Akihiko Hanamatsuri is Kyoichi Sasuga's primary rival in a local golf tournament, serving as his most significant competitive challenge. A skilled golfer, Akihiko employs psychological tactics beyond pure athletic ability to gain an advantage. His strategy specifically targets Kyoichi's known susceptibility to distraction by women; he instructs his companion, Misako, to behave in sexually suggestive ways during critical moments of their match, deliberately disrupting Kyoichi's focus. This direct rivalry forms the central conflict of the narrative within the 1989 OVA, positioning Akihiko as the primary obstacle Kyoichi faces during the tournament.