 The story switches again to Mamoru Takamura . His story is the most similar to the manga in that he is the only character in the series to have never lost a fight . It begins with Takamura as the Japanese Middleweight Champion , defending his title against the Class A Tournament winner . After winning , Takamura and the others go to a lodge in the mountains to train . While there he encounters a mountain bear that he knocks out . After having a successful boxing career in Japan , Takamura aims for a world title and receives a challenge from the World Junior Middleweight Champion , Brian Hawk . Takamura begins a strict weight management program to drop to Hawk 's weight class . When they eventually fight , Takamura is victorious and becomes the new Junior Middleweight Champion of the world . 
