacher at a private middle school, Holy Forest Academy, in Tokyo, Japan. It won the 1998 Kodansha Manga Award for shonen and is a continuation of Tohru Fujisawa's other manga series Shonan Junai Gumi (lit. "Shonan True Love Group") and Bad Company, both of which focus on the life of Onizuka before he becomes a teacher in Great Teacher Onizuka.