Great Teacher Onizuka

Great Teacher Onizuka (GTO) is a manga series of 25 volumes, written and drawn by Tohru Fujisawa since May 1997 until its abrupt end in April 2002. It is aimed at adults and teenagers.

Plot
GTO story is based on an eccentric yet mischievous teacher who is not afraid of openly admitting he is a pervert, and one of the most dangerous ones as well. 22 years old, Eikichi Onizuka represents all what contradicts and challenges the ordinary rules and laws to which every respectable school abides. However even though he might use unconventional methods, his message always goes across.