Live action TV
Description
Eikichi Onizuka is the central protagonist of the anime Shonan Junai Gumi!, serving as one half of the legendary Onibaku duo alongside his best friend, Ryuji Danma. At sixteen years old, Onizuka is a high school delinquent with a bleached-blond hairstyle, pierced ears, and a lean but exceptionally athletic build standing at 175 centimeters tall. He is almost perpetually seen with a cigarette in his mouth and favors loose, casual clothing that reflects his rebellious nature. Before the events of this series, Onizuka met Ryuji during their middle school years, and the two quickly formed an unbreakable bond after a violent beginning to their friendship. Together, they earned the nickname Onibaku, which translates roughly to Demon Explosion, a title that reflects their fearsome reputation as the most dangerous fighters in the Shonan region.

The driving force behind Onizuka's actions in Shonan Junai Gumi! is deceptively simple and humorous: he and Ryuji are desperate to lose their virginity and finally get girlfriends. Believing that their current reputations as street brawlers hinder their chances with girls, they decide to transfer to a new high school in an attempt to change their images and start fresh. However, this goal is constantly undermined by their own hot-headed natures and the lingering fame that precedes them. Onizuka's personality at this stage is a raw, unpolished version of the character he would later become. He is vulgar, perverted, and prone to wild schemes, with a deep enthusiasm for pornography, cosplay, and video games. He is quick to resort to violence when provoked or when he sees an injustice, yet beneath this rough exterior lies a surprisingly strong, if unrefined, sense of loyalty and honor. Despite being a feared delinquent, Onizuka possesses a strange charisma that draws others to him, and he is incapable of standing by while someone else is being bullied or mistreated, a trait that often pulls him and Ryuji into conflicts far beyond their initial goal of finding romance.

In the story of Shonan Junai Gumi!, Onizuka and Ryuji act as the undisputed kings of their school and neighborhood, though they are often reluctant to embrace this role as they try to reform their images. Their role is primarily to be the chaotic force that disrupts the established order of other gangs and street thugs. The narrative follows them as they encounter various rival delinquents, biker gangs, and personal challenges, all while navigating the daily life of high school. The duo's legendary status was solidified when they defeated a powerful motorcycle gang known as the Angels, and they later gained the respect and friendship of the most powerful biker gang in the city, the Wild Angels. Rather than being students focused on academics, Onizuka and Ryuji serve as protectors of their territory and arbiters of a street-level justice, solving problems not through diplomacy but through their overwhelming physical prowess and determination.

The most significant relationship in Onizuka's life is with his partner, Ryuji Danma. They are an inseparable pair, perfectly complementing each other as they navigate the violent and comedic landscape of their youth. While Onizuka is often the more impulsive and hot-blooded of the two, Ryuji is slightly more level-headed, though he shares Onizuka's primary obsession with losing his virginity. Their friendship is the emotional core of the series, built on mutual trust and a shared history of countless brawls and escapades. This period in Shonan is depicted as the happiest and most formative time in Onizuka's life, a time when he truly felt he belonged and had a purpose, marking the beginning of a legend that would follow him for years to come.

Over the course of Shonan Junai Gumi!, Onizuka shows the beginnings of character development that would define his later life. While he starts as a simple brawler obsessed with sex, the challenges he faces and the people he protects begin to shape his worldview. He learns that his strength can be used for more than just fighting; it can be a tool to help others and to command respect. This period is crucial for setting the foundation of the man who would later become a teacher. The experiences of loyalty, betrayal, and responsibility he gains as a teenager directly influence his decision as an adult to enter the teaching profession, believing that he can connect with troubled youth in a way that other adults cannot. The series portrays his journey from a simple thug to a legendary figure who, despite his flaws, has a code of ethics and a desire to be more than just a delinquent.

Onizuka's notable abilities in Shonan Junai Gumi! are almost entirely physical, as his academic skills are virtually nonexistent. His primary asset is his phenomenal strength and endurance, which are portrayed as near-superhuman. He is a master of street fighting, capable of taking on entire gangs single-handedly and withstanding brutal punishment from weapons like metal pipes, and even surviving gunshot wounds long enough to continue fighting. He also possesses a second-dan black belt in karate and was a champion in his college karate club, skills he uses effectively in combat. Beyond hand-to-hand fighting, Onizuka is an expert motorcyclist, having restored and ridden bikes since he was fourteen years old, often using his powerful Kawasaki motorcycle as both a mode of transport and a tool in his confrontations. Contrary to his self-depiction as an idiot, he has demonstrated a remarkable capacity for planning and strategy in a fight, as well as a deep, almost encyclopedic knowledge of niche subjects like traditional Japanese cuisine, though his formal education remains abysmal. His physical training routine is also exceptionally rigorous, reportedly including hundreds of push-ups, pull-ups, and squats daily, which accounts for his incredible physique.