Togainu no Chi. Blood of the Guilty Dog. Volume 10

After the Third World War, known as the Third Division, Japan was split into two parts. A few years after the end of the war, an organization called Viskyo took control of the city of Toshima (formerly Tokyo), which became a staging ground for the so-called "Game". The main character - Akira - found himself in prison on false charges. After his arrest, a mysterious woman came to him and offered a deal: freedom in exchange for participation in the "Game" and victory over the strongest participant - Il Re.