Takakura is his daughter. Mr. Matsuda Owner of Matsuda Gym and also the trainer of Joe Yuuki. He passionately disagrees with George Takizawa's style of boxing. Setsuko Mother of Yu, daughter of Koshu (Grampa) and Ryuichi's love interest. She likes Ryuichi as well, but is afraid to express her feelings to him because she is afraid that it might jeopardize his boxing career. Yu Setsuko's son and Koshu's (Grampa) grandson. Koshu Setsuko's father, grandfather of Yu, and the owner of the restaurant that Joe Akamine, Ryuichi, and George Takizawa often visit. He is called "Grampa" by his close friends and family. Iwamoto The current champion of Japan for his class. He is also the number one boxer at Matsuda Boxing Gym and Ryuichi's upcoming opponent. Episodes Two Joes from different economic backgrounds, one came from a wealthy family and the other, from a poverty-stricken one: One is Shibuya's city's top DJ, and the other is a parcel delivery man. Two different Joes living an opposite life, both walk on different paths until one day their roads are merged by faith in the boxing ring. Fateful encounter After his DJ gig at a nightclub, Joe Yuuki encountered a drunk girl named Maki Takakura. At first, he ignored her, because he thought Maki was just another prowling drunk in the street. But as Joe Yuuki walked away, he noticed she was being attacked by a group of Yakuza. He rescued her; this was the first time he met his future girlfriend. Meanwhile, Joe Akamine is a truck driver and package delivery person. He went to a boxing gym to keep himself fit. He was not taking boxing seriously, although deep down he loves it. Joe Akamine had his own reason for not being serious. Once a week, Joe Akamine goes down to the city streets to put up a street show as a human punching bag. He will let people hit him, and he will not throw punches back. But in return, he will try to dodge all the attacks. As he was "performing", Joe Yuuki noticed him. As curiosity got Joe Yuuki's attention, it made him remember about his dark past. He soon became annoyed, and he decided to participate. He was knocked out by Joe Akamine. Seal the Nightmare After the incident with Joe Yuuki, Joe Akamine started to think about Yuuki's remarks, and those words motivated him to continue