The most cruel of the 4 "Heavenly Kings", Onizuka come from the Shibuya district of Tokyo. He controls the school he attends with an iron fist, forcing his classmates to pay protection fees for their safety. When Maeda and his friends protect one of Onizuka's classmates from him, a bloody war ensues between the two of them, with Onizuka shoving Sakamura out of a second floor window, breaking Mutoh's ribs and capturing the rest of Maeda's friends. In their final confrontation Onizuka injures both of Maeda's hands and stabs a screwdriver through his leg. In the end however, Maeda uses the trademark karate kick he learned from his father to knock Onizuka out. During middle school, him and Akagi were classmates until Onizuka broke most of his teeth with a chair during a fight and Akagi transferred schools. After his defeat at Maeda's hands, Onizuka changes dramatically, respecting his friends and losing his cruelty.