Great Teacher Onizuka

GTO: Great Teacher Onizuka (グレート・ティーチャー・オニヅカ Gurēto Tīchā Onizuka), officially abbreviated as GTO, is a Japanese anime based on the manga written and illustrated by Tohru Fujisawa. The anime ran with a total of 43 episodes and aired in Japan by Fuji Television and Animax from June 1999 to September 2000. Both the anime and manga have been licensed in North America by Tokyopop.