 The story then shifts to one of Ippo 's <unk> , Masaru Aoki , who has been boxing for a number of years before Ippo . He enters the Class A Tournament , but loses . Afterward , he begins his comeback and rises through the Lightweight division to win the Lightweight Championship against <unk> <unk> . Aoki 's story differs from the manga in that Aoki lost several of the fights , and achieved a draw in the Title bout . After Aoki 's story arc , the game shifts again to another of Ippo 's <unk> , Tatsuya Kimura , who began boxing with Aoki . His story is very similar to Aoki 's in that he also enters the Class A Tournament and loses . Afterward , he begins his comeback that eventually leads to winning the Junior Lightweight Championship fight against Ryo Mashiba . Kimura 's story is also different than the manga in that he lost several of the fights and did not become the Junior Lightweight Champion . 
