Nagisa first appears working in the Marine House seafood restaurant as a waitress, catching Ryuji's attention with her t-back bikini. However, although she seems sweet and innocent, she actually suffers from Dissociative Identity Disorder, and has an evil side who calls herself Yasha.  She is a member of the Midnight Angels gang under Junya Akutsu, and is his girlfriend. Her mental disorder arose after he raped her in the past. Ryuji saves her life, and she eventually overcomes her problems and becomes his girlfriend. They are still together in GTO.    Briefly seen in the manga, Nagisa Nagase is Ryuji Danma's attractive, grad-school girlfriend, where they first met in the GTO prequel, Shonan Junai Gumi. In the manga, when Eikichi Onizuka is exceptionally angry, and does not wish to teach the class, he is shown sitting behind his desk contemplating, while the students watch a lesson given by Nagisa through a videotape, albeit reluctantly, through its footage.  In the anime she first appears when Onizuka and Danma are having a conversation in a bar after Onizuka's interview. Onizuka tries to dive right into her bosom when Danma grabs him right by the collar and shortly starts throwing punches at Onizuka for being a bit of a lech towards Nagisa. She does not appear in the live-action.   (Source: Wikipedia)  In the Shonan Junai Gumi OVA (episode 4), Nagisa is seen with long, straight dark hair and goes to the prestigious Fujisawa Girls School. A hanya tattoo appears on Nagisa's back, near her left shoulder, whenever her alternate personality Yasha surfaces and she rides a black Kawazaki Eliminator motorcycle.

Onizuka is a reformed biker gang leader who has his sights set on an honorable new ambition: to become the world's greatest teacher... for the purpose of meeting sexy high school girls. Okay, so he's mostly reformed. 
However, strict administrators and a class of ruthless delinquents stand between Onizuka and his goal and they will use any means, however illegal or low, to drive the new teacher away. Perfect, because Onizuka's methods won't be found in any teaching manual; he cares about the difference between legal and illegal activities about as much as he cares for the age difference between himself and a high school girl. 
So get ready for math that doesn't add up, language you'd be slapped for using, and biology that would make a grown man blush... unless of course, you're the Great Teacher Onizuka. 

 Note: Episode 1 has an airtime of 48 minutes.

[Website](http://www.redheadsaid.com/)

Cindy Robinson is an American voice actress who voices in animations and video games. Some of her major roles are Makoto Nanaya and Gii from the Blazblue series, Betty Boop in commercials, Queen Beryl in Sailor Moon, Chitose Nanbu in Ah My Buddha, Kukaku Shiba, Miyako Shiba, Jinta Hanakari (kid) and Kiyone Kotetsu in Bleach, Zola in the Blue Dragon series, Minerva and Hinoka in Fire Emblem, and Megan Lewis, the actress who voiced the Purge Emergency Broadcast System in The Purge series.

Robinson is best known for her role as Amy Rose in the Sonic the Hedgehog franchise from 2010 to 2020.

(Source: Wikipedia)

Her sister, [Barbara de Bortoli](https://anilist.co/staff/95763/), is a popular Italian voice actress too. She dubbed [Kagome Higurashi](https://anilist.co/character/1354/Kagome-Higurashi) (from "Inuyasha") for the first 26 episodes, then contractual questions forced dubbing staff of Dynamic Italia to change casting roles and give her one to [Maria Letizia Scifoni](https://anilist.co/staff/96676/).

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.

Before Eikichi Onizuka would become the "greatest teacher in the world," he and Ryuji Danma were members of the infamous biker gang, Oni Baku. When they weren't out riding around and getting into trouble, this duo could be found in school. Doing what you ask? Picking up young women of course! 
(Source: Tokyopop)

Eikichi Onizuka and Ryuji Danma are members of infamous biker duo, the Oni Baku. When not out riding around, they can be found in school, trying to pick up young women. This is the story of the young Onizuka, who would later become the greatest teacher in Japan, and his partner Ryuji in their quest to lose their virginity and reach maturity. 
They are widely feared bosozoku, and are known for their tenacity and viciousness in a fight. However, this lifestyle does not exactly endear them to the opposite gender, so they decide to change their ways. However, this is easier said than done. 
(Source: Anime News Network)

[Website (King Records)](http://king-cr.jp/artist/hayashi/) | [Blog](https://lineblog.me/megumi_hayashibara) | [Old Blog](https://ameblo.jp/megumi-hayashibara-hs/) | [Twitter (PR)](https://x.com/MHayashibara_PR) | [Wiki (jp)](https://ja.wikipedia.org/wiki/林原めぐみ)

Great Teacher Onizuka is back, and the next stage for his legend is … prison?! The trouble magnet of a teacher reveals that this stint behind bars is thanks to a certain incident with the class he became assistant homeroom teacher of half a year earlier: Kissho Academy’s new class for high school-aged celebrities! Does he regret the exploits that landed him in the slammer? Heck, no. In fact, he’s all too happy to calmly tell his fellow prisoners how the whole thing went down—if they’re willing to listen to his story from the very beginning…
 
(Source: Kodansha USA)
 
Includes a one-shot and two extra chapters

Being one of the few longtime friends with Onizuka (GTO), Danma Ryuji has seen all the fiascoes he has gotten into. But the motorcycle shop owner and self proclaimed fastest driver in the city is about to get into a world of trouble. A hot teenager named Ishikawa Mimon starts taking interest in Ryuji, but contrary to her appearance, she's a dangerous person that will put Ryuji into life threatening situations. Even though he has a beautiful girlfriend named Nagisa, Mimon is about to wreak havoc in Ryuji&rsquo;s peaceful life. 
(Source: MangaHelpers)