GTO: The Early Years - Shonan Junai Gumi

Shonan Junai Gumi!
湘南純愛組!
¡La Pandilla del Amor Puro de Shonan!
GTO: The Early Years
Pure Love Gang of Shonan
Shonan Jun'ai Gumi
Shonan Junai Gumi
Shonan Junai Gumi: GTO The Early Years
Shonan Junaigumi!
Shounan Junaigumi!
Young GTO
คู่คนลุยเลอะ!
湘南純愛組!
湘南纯爱组!

Prequel

manga
1997
Publishers:
Before Eikichi Onizuka became a legend, before Onibaku, before he became GTO, he was just a normal junior high school delinquent. Getting into fights with his seniors, trying to pick up girls and just hanging out with his friends. Bad Company is a compilation of many short stories, linked together with the characters of Eikichi, Ryuji and their school buds. Such stories involve the origins of Eikichi`s bike, which we see frequently in GTO, the first meeting with the Midnight Angel and many other.

Sequel

manga
1997
Publishers:
and 1 more
Former juvenile delinquent Onizuka finds himself thrust into to role of high school teacher, facing students who behave just as he used to and an administration that doesn't trust him. Using the brash an unorthodox methods he picked up in his youth, Onizuka manages to reach through to his kids and help them with their problems.(Source: Tokyopop) Notes: - Won the 22nd Kodansha Manga Award for Best Shounen Manga. - The chapter count includes the 7 chapters extra GTO: Great Toroko Oppai♡ (Tomoko's Big Adventures) published in volumes 11 and 12, and one extra published in volume 25.

Spin-off

manga
2014
Publishers:
Determined to proclaim the title of "Shonan's strongest", Ikki Kurokami enrols at the reputable Tsujido High School (where the legendary Oni-baku duo, Eikichi Onizuka and Ryuji Danma previously attended) and yearns to become part of the Shonan Seven, a group of members selected to represent their school to fight in a tournament to determine the strongest school in Shonan. However, in order to earn a place as one of the "selected members", he must first battle his way to the top. It seems that this year, there are many powerful entrants who also want to compete for a spot.