Captain of the boxing team in the high school Eiji attends. He often clashes with Eiji's delinquent-like ways, but really just wishes to teach him a lesson.

Legendary boxer Keijiro Akagi's second son, Eiji, is a high school dropout and the world's worst rock guitarist. Though his father and elder brother are both boxers, he hates the sport but suddenly takes an interest in it when he meets the local champion's little sister. <br><br>
(Source: Anime News Network) 

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Naoya Kusanagi