Kōta Shimura, also known as Ho-Bin Yoo, is a second-year high school student with a small build and shaggy dark brown hair styled into a bowl cut. He has mono-lid shaped brown eyes and is frequently seen wearing his school uniform, which consists of a dark blue sleeveless jumper, a white button-up shirt, a blue tie, and gray trousers. His life is marked by hardship; he endures severe bullying from his schoolmates and struggles to make ends meet while working multiple part-time jobs. His mother is hospitalized with a serious illness, and the mounting medical bills place immense financial pressure on him. Kotas driving motivation is his desire to earn enough money to cover his mothers medical expenses and support his family. He initially dreams of finding success through a NewTube channel to generate the necessary income. His life changes dramatically when a fight with a school bully is inadvertently livestreamed, and he unexpectedly gains a large number of followers. This incident launches his channel, which grows quickly as it features confrontations with abusive men. Realizing he lacks fighting skill, Kota begins training by watching and following the advice of a mysterious NewTube channel operated by a man wearing a rooster mask, a channel that previously had zero followers. Through this training, he develops the ability to take on opponents much stronger than himself, relying on determination and a refusal to back down no matter how many punches he endures. Kotas role in the story is that of the protagonist who rises from rock bottom by turning street fighting into an online spectacle. He navigates the brutal realities of internet culture while confronting powerful adversaries. Key relationships include his partnership with Kanegon and Aki Yashio, who assist him in producing and broadcasting the fights. The enigmatic figure behind the rooster mask serves as an unseen mentor whose instructional content shapes Kotas growth as a fighter. Throughout the series, Kota develops from a timid, bullied student into a more confident and resourceful individual, learning hard lessons about the fleeting nature of internet fame and the importance of resilience. His notable abilities include his rapidly improving combat skills gained from the mystery channels training methods, his growing resourcefulness in using livestreaming technology to his advantage, and his exceptional endurance and will to keep fighting even in hopeless situations.