Great Teacher Onizuka (GTO) Wiki
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Great Teacher Onizuka (GTO) Wiki

A timeline of major things that happened in the series, by year, month and day. This includes character births. Question marks (?) are included when the date is uncertain or only calculated based on clues. Some birth dates may be inconsistent with others.

Date Event Citation
1946 Hiroshi Uchiyamada is born.
July 27, 1966 Mariko Izumo is born. SJG Chapter 6
September 11, 1966 Ayumi Murakoshi is born. SJG Chapter 7
1969 Hiroshi Uchiyamada starts working as a teacher. GTO Chapter 86; Uchiyamada mentions he's been teaching for 29 years.
1970 (?) Julia Murai is born.
June 8, 1974 Nao Kadena is born. This is probably only accurate for the anime, since in the manga she is around the same age as Mariko.
August 3, 1975 Eikichi Onizuka is born. SJG Chapter 1
February 18, 1976 Suguru Teshigawara is born.
March 30, 1976 Ryuji Danma is born. SJG Chapter 1
April 2, 1977 Toshiyuki Saejima is born.
March 19, 1978 Azusa Fuyutsuki is born.
1983-84 (?) Kunio Murai is born.
November 9, 1984 Urumi Kanzaki is born.
June 12, 1985 Kouji Fujiyoshi is born.
September 25, 1985 Tomoko Nomura is born.
September 28, 1984 Mayu Wakui is born.
October 24, 1985 Tadaaki Kusano is born.
November 1, 1985 Miyabi Aizawa is born.
Ayumi's boyfriend dies in a motorcycle accident.
late 1989-early 1990 (?) Events of Bad Company -- Eikichi and Ryuji meet and get their motorcycles.
First Shonan War involving the Midnight Angels.
Kyosuke Masaki dies in a motorcycle accident.
August-September 1991 Eikichi Onizuka and Ryuji Danma transfer to Tsujido High School.
The Oni-Baku fight the Kamakura Wild Dogs (Saejima and Kamata), and afterwards become friends.
Fumiya Shindoji declares war on the Oni-Baku.
Ryuji and Ayumi get engaged, but she leaves him.
April 7, 1992 The Oni-Baku duo and several of their friends are held back a year in high school, with Yoko Minamino as their new teacher. SJG Chapter 75
Ryuji meets Nagisa Nagase.
Junya Akutsu is released from juvenile detention and reforms the Midnight Angels, starting the Second Shonan War.
Natsuki Smith-Mizuki, thought to be dead, returns to Kanagawa and fights the Yokohama Cavalry. In the aftermath, Jun Kamata leaves for the USA.
Spring 1993 Nao Kadena begins working as a teacher at Tsujido
April 1993 Eikichi and Ryuji fake their deaths and move to Tokyo. SJG Chapter 267
1995 (?) Urumi and Ms. Fujimori have a falling-out.
Onizuka gets a teaching degree.
April 23, 1997 Onizuka starts working as a teacher at Holy Forest Academy. GTO Chapter 15; this may be a mistranslation
1998-1999 (?) Based on the ages of the students and their birthdates, 1999 is the most likely date. However, Onizuka would be 23, not 22.
Onizuka enters Tomoko Nomura in a beauty contest.
May 1998 Urumi Kanzaki starts coming back to school, joining class 3-4. In GTO Chapter 64, Urumi mentions she has "10 more months until school ends". Japanese school years end in March.
June-July 1998 Class 3-4 takes a trip to Okinawa. In GTO Chapter 92, before they go on the trip, Onizuka says he's been teaching for three months, so that would be around late June-early July.
Summer 1998 Events of GTO: Shonan 14 Days -- Onizuka flees to his hometown of Shonan for two weeks.
late 1999-early 2000 Onizuka goes to prison.
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